Sony BVH-2000 Operation And Maintenance Manual Download Page 277

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5-3-4.

Board

Outline

This

board

is configured

with

the AUDIO-I/2

channel

recording amplifier, playback amplifier, monitor amplifier and
meter driver. Both the recording

and playback amplifiers

are

provided with a crosstalk

canceller.

The circuit

for the AUDIO-I and -2 channels

the same and so the description

below concerns

mainly the

AUDIO-I circuitry.

Refer to AUDIO-I

2 SIGNAL SYSTEM in section A for a

block diagram of the AU-27 board.

I-

0..

I-

The signal

to the AUDIO-I

LINE IN connector

impedance-matched

on the LA board, its recording

level is

adjusted by the VR board and it is supplied to the recording

bias

is added by the

board to the

signal,

which

has

now been

amplified

by the recording

amplifier, and the signal is recorded onto the tape through the

RIP

head. In order to cancel out the crosstalk from the AUDIO-

I to the AUDIO-2 channel, part of the signal amplified by the

to the AUDIO-2

amplifier and playback amplifier. When the VTR is placed in

the recording mode, part of the recording signal is amplified by
ICI09 and

to the AUDIO-2 recording amplifier. This

process serves to cancel out the crosstalk components

generated

between the heads

When

is set to

the insert mode, the Al CANCEL signal from the BE-03 board
is set high and the muting circuit ICIII

goes off. When IClll

goes off, part of the

which has been am

ouneo

by ICl09 and whose frequency response has been compensated

for, is supplied to the AUDIO-2

playback

and the

AUDIO-l

components

leaking into the AUDIO-2 channel are

cancelled out.

3. Playback Amplifier

The playback amplifier is composed of the flat amplifier IClOl
with

29 dB and

the

bandpass

filter ICl02 which is based on an active filter. The

attenuation

of the bandpass

filter is -12 dB/OCT

and its

VUJL.l'-&'IJU,~1J

response referenced to 1 kHz is - 3 dB at 30 Hz and

-3 dB at 27 kHz.
The level of the

output from the

adjusted by the VR board, and the signal itself is returned to the

AU board. The playback signal returned from the VR board is

output from the AUDIO

LINE OUT connector

the

switcher IC 111 and LA board. Furthermore,

part of the signal

returned from the VR board is full-wave-rectified

by the meter

AUDIO SIGNAL SYSTEM

drive circuit, and it is supplied to the audio meter through the
LA board

and VR board. The signal returned

from the VR

board passes through the buffer amplifier and then through the

LA board and VR board, and it is output from the MONITOR

connector

and

Part of the AUDIO-2 channel playback signal is supplied to the
AUDIO-l

flat amplifier

and crosstalk

from the

AUDIO-2 channel to the AUDIO-I channel during playback is

cancelled out. The signal output from the AUDIO-2 crosstalk
canceller IC209 is

6 of the flat

IClOl,

and crosstalk

from the AUDIO-2

channel

to the AUDIO-l

channel, when the AUDIO-2 channel is set to the insert mode, is
cancelled

out.

When the VTR is placed in the SEARCH mode at the 5x speed

or above, the ATT

from the

board is set low and the

playback

output is attenuated

by approximately

20 dB.

For about 5 seconds after the power has been switched on,

order to prevent

noise from

generated.

GAIN

OdS

---7-----------------~

"""'--.........1..-------------....-..,

.....

FREQUENCY

27KHz

30Hz

Monitor

Amplifier

As with the playback amplifier, the monitor amplifier ICl04 is

an active filter type of bandpass filter and its bandpass

response

is the same.

When the front panel TAPE/EE

selector is set to the TAPE

1J'-J',J.lI.J.'U.lJ.,

the VTR enters the simultaneous

recordinz/nlavback

(CONFIDENCE)

mode, the signals recorded by the

RIP

head

are played back instantly by the monitor head, and the signal

recorded

can be monitored

at the

OUT

connector

on the connector

panel or at the HEADPHONES

jack.

The AUDIO

LINE IN connector

input signal, the playback

from the

RIP

head or the

from the

monitor head is supplied to the meter amplifier. The supplied

is full-wave-rectified

and the audio meter is driven.

BVH-2000(U/C)/PS/PM
BVH-2180(U/C)/PS/PM

Summary of Contents for BVH-2000

Page 1: ...he handles available panels are optional Iy ...

Page 2: ...al Sony Corporation expressly prohibits the duplication of any portion of this manual or the use thereof for any pur pose other than the operation or maintenance of the equipment described in this manual without the express written permission of Sony Corporation Le materiel contenu dans ce manuel consiste en infor mations qui sont la propriete de Sony Corporation et sont destinees exclusivement a ...

Page 3: ... control panel allows the VTR function to be expanded The BVH 2000 VTR is compact enough to use in mobile applications as well as a making a perfect studio console The following three types of the VTR are available The following three function control panels option are Type I The BKH 2011 control panel is in stalled VTR for Record Playback Type n The BKH 2012 control panel is in stalled Standard V...

Page 4: ......

Page 5: ...61 1 62 1 62 1 63 1 64 1 81 1 83 1 84 1 84 1 85 1 86 1 87 1 88 1 89 1 90 1 91 1 91 1 92 1 93 1 94 1 94 1 96 1 97 01 1 102 1 104 1 104 1 105 06 1 107 1 107 INSTALLATION 2 1 Unpacking Repacking 2 1 2 2 Accessories Supplied 2 2 2 3 Connectors Cables 2 3 2 4 2 4 2 S Installation Conditions 2 4 2 6 Installation Space 2 5 2 7 Mounting BKH 2011 2012 2013 Function Control Panel 2 15 2 8 Console 2 15 2 9 R...

Page 6: ...0 Audio CTL Monitor Head 3 68 3 24 11 Audio CTL Erase Head Height Adjustment 3 71 3 24 12 V S Erase Head Height Adjustment 3 72 4 4 1 Principal Components Location 4 1 4 2 Cabinet Removal 4 11 4 3 Notes on Power Unit 4 19 4 3 1 Capacity of AC Power Source 4 19 4 3 2 Voltage Selector Cover 4 19 4 3 3 Ventilation Heat Sink 4 19 4 3 4 Primary Circuit Electric Shock 4 20 4 3 5 Check of AC 39 Board 4 2...

Page 7: ... Control TC Board Interface 5 6 16 5 7 Servo System 5 7 1 5 7 1 Outline of Servo System 5 7 1 5 7 2 Outline of Drum Servo 5 7 3 5 7 3 Outline of Capstan Servo System 5 7 4 Outline of Reel Servo 5 7 5 CD 17 Board 5 7 6 5 7 6 RL 12 Board 5 7 12 5 7 7 SR 15 Board 5 7 16 5 7 8 SV 43 Board 5 7 20 BVH 2000 U C Volume 1 2nd Edition BVH 2180 U C Volume 1 1st Edition 6 II ENT 6 1 Erase Head 6 1 6 2 DME Rep...

Page 8: ...Adjustment Flowchart 10 1 10 2 Tape Path Check Adjustment 10 2 10 3 Tension 10 7 10 3 1 S Side Tape Tension Adjustment 10 7 10 3 2 T Side Tape Tension Adjustment 10 8 10 4 10 9 10 5 Tracking Adjustment 10 10 10 5 1 Tracking Check 10 10 10 5 2 Tracking Adjustment 10 11 10 5 3 RFWaveform Check 10 16 10 6 CTL Head Position Adjustment 10 17 10 7 PG Phase Adjustment 10 18 10 8 Adjustment 10 20 10 9 Aud...

Page 9: ... Adjustment 13 6 13 7 13 8 13 9 JI J UH t V1 Adiustment Video Level Preset Adjustment 13 7 Modulator Burst Timing Adjustment 13 7 Burst Level Phase Adjustment 13 11 FM Deviation Adjustment 13 9 13 12 Modulator Freq Response Adjustment 13 9 13 14 Modulator Free Run Freq Balance Adjustment 13 10 Level Calibration 13 10 13 16 Burst DC Level Adjustment 13 11 13 17 Demod AGC Adjustment 13 11 13 19 Demo...

Page 10: ...op Adjustment 14 5 14 11 Wobbling Level Adjustment 14 5 14 12 Confirmation After Adjustment 14 6 14 12 1 Path Check in Reverse Direction 14 6 14 12 2 Picture Check in Normal 14 6 14 12 3 Head to Tape Contact Check at the Mode Transition 14 6 14 12 4 Reset System Check with Excessive Speeds 14 6 14 12 5 Horizontal Shift Check 14 6 14 12 6 Color Frame Shift Check 14 6 14 12 7 Picture Movement Check ...

Page 11: ......

Page 12: ...d to protect the tape The abnormal tension detector and the movable entrance and exit guides open prior to tape end to give maximum tape protection The BVH 2000 has been designed for the of operation in every aspect can be easily changed ac to individual needs AC 100 120V 10 50 60 550W max 10 90 non condensing 70 kg 155 lbs 570 x 680 x 588 mm x 267 8 inches type C 1 5 Head System head for Video tr...

Page 13: ... 8 ohms unbalanced variable level control Low Frequency Linearity Less than 2 Monitor Out L R CH 8 dBm 600 ohms balanced variable level control Audio Monitor Select CH 1 CH 2 CH 1 CH 2 CH 3 selectable Out Sony for Dynamic Tracking SIN Ratio CH 1 CH 2 Remote Out l For CCl Converter Better than 56 dB from 3 distortion level Remote Out 2 For 9 pin Interface CH 3 Better than 50 dB Remote Out 3 For Par...

Page 14: ...Dimensions Unit mm f 358 I I I 423 ______ z o I a w o o Main unit 605 I Function control panel option 1 4 680 Side panel and handle option ...

Page 15: ...to for details 1 5 8KH 20 2 control pane TVpe II This panel is provided to perform editing functions in addition to the type 1 panel With this the BVH 20 00 is a standard editing VTR Refer to for details 8KH 2 0 3 control panel Tvpe ill This is provided with excell en t editing functions such as AUDIO SPLiT EDIT SPOT ERASE VAR MEMORY etc in addition to the above functions this panel the BVH 20 00 ...

Page 16: ...H 20 15 20 15A is a plug in board with generator and reader for SMPTE time code VITC and user bit as well as a character generator assembled together on one board The position and size of the generated characters on the screen can be adjusted and black and white letters can be reversed If this board is installed in the VTR external time code equipment is not needed 1 6 ...

Page 17: ... go ON AIR without preparing an external TBC or if necessary external can the 10 pin REMOTE connector It is attached to the rear panel of the BVH 2000 for use Machines to be connected Editing control unit VTR BVH IOOO BVH l1 BVH IIOOA BVH 1180 etc Others BVR I000 BVR IIOO DTR l 00 IF IOOO etc the is PU 20 16 power unit optional is necessary This is an interface board for interfacing the BVH 2000 t...

Page 18: ... in this box The can then be controlled box is angled for easy operation and an RS422 serial communi cation circuit and power supply are built in Up to 1000 meters of extension is possible BKH 2018 gp CCJ converter This converter is employed when the B TH 1 0001 1OOOAI 11 DOl 1180 is controlled by the BVH 2000 This is a plug in heterodyne board which enables to see the color picture from VTR witho...

Page 19: ...When the SUA 911 monitor console is not installed attach this panel the monitor console is not installed attach this panel SUA 903 slant base SUA 902 dust cover panel This panel relocate the main controls of BVT 2000 and BKH 2100 digital basecorrectors It can installed on makes it possible remotely control the BVT 2000 or the BKH 2100 salesman details the ontionat 1 9 ...

Page 20: ...FUNCTION OF PARTS z o a w a o Tape transport See 1 7 Level control panel See 1 4 1 Function control panel Type I See 1 4 3 J Type n See 1 4 4 Type nr See 1 4 5 Circuit boards See 1 6 Connector panel rear See 1 4 6 1 10 ...

Page 21: ... AUDIO MONITOR select buttons VIDEO RF meter PICTURE MONITOR select buttons o AUDIO 1 2 3 meters 6 VIDEO level control 7 AUDIO 1 2 3 PB level controls AUDIO 1 2 3 REC level controls 9 AUDIO LINE OUT level control 12 WAVEFORM MONITOR select buttons MON ITOR PHON ES HEADPHONES jack 11 ...

Page 22: ...or currently used Lamp 1 Lights when the connector is being used control via 16 connector is con trol via the Lamp 2 being serial 3 Lights when the connector is being used control via the This indicates the video signal display is selected with the 4 board Position of the switch Meter display In the mode the level of the input video signal V During playback the level of the RF signal from the vide...

Page 23: ... 2 AUDIO 2 PICTURE MONITOR select buttons These are used to select signals fed DEMOD OUT connected to can nectar the the SPARE INPUT signal ting the SI on the VM Ol Refer to 1 4 6 selector is selector is returned to position than INPUT the signal previously selected is output WAVEFORM MONITOR select buttons the connector on the SELECT VIDEO For the output signal selected by the PICTURE MONITOR sel...

Page 24: ...TAPE RUNNING meter REC INHIBIT switch This is used to inhibit the REC and EDIT REC modes ON The VTR will not go into the REC mode even if the REC button EDIT button on the control panel are pressed Even when the VTR is re motely controlled the record command is not accepted OFF The REC EDIT button can be used normally Note In accordance with the setting of the switches on the front panel and LG 02...

Page 25: ... selector DISPLAY HOLD button and lamp SHIFT button ADVANCE button PRESET button RESET button 21 SEARCH indicator 19 SHUTTLE button JOG SERVO alarm lamp SYSTEM alarm lamp ENTRY button button 1 15 PLAY button 12 STANDBY button STOP button REC INHIBIT lamp 14 REC record button ...

Page 26: ...APE RIP TAPE PBTAPE l RIP TAPE EE TAPE R J APE 1 T E PB tAPE j r IPT eE t EE EE 4 RIP TAPE EE RIP TAPE EE RIP T APE E EE EE EE IP TAPE RIP TAPE EE EE EE 4 RIP TAPE EE RIP TAPE EE INPUT 3 INeUT v 0 INPtJJ t NPtJ ff tJSJPUT i PUT ji PB TAPE PB TAPE PBTAPE 1 PB TAPE EE TAPE PB TAPE 1 PB PB TAPE EE EE EE 4 PB TAPE EE PB TAPE EE PLAY TAPE EE J 1 EE J E 4 PB APE 7 J PB t i E1 J T RE EE EE 4 PB TAPE EE P...

Page 27: ...be latched and the E to E signal will be output from the AUDIO OUTPUT and MONITOR OUTPUT connectors even if the TAPE or TAPEjEE position is selected afterwards When the VTR is entered into the the will is be output 6 The E to E signal is output from the BVH 2000 OO SERVO REF reference selector connected the INPUT connector G on the video connector panel composite video signal becomes the reference...

Page 28: ... EE selector CD is set to INPUT it indicates an input from the time code generator TIMER I This is used to indicate the tape run time by counting the CTL signal on the tape It is possible to zero reset at any position on the tape with the RESET button j After reset the new tape run time is indicated from this point TIMER 2 This is used to indicate the tape run time by counting the CTL signal on th...

Page 29: ...r II UJ CL o TENSION swi tch on the board turned OFF so that the tension release mechanism does not operate The macnine goes into the STOP mode automatically after the power is turned on or if the tape is out of the tape sensor STOP lamp being SUIJP1 1ed STOP slack STANDBY button This push on push off button is used to start the drum rotating In normal use after the STANDBY button has been pressed...

Page 30: ...AD switch on the BKH 2015 TC l is set to VITC position and the TIME CODE TIMER selector is set to TIME CODE the preroll func tion does not work dial This dial is used to change the tape run 1 By turning this dial during the JOG SHUTTLE or PROGRAM JOG refer to pages 1 21 and 22 modes refer to 1 9 it is possible to change the direction and speed of the tape run this dial is turned during the PLAY or...

Page 31: ...operation indicate and of SHUTTLE mode x x32 8 I I X 4 X 1 I I X X Mode Reverse direction green JOG mode PROGRAM JOG mode X8 x32 o x X X 1 x4 1 Still red Forward direction green o CD 0 i 1 r l T rl direction direction x 0 X x 2 0 x 1 x 1 2 x x 0 I I I I I I I I X2 x2 l3 0 x o x o x x 0 x Xl x 2 fo X2 X 2 x 3 Mode Reverse direction green 1 Forward direction green Still red z o I 0 ill 0 a ...

Page 32: ...teps 1 time normal 0 1 time normal 3 time normal l 1 1 J v v v 21 steps 21 steps 8 steps PROGRAM PLAY mode VAR button and PLAY button can turn the mode into PROGRAM PLAY if pushed altogether after setting the VAR switch on the SY 79 board to P PLY Then turn the SEARCH dial to the left or right pushing at the same time the VAR button and stop at the position desired and playback is per formed at th...

Page 33: ... TIME CODE TIMER selector z Q a w a o DISPLAY HOLD button and lamp indicator 19 JOG button SYSTEM alarm lamp Buttons for editorial operations are explained later 16 CONTROL P R button 15 REC INHIBIT lamp REC record button 13 PLAY button 12 STANDBY button 11 STOP button 1 23 ...

Page 34: ...E B P EE EE 4 RIP TAPE EE RIP TAPE EE INPUT 3 c rNtPu f 1 S r r ipUT t t N PUT It i fNP DT i rNPtJ t PB TAPE PB TAPE PB TAPE 1 PB TAPE EE TAPE p TAe E r Pr TA PB T APE l r J B T PEJ f c E i TAPE EE EE EE 4 PB TAPE EE PB TAPE EE PLAY s E E 4 TAPE I T PE J I EE EE 4 PB TAPE EE PB TAPE EE INPUT 3 f NPUT rK pu r t NPUT t ZINPtJT l NPU1 I output signal of the VIDEO OUTPUT connectors I output signal of ...

Page 35: ...audio channel 3 will be latched and the MONITOR OUTPUT connectors even if the TAPE or TAPEI EE position is selected afterwards When the VTR is entered into the another mode the latch will be released output 6 The E to E signal is output from the BVH 2000 OO SERVO REF selector Selects the reference signal for servo lock EXT The signal connected to the REF VIDEO panel composite video signal becomes ...

Page 36: ...counting the CTL signal on the tape It is possible to zero reset at any position on the tape with the RESET button j After reset the new tape run time is indicated from this point TIMER 2 This is used to indicate the tape run time by counting the CTL signal on the tape When the tape is threaded zero reset of the TIMER 2 cannot be performed The data of the TIME CODE TIMER lor TIMER 2 selected by th...

Page 37: ... edit is placed before the edit IN point DATA ERR Indicates that an invalid numerical value is set as time data for example 65 35 etc OUT Indicates that the tape not loaded correctly REC TEST Indicates that the REC TEST switch REC is 00 only set to OFF and the BVH 2000 OO is in the STOP or REC TEST mode DISPLAY HOLD button and lamp If this button is pressed at any position the data r1 ln trori on ...

Page 38: ...onizing two BVH series VTRs turn the SEARCH dial clockwise faster or counterclockwise the PLAY button pressed The degree of compensation is determined by the rotation angle and the range is within 15 of the normal speed capstan override the bu tton will return the VTR to the normal speed REC record button When the PLAY button is pressed keeping the REC button pressed both the REC and PLAY lamps li...

Page 39: ...k will at speed 50 the center the picture is still SEARCH dial has clicks at the center and 50 positions For fast winding in the forward direction the is 1I art 11r t Hi automatically end and the unit stops automatically If you wish to wind the tape completely turn the SEARCH dial to the the board OFF For fast winding in the reverse direction rewinding the tape speed is reduced automatically at th...

Page 40: ...de Speed display 0 0 0 0 0 0 0 0 x 2 x x X z Times x X50 X32 x 16 x 8 I I I I X4 X 1 X XX6 ED 0 0 0 0 0 0 0 0 X z x XY2 x 2 0 I I x 8 x 16 x32 x 50 X 6 x x 1 x 4 1 Forward direction green Still red Mode Reverse direction green JOG mode o o i Mode Forward direction green Still red Reverse direction green PROGRAM JOG mode Speed displayO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Times x xzXo xlJ3 o x lJ 0 X o x ...

Page 41: ... 3 time normal 1 time normal PLAY VAR and PLAY button can the mode into PROGRAM PLAY if pushed altogether after setting the VAR switch on the SY 79 board to P PL Y Then turn the SEARCH dial to the left or right pushing at the same time the V AR button and stop at the position desired and playback is per formed the speed corresponding the dial to For the which noiseless in in the PROGRAM JOG mode o...

Page 42: ...o I a w a o 22 ASSEMBLE button INSERT button 24 SPOT ERASE button 25 Channel preset buttons AUDIO 1 AUDIO 2 AUDIO 3 AUDIO 4 SYNC VIDEO 27 PREVIEW REVIEW button 31 TRIM buttons IN OUT 30 ENTRY IN button ENTRY OUT button 1 32 ...

Page 43: ......

Page 44: ... bu tton lam p lights of the and pressing the button allows the to have full rehearsal picture and the audio can be checked for the whole of the edit by the recorder monitor of the Player After pressing the CONTROL button lamp of the operated pressing the bu tton allows only the Player to be of the Recorder After turning the CONTROL go of the button allows buttons operated pressing the recorder to...

Page 45: ......

Page 46: ......

Page 47: ...TIME CODE TIMER selector 8 Display SERVO alarm lamp SYSTEM alarm lamp 4 CF LOCK lamp Buttons for editorial operations are explained later 17 SHUTTLE button JOG z o a w 0 o 20 VAR variable button MEMORY button IBIT 13 REC record button ...

Page 48: ... the IN and OUT points of the recorder in the PREVI EW mode 2 PLAY others STANDBY OFF STANDBY ON REC EDIT REC r I output signal of the VIDEO OUTPUT connectors r output signal of the DEO MON ITOR OUTPUT connectors 1 If the SW9 1 on the SY 80 board is set to ON the E to E signal will be output in the REC or EDIT REC mode even if the TAPE EE selector is set to TAPE 2 If the SW8 5 switch on the SY 80 ...

Page 49: ...annel 3 will be latched and the the MONITOR OUTPUT connectors even if the TAPE or TAPEI EE position is selected afterwards When the VTR is entered 5 If the REC INHIBIT switch is set to ON the TAPE signal will be output SERVO REF reference selector EXT The signal connected to the REF VIDEO INPUT connector on the video connector panel video becomes reference signal In the input video signal becomes ...

Page 50: ...to zero reset at any position on the tape with the RESET button j After reset the new tape run time is indicated from this point TIMER 2 This is used to indicate the tape run time by counting the CTL signal on the tape When the tape is threaded zero reset of the TIMER 2 cannot be performed The data of the TIME CODE TIMER lor TIMER 2 selected by this which is indicated on the display can be entered...

Page 51: ... the BVH 2000 00 REC TEST is displayed when the VTR is in the STOP or REC TEST mode with the REC TEST switch ON and the REC INHI switch OFF Block This block indicates malfunctions with flashing error meaning of the letters as follows SYS ERR Indicates a system error showing that the system control CPU is not operating OVER HEAT Indicates overheating of the power supply system or motor drive amplif...

Page 52: ...When the PLAY button is pressed keeping the button pressed both the REC and lamps light and the machine enters the recording mode To press either the JOG PREROLL button Recording is performed by the head regardless of the position of the HEAD selector 0 To monitor the simultaneous playback picture during recording with the set the selector CD to TAPE When the REC INHIBIT lamp is on the machine ent...

Page 53: ...t or set the EOT STOP switch on the SY 80 to fast the the tape speed is reduced automatically at the tape top and stops automatically near the TIMER 2 If you wish to rewind the tape completely turn the SEARCH dial again to the left or set the EOT STOP SY 80 If mode 3 minutes more the machine enters the STOP mode automatically to prevent damage to the tape you don t want switch S9 6 on the SY 79 bo...

Page 54: ...k SHUTTLE mode display 0 0 0 0 0 0 0 0 X 2 x x x Times x X50 X32 x 16 x 8 I I I I X4 X 1 X X Mode Reverse direction green JOG mode Mode 0 0 0 0 0 0 0 0 x x x x 2 0 I I x 8 x 16 x32 X50 X 6 XX1 x 1 x 4 I Forward direction green still red o o i Forward direction green still red Reverse direction green Speed displayO 0 0 0 0 0 0 0 ED 0 0 0 0 0 0 0 0 x Ko x 1 3 0 x o x x x O x 0 x o x 1 3 0 x Ko x 1 x...

Page 55: ...he normal PLAY speed 20 normal PLAY speed 20 0 1 steps 0 1 steps Tape presetting is possible by turning the SEARCH dial with the VAR button pressed in STOP STANDBY PLAY or REC mode After setting by pushing the PLAY button and VAR button at the same time The set on on display PROGRAM JOG speed is displayed as a fraction or decimal point and PROGRAM PLAY as 1 45 VAR variable MEMORY button The SEARCH...

Page 56: ...on SPOT ERASE button Channel preset buttons AUDIO AUDIO 2 AUDIO 3 AUDIO SYNC VIDEO PREVIEW REVIEW button AUTO MODE button ENTRY IN button ENTRY OUT button AUDIO SPLIT button AUDIO IN button AUDIO OUT button 20 key section EDIT button button ...

Page 57: ...g the channel buttons and pressed the signal on Rotating the takeup reel right side by hand to make the tape run manually to the right and left several times allows that portion be erased another operation button Note Be sure to release the EDIT button during running the tape 2 spot erase and enter the cut in cut out points to be erased with the ENTRY IN OUT buttons Press the SPOT ERASE button and...

Page 58: ...o the IN point and stops there and the E to E picture can be seen for about 2 seconds PREROLL button Ifone or more of the ENTRY AUDIO IN or AUDIO OUT buttons is pressed to enter the editing point the editing point can be prerolled When the PREROLL button is pressed the tape runs and stops at the prerolled point The time can be set from 0 to 15 seconds in units of one second using the P ROL TIME sw...

Page 59: ...ons operate the buttons the OFF returns the to state where the video and audio editing points are entered with the ENTRY IN OUT buttons If the AUDIO IN OUT button is pressed during PLA Y or REC mode the value of the display data subtracted by the reaction time time set from 30 frames using REACT TIME switch on the SY 79 board 20 key section The 20 section consists of keys IN OUT keys AUDIO IN OUT ...

Page 60: ...trim the editing point entry TRIM When the data is displayed in block 4 the data in block 4 is entered as the IN point when the IN key is pressed and as the OUT point when the OUT key is pressed Trim may be in frame units The trimmed result is displayed in block 4 3 To indicate the length of the edit interval DURATION and LAP When the IN and OUT buttons are pressed simulta neously the length of th...

Page 61: ...IME CODE display is Operation 1 TAPEjEE selector CD 2 ill ill ill ill ill ill ill selector Display 1 51 Comment The generated time code of the time code rrt liT It lirO l r r is displayed in block 1 Input the desired data using the numerical keys The data is first all input to If wrong data was en tered delete it by using the correct data to block 1 and set as the generation value start poin t z o...

Page 62: ... 30 00 TMI 00 00 30 00 is the mode Comment geIler ated user bit of the time code genera tor is in block 1 The desired data is entered to block 4 and The desired data is entered to block 1 and is set as the user bit Comment data of in block 1 Input the desired data to block 4 flash es invalid time data has been entered Input the correct data after h the The desired data is entered to block and is s...

Page 63: ...N OUT points can also be en tered in the same way z o f t a ill 0 o Comment The desired IN point data is displayed in block 4 OUT and AUDIO IN points be orsnraven in an example trim by addition The IN point data is shifted to block 3 enters in block 4 the number which wan t to block The result of the addition is displayed in block 4 The desired data is entered OUT and is rll lnl verl in the IN has...

Page 64: ...t to zero it is recommended that the 1st editing event IN point be previously entered in TIMER 2 of the recorder and the actual IN OUT points be entered with TIMER lor TIME CODE After the editing of several events has been performed display the data of the TIMER 2 of the recorder and press the IN and OUT button Doing this makes it possible to know the total edit duration LAP of all the events up t...

Page 65: ...ector panel the breakers z o a UJ 0 o AC power cord Connect this cord to the AC power source having a voltage fluctuation of less than 10 Remote control connector panel Video connector panel Audio connector panel ...

Page 66: ...DEO OUTPUT connector FRAME PULSE OUTPUT connector TIME CODE OUTPUT connector REF VIDEO INPUT connectors 75 2 ON OFF switch TIME CODE INPUT connector CF PULSE INPUT connector TBC MONITOR INPUT connector SPARE MONITOR INPUT connector WFM MONITOR OUTPUT connector VIDEO MONITOR OUTPUT connector TOTBCconnector SPARE OUTPUT connector DO SIG OUTPUT connector 1 56 ...

Page 67: ...he optional BKH 21 00 digital time base corrector or HT 2000 heterodyna plug in board is installed signal from installed is output instead connector by setting the S1 on the VM 01 board VIDEO 1 2 3 connectors 0 VTR demodulator output The following output signals are obtained depending on whether the optional HKH 2100 THC boards or the HT 2000 heterodyne color baord installed or not switch on the o...

Page 68: ...FF TAPE H TTL HIGH IMPEDANCE 6 DO PULSE TTL HIGH IMPEDANCE 7 DO PULSE GND 8 PLAY STATUS H TTL HIGH IMPEDANCE 9 10 FH TTL HIGH IMPEDANCE 11 FH GND 12 CONFI L TTL HIGH IMPEDANCE 13 14 GND TTL HIGH IMPEDANCE n CONNECT 15 DT MODE L TTL HIGH IMPEDANCE 16 FR PULSE L HIGH IMPEDANCE z o I a w 0 o L Low active H High active Switches on the VM 01 board Serial No 10001 10499 S1 S2 S3 0 0 0 o 0 0 0 0 0 0 0 0 ...

Page 69: ... CODE input signal from this by the switch TC the the same board to EXT 2 Refer to 1 6 3 0 AUDIO 1 2 3 LINE OUTPUT connectors Audio channels 1 2 and 3 output connectors The ohms to 37 5 ohms shorting conductive LA 02 board in the VTR Refer to 1 59 Audio channel 3 mic input connector The input signal can be recorded by setting the MIC LINE TC switch on the AE 03 board to MIC Audio channel monitor o...

Page 70: ...TE l connectors are used be sure to set the switch on the SY 79 board to one of REMOTE l 000 be connected to connector using board instead of sub 37 pin input connector for remote control monitor switching is possible to connect the signal to this connector by which output to the WFM MONITOR and AUDIO 80 Remote control unit l ll r motion controller 100 Interface box 000 sub 9 pin remote Used for c...

Page 71: ...Black burst or color bar VIDEO input VIDEO IN VIDEO BB CS H l lnlTlnn machines I I I REMOTE connectors L r J I I I I I VIDEO OUT External TBC BVT 2000 COMP VIDEO VIDEO OUT To later stages send i I t r VTRlediting machines with CCJ type REMOTE connectors L oJ To audio monitor equipment ...

Page 72: ... current can be adjusted to suit the characteristics of the tape used 1 Pull and remove the head cover z o I a w 0 o 2 Input a standard level audio signal and set the VTR to the REC mode Adjust the 2 3 BIAS LEVEL adjusters using an insulated screwdriver 1 62 ...

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Page 74: ...nder the front surface to release the control panel 2 Lift up the function control panel so that the panel is almost horizontal The panel locks in this position 1 Hold the panel so that it does not drop suddenly 2 the white button to release the lock Close the panel RELEASE 64 ...

Page 75: ...rd Board Board Board Board Board Board Board Board Board Board Board Board Board Board Board w z 0 0 a w W I 0 CJ a Z z a 0 J Q a w a 0 0 I a 0 0 a a N W LL W Z N a W I J W J W a J Z CJ 0 J 0 0 0 0 0 J Z I W 0 J W W 0 i 2 a OJ l BKH 2100 digital time base corrector option BKH 2015 BKH 2015A time code generator reader option or board board into z a a w a a ...

Page 76: ...to compensate the overall equalizer characteristics when self recording or playing back Used for CH l Adjust with a screwdriver REG LEVEL 4 AUDIO 1 RECLEVELVR Input a standard signal and set the VTR to the E to E mode Set the meter reading to the predetermined level using the REC level control volume on the meter panel Then set the VTR to the REC mode and the TAPE EE selector to TAPE Adjust the ou...

Page 77: ...de generator reader TC 14 When using the time code the TI ME INPUT connector BNC on the connector panel EXT 2 When using the input time code from the AUDIO 3 LINE INPUT connector XLR on the connector panel A 3 SEL MIC LINE AUDIO 3 input selector Switches according to input signal the AUDIO MIC Input from the INPUT connector on connector panel LINE Input from the AUDIO 3 LINE INPUT connector on the...

Page 78: ... back by the R P video head Adjusts the equal izer level of the playback signal of the R P sync head With knob Adjusts the DP characteristic of the video signal played back by the PLAY video head Adjusts the equal izer level of the playback signal of the PLA Y video head With knob the DG characteristic of the video signal played back by the PLAY video head Adj usts the equal izer level of the play...

Page 79: ...DM 25 board DEMODULATOR WHITE REF 25 1 WHITE REFERENC E is level wh ite peak the reference signal level OF F Normal position The white reference signal is not added z o I 0 w 0 o ...

Page 80: ...F meter of the front level control panel RF V Indicates the input video signal level in the E to E mode and the RF signal level from the video head when playing back INPUT Indicates the input video signal level at all times RF S Indicates the input video signal level in the E to E mode and the RF signal level from the sync head when playing back CURRENT SYNC VR Adjusts the recording current level ...

Page 81: ... VR REFERENCE _COLOR REF FRAMING CF VR This indicator lights to indicate optimum of IN to optimum phaseof the off IT tape video signal IN NORM ADJ This lamp is on during adjustment NORMAL ADJUST switch NORM Normal position ADJ Set to this position when adjusting Carry out the adjustment by turning the REF CF knob on the SG 62 board and make the IN LED light Then the CF knob the AD 12 board and mak...

Page 82: ...TR will not go into the record mode even if the R EC button EDIT button on the control panel are pressed When the VTR is remotely controlled the record command is not accepted OFF The REC EDIT button can be used normally Note In accordance with the setti ng of the switches on the front panel and LG 02 board the R EC IN HI B IT switch operates as shown in the table below state ON ON ON ON ON OFF ON...

Page 83: ...ellow Time generator TIME U Ln Yi i Jl n BIT TC UB switch PRSET REGEN switch 1 411 PRSET REGEN switch 4 TIME CODE USERBIT switch TC TC UB UB switch CHAR ON CHAR ON OFF switch CHARACTER ON OFF switch OFF TC indicator green TC 0 TC LED green H SIZE control VITC indicator green VITC O VITC LED green control OF o A SIZE switch DROP LED green ill ill V POSswitch 0 CH MODE switch z o a UJ a o ...

Page 84: ...el are pressed If the buttons on the control panel are pressed both the VTRs work in that mode OFF Normal position Either of the CONTROL P R lamps lights The player or recorder works corresponding to the P or R lamp wh ich Iights Set to th is position when only one VTR is operated VARIABLE switch Switches the VAR button functions on the control panel P JOG Program jog function Variable speed playb...

Page 85: ...vicing push switch autornaticallv stops beginning end OFF EDIT TIMING switch Can set the edit timing of the video F2 IN point is Field 2 OUT point is Field 1 F 1 F2 Any field designated by the ENTRY button is IN and points F 1 point is Field point Display LED For servicemen If the PLAY MODE EOT INHIBIT switch S2 3 on the LG 02 board is set to ON the automatic stop fu nction is not activated in the...

Page 86: ... Normal condition The operation buttons on the control panel all work normally STOP The mechanism drive systems such asthe drum capstan reel etc go into the STOP mode Set to this position when checking the operation of the electronics system LED For servicemen 1 76 ...

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Page 88: ...hines without dynamic tracking OF F When the HT 2000 ill is installed The reference sync signal synchronizes with the playback signal BKH When the BKH 2100 em is installed The drum phase advances 1 5H for the reference sync signal 2F CTL GND switch Determines the capstan servo lock phase for the reference sync signal when playing back 4F Locked to the color frame mode 4 Field 2F Locked by the fram...

Page 89: ...color frame pulse using the above VR FIX Normal position Detects the color frame pulse as an absolute phase EXT The color frame pulse fed from the CF PULSE INPUT connector the connector panel used Be to that 02 DET on the RL 12 board lights SC ADJ MANU FIX 0 EXT OUT REF 2 REF 4 0 PB CF PULSE OUT switch Switches the output signal of the FRAME PULSE OUTPUT the panel 2 Field pulse REF 4 Outputs the 4...

Page 90: ...ection of th e field jog or frame jog mode is remotelly controlled FIE LD Field jog mode FRAME Frame jog mode In the frame jog mode the dynamic tracking playback with keeping the interlace is possible between the still and the x2 normal speed For the dynamic tracking playback with keeping the interlace change the setting of the No 5 and No 6 switches of the 51 This is effective between the still a...

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Page 93: ... VTRs having DT dynamic tracking play back function such as BVH 2000 02 On the BVH 2000 00 playback performed RIP at the position Playback speed can be adjusted from 1 32 to 50 times the normal speed depending on the setting position of the dial A still picture is obtained when the dial is set to the center position The has a click the still 1 and speed IJ J L u mode aU1t0I1t1atIC8tUY goes set on ...

Page 94: ...the playback is ct a r I Yl lrl by the head even at the PLAY position B J 1 l Uh lrll speed can be adjusted from 0 to 3 times the normal speed depending on the dial turning speed When the dial rotation stops a still picture is obtained There are no clicks while the dial is turning When the still mode lasts more than 3 minutes the unit automatically goes into the STOP mode To defeat this set the SW...

Page 95: ...ress the VAR button Playback starts at the reserved speed z o r cr UJ a a Turn the search dial Variable speed Program Jog mode Noiseless playback is possible on the BVH 2000 02 to Press the SHUTTLE button STILL mode Press the PLAY button PLAY mode ...

Page 96: ... button and turn the search dial program is 1 0C101 trori The memorized adjusting value of the tape displayed in from 20 to 20 Hold down the and press the button VII l trh 1 1T starts at the reserved Hold down the VAR button and turn the search dial mode is Press SHUTTLE button STILL mode Press button mode Press the STOP button to return to ...

Page 97: ... the block 5 of the display The tape after moving to the PREROLL point starts running at the initially set speed When the tape passes the IN point a buzzer sounds mernonze a After While the lamp is being memorized The search dial is continuously variable from 1 to 3 times the normal speed and the speed variation curve is memorized VAR LJ L L lamp operation such as SHUTTLE JOG are Set the initial s...

Page 98: ...PREVIEW button according to the memorized will be performed 2 3 PREVIEW REViEW 4 Standby mode for the VAR memory playback When only the PREROLL button is pressed the tape runs to the preroll point and stops there standby mode for the VAR memory nra vna c To start playback at the desired time press the REVIEW button before the start time by the preroll time and the playback at the memorized curve w...

Page 99: ... button No Yes 2 Press the channel preset buttons to turn off the undesired channels AUDIO l 2 3 SYNC VIDEO 7 Press the EDIT button at the desired editing IN point ON editing OUT 8 Press the STOP button at the point ON Tape runs and stops 6 z o r a w a o ...

Page 100: ... the desired editing IN point in the SHUTTLE mode and press the ENTRY IN button 5 Press the PREROLL button ON 7 Press the EDIT button at the desired editing IN point ON Tape runs to the preroll point and VTRis in EDIT REC mode Editing start 6 Press the PLAY button ON 8 Press the EDIT button at the desired editing OUT point OFF 9 Press the STOP button ON CHANNEL PRESET 4 1 92 ...

Page 101: ... 3 The erase operates the button pressed EDIT button ON 3 Continue to press 4 Rotate the take up reel to the right and left MANUAL JOG mode Rotate to the right and left several times 5 L Release the EDIT button with the tape rotated to the right and left 6 Press the STOP button ON 1 SPOT ERASE 2 AUDIO 1 2 3 1 93 z Q a w c a ...

Page 102: ...position the OUT 7 No Preview 8 The tape runs over the OUT and stops au LvJ J J UI J A A J The tape runs over the OUT returns to the OUT point and stops No Review Yes 1 94 9 To modify points Type IT use the TRIM buttons to in 1 4 4 Type ill use the 20 key section to in Press enter button to re ...

Page 103: ...2 ASSEMBLE or INSERT 1 AUTO MODE 6 ENTRY OUT 4 PLAY or SHUTTLE Editing point search 11 REVIEW 1 95 ...

Page 104: ...as those described on the preceding page Same as preceumz page I I Type ill only 6 8 1O Press the are the same as on the nrecedmz operations point modification the same as on the preceuma the 20 key section mctuumg re en ter the editing poin t after After start the SPLIT light when AUDIO press the button to be or goes ...

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Page 107: ... PLAY head CONFI OFF TAPE x EE BVH 2000 02 OFF TAPE RIP head OFF TAPE IN PREVIEW TAPE TAPE EE x RIP head OFF TAPE RIP head OFF TAPE RIP head OFF TAPE TAPE TAPE EE AUDIO monitor LINE OUTPUT connector OUT point EE RIP head OFF TAPE EE RIP head OFF TAPE PLAY PLAY head OFF EE X OFF TAPE TAPE EE IN point OUT point selector r PREVIEW TAPE RIP RIP head OFF EE OFF TAPE EDIT TAPE EE TAPE EE selector IN poi...

Page 108: ... A IN A OUT EDIT Remarks IN OUT REVIEW en 1 AUTO MODE OFF X X X X X X 2 AUTO MODE ON X X X X A 3 AUDIO SPLIT ON X X U When CHANNEL X PRESET is turned 4 T ENTRY IN only 0 X X off When CHANNEL PRESET is turned 0 on 5 ENTRY OUT only 0 X X X X Both ENTRY IN X 6 M 0 and OUT 7 0 PREROLL button 0 ON X X 8 D PREVIEW button 0 ON X PREVIEW mode E 9 EDIT button ON 0 X 0 10 EDIT mode end X X X X X 0 REVIEW mo...

Page 109: ...e is this example reference A IN point is reference point The value is the point I n this example the A OUT point is the reference point TAPE POSTROLL I I TIME I I I I I I I I PREVIEW area in ASSEMBLE mode recorder only EDIT section approx For the model with the serial No 11001 and higher PREROLL TIME I I I I I I I POSTROLL TIME I I I I I PREVI Irol nnrlor only EDIT section in ASSEMBLE appro x 2se...

Page 110: ...back a tape with the speed of a curve memorized in the the picture can be recorded on the recorder mode V1J JL J jL Refer to 1 9 6 for player operation Recorder operation is the same as normal editing V v l J L l U l J The cue points are as follows the initial in the mode is not necessarily one times the normal so the player cue up point will be different from that of the recorder This is because ...

Page 111: ...IME the button described above when both recorder and IN points have been entered and either recorder or player OUT points have been entered makes the recorder and player tape run possible and the OUT point can be monitored as in the figure above If the PREVIEW button is pressed and the STOP button is pressed point after having passed IN point as to IN can stop y POSTROLL TIME The time POSTROLL ti...

Page 112: ... rrrIArl using the 1 1 buttons z o a w a o TRIM IN button TRIM OUT button position Press the IJ rA1 1 11 to buttons ti preroll to point point 1 button Preroll to Press the and When point Press the Press the the AUDIO IN button AUDIO OUT button ...

Page 113: ...are illustrated in the table below REMOTE LOCAL switch REMOTE 0 on Flashing STOP STAND BY SERVO SYSTEM Buzzer operation lamp lamp ALARM ALARM DRUM 111 11 I 0 CONTINUE CAPSTAN UNLOCK 0 CONTINUE Movable guide malfunction 0 SOUND STOP tape guide tape out disengaged I STOP i Tape out disengaged 0 SOUND CONTINUE Tape 0 SOUND STOP l UI IIII I In addition to these various error conditions are display ed ...

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Page 115: ... o 1 1 f en Z STOPPER LEFT SIDE CUSHION Note These can pack VTR to which the Sony Control Panel is mounted Note 1 When packing the VTR to which the Sony Side Panel Kit is mounted I remove the left and right side cushion Note 3 A stopper has been mounted in the card rack at the factory to prevent the pi ug in boards from comming off in transit Usually the stopper is not necessary however it should ...

Page 116: ...3 connector and consists of the following parts Used for connecting a parallel type remote controller to the VTR CD D su b 50 pin Connector CD Plastic G Screw Lock 2 PC Board Indication Label Switches and Controls at the front of each plug in boards are indicated Usually this label is stuck inside the bottom lid When mounting the VTR in a rack or console unit stick it to the appropriate place acco...

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Page 125: ...the brackets Fixing screws PSW3x8 each two right and left are supplied with the BKH CD Connect the two connectors CN701 10 pins and CN702 26 mounted in the VTR to the BKH sure using the BKH connector levers Push the BKH down while depressing the release lever that is inside the left side panel of the VTR j Close the bottom lid 2 8 MOUNTING ON THE CONSOLE UNIT Refer to the installation manual for t...

Page 126: ...12 B4x8 Sony part No 7 682 561 04 Other Screws and Nuts Be sure to use the parts recommended by the slide rail manufacturer Accuride slide rail Model 305 20 and Bracket 5356 can be used also Loosen the screws right and left as shown below and set the body vertically leaving the connector panel and card rack Loosen PSW4xS Don t remove Remove PSW4xS Remove PSW4xS Tighten PSW4xS CARD RACK CONNECTOR P...

Page 127: ...tive Modifica tion Procedure A Replace the SQ 3 board as follows Replace C9 located at address 01 C9 0 01J lF5 50V fIo mylar 0 068J lF 5 50V 1 108 599 00 X Break the fo I IC K3 in 11 component side p v Break the foil IC J3 pin 13 IC K3 pin 8 solder side X Break the foil IC K3 pin 13 solder side Add a jumper IC H2 pin 10 IC J3 pin 12 IC K4 pin 6 PWA No A 6259 069 A A 6259 069 B PWB No 1 600 166 11 ...

Page 128: ...ximately 1 5 times and above or 0 5 times and below the vertical movement of the lines is smoothed and the TBC output picture feels natural When the tape speed is near to 1 times distinct and indistinct pictures may appear alternately in the long period even though the original picture is distinct Y ADD OFF When the tape speed is approximately 1 5 times and above or 0 5 times and below the picture...

Page 129: ...fication Procedure A B or C When using BVT 2000 in combination with BVH 2000 2180 and or BVH 2500 the Modification Proce dure C D or Modification Procedure A Applicable to BVT 2000 1000 to 63099 SG l board PWB No 1 588 049 11 2 13 or 14 The SG 18 board does not have a small board SG 69 on it IC U6 pin 4 4 IC U6 pin 3 1 7 5V Add a jumper edge connector 18B component side 5V 9 PE CO 15 OA 14 U 6 OS ...

Page 130: ... RS510 located at address T6 from the SG 18 board Step 3 Prepare two eight pin sockets cut off from a 20 pin single in I ine socket and install one at former IC T6 pin 1 to pin 8 the other at former IC U6 pin 9 to pin 16 Step 4 Replace C129 130 and 131 all located at address U7 0 022 50V CERAM IC 0 1 50V Step Cut the trace solder side IC P5pins10 12 13 X R166 Step 6 Add six jumpers solder side For...

Page 131: ...2 00 SG 18 Board I 5v b IO 022 z o I I Z FROM A _ IC4 M87051 SG88KU 3 14 A4 13 A3 12 A2 1 A1 4 10 AO TO D _A_H I_ J 5V R1G6 3300 NOR CONF L __ C508 0 001 J lIU 16 LINE VSET FROM A 1_ I BVH 2000 U C BVH 2180 U C BVH 2500 U C DOIt 1 i Dl 2 i B 02 3 5 C D34 6 045 2 DS 6 7 06 7 D7 9 SV SN74LS161AN 9 LD 2 21 ...

Page 132: ... X Edge connector 188 Step 3 Remove SG 69 board from SG 18 board Step 4 Replace C129 130 and 131 all located at address U7 0 022 50V lIB CERAMIC 0 1 50V Step 5 Cut the trace solder side IC P5 pins 10 12 13 R166 Step 6 Add two jumpers solder side Former IC T6 pin 6 It IC P5 pins 10 12 13 solder side Former IC U6 pn 12 C508 Step For the unit with 52701 to 63099 add another jumper Former IC U6 pin 13...

Page 133: ...ideo Level Control in Bidirex Mode Applicable to BVT 2000 10001 to 63999 BVT 2000 compensates the video level change caused by the tape speed variation Overcompensation however is caused by using BVT 2000 with BVH 2000 BVH 2l80 or BVH 2500 because BVH 2000 BVH 2180 and BVH 2500 has the same function in itself therefore the compensator in the TBC should be killed Note Don t perform this modificatio...

Page 134: ...L SECAM 2 11 6 1 3 84 REC INHIBIT 2 11 6 1 6 3 JP1 OONFI TEST Jumper 2 11 6 JP2 OSC DNI TEST Jumper 2 11 6 JP3 Always open JP4 Always open JP5 NJRMAL FWD TEST Jumper 2 11 6 JP6 VIDEO ROC OFF TEST Jumper 2 11 6 JP7 VIlE TEST Jumper 2 11 6 section SY 19 Board 81 REACTION T1ME 2 11 7 1 6 3 4 12 1 4 13 8 4 13 10CA203H 2 11 7 1 6 3 4 12 1 4 13 8 4 13 10CA203H 83 Test 2 11 7 4 13 1 4 13 8 84 PARA RUN ON...

Page 135: ... 13 6 81 2 HARD CPU Access Inhibit 2 11 9 Sl 3 Always set to off 81 4 Always set to off 82 TAPE RON NORMI P 2 11 9 1 6 3 RL 12 Board 81 SKEW AUTOIMANU 2 11 10 1 6 3 a 17 Board 81 ADV BVT OFFIBKH 2 11 11 1 6 3 S2 CAP IlXX 4F 2F NrSC 2 11 11 1 6 3 CAP IlXX SF 4F 2F PS PM 2 11 11 1 6 3 S3 1 CF Lock Mode 2 11 11 S3 2 Auto PG ON OFF 2 11 11 3 24 7 S3 3 Always set to on 83 4 Time campen ON OFF 2 11 11 S...

Page 136: ...nput Level sel 2 11 14 AE 03 Sl S2 81 A 3 SEL MIC LINE TC Select Switch 82 A 3 SEL INT EXT I EXT 2 Select Switch Refer to section 1 AE 03 board VM Ol Board 51 MONrroR ffi TBC SPARE 2 11 1S 52 VIDEO OOT 3 DEMODIBKH 2 11 1S 53 VIDEO OOT 1 2 DEMODIBKB ffi 2 11 1S 2 EQ 02 Board EQ 02 JP3 o JP1 JP2 c r J Sl 81 VIDEO EQUALIZER AUTO MANU Switch Refer to section 1 EQ 02 board JP1 JP2 DROPOUT SIGNAL SELECT...

Page 137: ...ollows BV H 2000 U C IPS PM BVH 2180 U C PS PM 2 11 5 MD 14 Board MD 14 JP5 c I J JP1 JP2 Sl JP3 E3 JP4 Refer to section 1 MD 14 board RV5 Refer to section 13 12 for alignment procedure is INPUT position the VIDEO RF meter shows a input video level and indication can be selected by the setting of JP3 JP4 as follows Short JP4 and open JP3 for standard setting JP5 JP6 00 02 04 MODEL SELECT Jumper JP...

Page 138: ...can be performed SI 3 TENSION RELEASE Switch It functions when S9 7 on the SY 79 board is set to ON Normally SI 3 is set to OFF and when the STANDBY ON condition continues for 30 seconds the tape will slacken When the BVH 2000 or BVH 2180 is used as a for on air etc 81 3 must be set to ON this case when the STANDBY ON condition continues for 2 seconds the tape will slacken and the DT mode will go ...

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Page 140: ...ss A200H A20 IH JPI open JP2 Always short JP3 Always open JP4 Always short JP5 open JP6 short 2 11 8 SY 80 Board SY 80 S1 E3 S2 BOS8 S5 9Cl S6 AI S7 S9 Switch 82 TEST LOWER Switch Used for testing the system control Refer to sections 4 12 1 and 4 13 8 Switch Used for testing the system control Refer to sections 4 13 1 and 4 14 1 84 TEST Switch Used for the system control Refer to sections 4 12 1 a...

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Page 142: ...al which has been recorded in the tape set to ON When not compensating set to OFF 83 5 PG PHASE PRESET Switch 83 6 PG PHASE PRESET Switch Used for adjusting the PG phase of the R P head and the PLAY head Refer to section 3 24 7 83 7 AUTO SKEW ON OFF Switch Refer to section 2 11 10 83 8 TRACKING SHIFT Switch When the S3 8 is set to ON during the playback mode with the RIP head each phase of the aud...

Page 143: ...ways set to ON 81 3 Always set to ON SI 4 NTSC PAL M Always set to OFF PAL SECAM Always ON Set to ON the BVH 2000 and BVH 2180 Set to OFF for the BVH 2500 84 Always set to OFF for the BVH 2000 and BVH 2180 Used when adjusting for the BVH 2500 BVH 2000 U C PS PM BVH 2180 U C PS PM z o t 1 1 t o Z ...

Page 144: ...or 37 50 Output Pattern each CH impedance A B C 0 E F G H I GOOn DO DO DO DD DD DD DD DD DD 150n X DO DO BEl GfJ DD DD DD DD 31 5n X X CXJ GfJ G EJ G EJ G EJ GEl GEl CQ Leave shorted CXJ Open Cut pattern DO Leave open 0El Short Solder Audio I Audio Z Audio S Audio t l11rrlnt311 Audio I 2 3 4 Irnnedance Select J UJHUc J COMPONENT SIDE CH 2 JP201 JP202 CH 1 JP101 JP102 SOLDER SIDE BVH 2000 U C PS PM...

Page 145: ...PM BVH 2180 U C PS PM LA 02 COMPONENT SIDE I I I I B I I I I I I CH 2 JP204 JP203 CH l JP104 JP103 CH 3 JP306 JP305 CH 3 JP304 JP303 CH 4 JP406 JP405 CH 4 JP404 JP403 board makes 4 line Jumper plug Reference CH l CH 3 CH4 input level JP103 JP105 JP203 I JP205 JP303 JP305 JP403 JP405 104 106 204 i 206 304 306 404 406 8dB JP103 JP105 JP203 I JP205 JP303 JP305 JP403 JP405 12dB JP104 JP106 JP204 I JP2...

Page 146: ...NITOR INPUT connector can be outputted from the VIDEO MONITOR OUTPUT connector Also when the WAVEFORM MONITOR select button is set to SELECT VIDEO the supplied to the SPARE MONITOR con nector can be outputted from theWFM MONITOR OUTPUT connector Switch when the connector or the renroducec from the tape to the VIDEO 3 OUTPUT connector Set S2 to BKH position when the r 1 Y n C 1 ta or video selected...

Page 147: ... on the control panel become inoperative and they are controlled from the external equipment However when the the TAPE EE Select Switch SERVO REF Select SWitch HEAD Select Switch When nertormmz 2 12 4 Color Frame Editing using When installing the Sony plug in TBC in the BVH 2000 2180 and performing the color frame editing by using the BVE SOOO P or BVE 3000 P modify the BVH 2000 2180 as follows th...

Page 148: ...older side IC2 pin 7 IC6 pin 4 IC3 pin 2 Add a jumper IC6 pin 2 solder side Add a jumper IC6 pin 5 solder side R DISPLAY BOARD rc 6 SN74LS08N SN7447AN IC2 6 2 14 OUTPUT OF AUDIO 3 MONITOR SIGNAL FROM WFM OUTPUT Perform following modifications When the WAVEFORM MONITOR select switch is set to SPARE the AUDIO 3 monitor signal is outputted from the WPM OUTPUT connector Modification Procedure the MOTH...

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Page 151: ...pe stick to the entrance the NOTE 2 BVH 2000 PS 00 model has the guide post 2 instead of the audio CTL monitor head but it has not the mini tension arm clean NOTE 4 Clean the rotary heads in the direction of their rotation and never Do not CLEANING PIECE LOWER DRUM ENTRANCE SLANT GUIDE Fig 3 1 Cleaning of the Surfaces of Guides and Heads on the Tape Path BVH 2000 U C PS PM BVH 2500 U C P 3 3 w U z...

Page 152: ... the HEAD selector to RIP 2 Connect the oscilloscope to board and TP2 3 Play back the WHITE segment of the alignment tape and check that the RF envelope is within the specified values shown in Fig not the L 1a n ul adjustment 4 Pull and turn the TRACKING control in both directions and check that the RF waveform maintains almost flat envelope while the amplitude increases and decreases necessary th...

Page 153: ...rn the drum by so as to the video head close to the white pin of the gauge Never touch the head to the pin 7 Adjust the zero adjustment knob so that the gauge indicates zero To measure the projection of sync move the gauge in A direction shown in Fig 3 5 and move it in B direction until it stops Then turn the gauge slowly back toward the drum Measure the head projection as steps 6 to 8 If the proj...

Page 154: ...ideo head a screw a flat washer and spring washer and also replace other shaft screw 4 screw flat washer washer 7 two screws tizntened 6 or 1 2 Remove the three screws securing for 00 or board 8 1 Remove the three 3 the two screws securing pro be is at the mserteu in the measure Clean the cloth moistened cteanmz fluid Refer to a drum b Surface of lower drum come contact with the lower drum c Entra...

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Page 156: ...ove the stationary head cover the drum and the reel Move to the rear of the machine the connectors CN117 CN1l4 and CN112 from the DA 07 board and pull out the connectors CN291 except for 00 model and CN292 from the drum motor 3 Go to the front remove the shield cover of the RP 09 board and pull out the connectors CN263 CN265 CN267 and CN269 4 For the BVH 2000 2180 PS PM 02 04 model or BVH 2500 P o...

Page 157: ...the drum slant base removed from the old head drum assembly with the three screws C4x20 via the washers W4 and the spring washers SW4 to the new head drum assembly Pass the connectors CN114 the base the board inside drum that the lid fits in the upper drum firmly and fix it with the three screws B2 6x6 20 While pushing the movable guide assembly in both directions of the head drum assembly and the...

Page 158: ...erations a Turn off the power b Set the switch S4 on the CD 17 board to 0 and depress the switch S7 for at least 0 5 sec c Depress the switch S3 TEST on the SY 79 board 27 Set the machine in STANDBY mode and confirm that either of the following is or they displayed alternately on the display element NDI on the SV 43 board If different numbers on the CD I7 board FD FE FF 00 01 02 28 Turn off the po...

Page 159: ... be available prepare a cotton swab which the tip are squashed with a hammer etc FREON 113 3 Loosen the screw securing the brush mounting block 2 turns 4 Turn the brush mounting block clockwise until the brush comes out ring grooves then 5 Bring brush into contact with slip ring grooves as shown in the following figure and clean while turning the rotor of the drum 6 Use the brush clean from the br...

Page 160: ...s of cover 3 board from the brush rnn 1ftflft block and the SL 08 board from the head drum assernblv 5 Mount the new SL 08 board with three screws on the head drum and mount the new with two screws on the brush mountmz 6 Mount brush block on head drum the reverse order of step 3 and the so that block can be 7 screw shown in 3 14 so that brush comes to center of the each groove And the brush block ...

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Page 162: ...of the fence touches the cylinder of lower drum and lightly fix the fence with two screws PSW 2 6 X 12 and PSW 2 6 X 8 CD Adjust the setscrew so that the clearance between the upper drum and the fence is 0 15 0 05 mm After adjustment securely tighten the screws which were tightened loosely in the former step Confirm that the tip of the setscrew touches the entrance slant guide block and glue the s...

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Page 164: ...ion every unit time The value shows that the higher the vlaue is the stronger the brake force is C The reel table whose is made of nickel brass is installed However the reel table has also another type that is the is made of alluminum Since each reel table differs in value check the material of the before adtustmcnt D Distinction of reel table knobs CYLINDER KNOB anodized When the color of the kno...

Page 165: ...A 05 board for CN209 remove the Loosen the two set screws shown in 3 17 While pushing the solenoid plunger by hand pull out the reel table Remove the two E 14 Install the three brake band posts 6 Remove each one end of the two springs applied between link stopper and brake links Remove the E ring CD and remove the brake links and 8 Remove the three brake band posts 9 Remove the set screw j and the...

Page 166: ... the link stopper so that the clearance between the link stopper and the brake link top is the value shown in Fig 3 19 Solenoid 23 the has been the of brake solenoid so that brake band is not transformed at the X and Y locations shown in Fig 3 19 and the clearance between the brake adjustment fixture and the brake band is 0 2 mm or more all along the HZ location After the adjustment fix the brake ...

Page 167: ...ccording to step 27 and then install FG 29 Adjust as follows so that the motor FG duty cycle in FWD 3 times normal 50 CD Thread a recorded tape G Turn on the power Set S4 TEST 1 switch on the CD 17 1 least 0 5 sec Connect an oscilloscope to TP3 on the RL 12 board and set the macrnne mode Confirm of 50 If necessary adjust RV2 1 Connect the oscilloscope in the same way to TP 14 of the FWD 3 times no...

Page 168: ...nd stop d After motor stops confirm that the number shown in 3 22 is indicated on the SV 43 board 05 board After the adjustment again carry out step c and then confirm step d Repeat this sequence until the specified value is obtained Note When RV 1 is turned clockwise by one division the figure of the upper digit displayed on ND 1 decreases one and when RVI is turned counter clockwise one division...

Page 169: ...d check that the Fig 3 24 If necessary change the mounting position the adjustment ii REV CW brake torque Set S5 TEST 2 switch on the CD 17 board to B and the rotation of the reel has stopped check that the NDI SV 43 board indicates the value shown in 3 24 necessary the mountmz of the adjustment spring REV ICW by pushing S7 for at least 0 5 sec CD 17 BOARD FWD CCW BRAKE I TORQUE ADJ I Decrease o S...

Page 170: ...inks Remove the three screws CD and remove the brake band guide Remove the three brake band posts Remove the screw j and the brake post which secure the link stopper Remove the four screws and remove the T reel motor Clean the surface of the bosses on which the motor installed and the removed parts Note Take sufficient care not to bend the brake band Installation 12 Pass the three harnesses of the...

Page 171: ...o that the clearance between the link stopper and the brake link top is the value shown in Fig 3 28 When the been adjust of the brake solenoid so that the brake band is not transformed at the X and Y locations shown in Fig 3 28 and the clearance between the brake adjustment fixture 0 2 or all location the fix the brake solenoid PSW3x8 screw 24 While pressing the plunger remove the brake adjustment...

Page 172: ...le r llC hlrICT the two set of the reel table lr r Ar rll r1 nr washer and 29 as follows so that the motor 3 times is 50 a a recorded tape b on the power Set S4 17 board to 1 and least 0 5 sec Connect an to on and the to Confirm that the 50 necessary Connect the oscinoscone the Set the switch S4 on the board to 0 the S7 for at least 0 5 sec cancels the mode g the tape HEXAGONAL WRENCH opposite sid...

Page 173: ...ation the T reel motor executes the of forward d After motor stop confirm that the number shown in Fig 3 31 is indicated by the display element NDI on 05 board After the adjustment again carry out step c and then d Note When RV6 is turned clockwise by one division the figure of the upper digit displayed on ND 1 clockwise by one division the figure increases one e Remove the inertia load reel this ...

Page 174: ...CD I7 board to C and S7 switch for at least 0 5 sec When the rotation of the reel has check that the NO I on the SV 43 board indicates the value shown in the mountmg C 1T1n r ii brake torque Set S5 TEST 2 switch on the CD I7 board to 0 and S7 ENTRY switch for at least 0 5 sec When the rotation of the reel has check that the NOI on the SV 43 board indicates the value shown in 3 33 If necessary chan...

Page 175: ...l the new brake band in the position shown in Fig 3 35 and 4 While pressing the plunger place the brake adjustment fixture C B mark faces the front onto the reel motor shaft as 5 While not pressing the plunger check that the clearance between the link stopper and the brake link 1 0 0 2 mm If is not within of the link stopper fixture and place the reel table While pushing the reel table to the reel...

Page 176: ...acket u lLy 6 screw assernblv with 3 36 7 While fixture 8 When the the brake solenoid transformed at the and Y shown in 3 38 and clearance between the brake band and the brake ment fixture is 0 2 mm or more the After the U _I lJ AAJL AA fix the brake solenoid with a PSW3x8 screw 9 remove brake autustment the table onto the reel motor shaft 1 11C h1 n the reel table to the motor 10 set screws 11 Ch...

Page 177: ...6 board remove remove For PS or model screw B3x6 with the Tape Tension Adjustment 5 stops Connect voltmeter TP12 on board And turn on the power of VTR 7 Confirm that the voltage at TPl2 is OV 30mV If necessary adjust RVl2 on the RL 12 board 8 Confirm that the voltage at TP12 is 2 6V O I5V when the weight is removed from the S tension arm If necessary adjust RVI on the TT OI board Attach without Pa...

Page 178: ...2 Remove the two screws PS3x 16 shown in and remove the T tension arm the new and insert the connector CN004 at its 3 Install post the part of the the shown in the 41 marked T135 as shown Connect the voltmeter to on the And turn on the power of Confirm that the indication of the 0 03V If necessary the the one marked Confirm that the indication of the 4 5 6 7 8 9 confirmation in step 5 steps 5 to 8...

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Page 180: ...nd 3 45 and 3 Remove the two shown in 3 46 and remove the roller assernbtv 4 Place the flat the hatctnnz in detail a 3 46 the flat into close contact with the capstan and confirm that the clearance between the flat and the shaft of the tension arm is 0 05 mm or less as shown in detail b Next move the mini tension arm in the direction shown the arrow in detail a the flat to the indicated dot and da...

Page 181: ...ARM 1 C C C ilr l I ...

Page 182: ... Remove the pinch roller post and the cover post 0 7 Rmove the 4 screws C4x20 and remove the capstan motor Installation 8 Fix the new capstan motor with the four screws C4x20 via washers and washers 9 Reinstall the removed parts in reverse order from step 6 to step 1 capstan motor is renraceu lr r Ar rt1nICT to the 1011oWln flowchart cycle adjustment For pinch roller pressure adjustment prepare a ...

Page 183: ...1 mm as shown in detail b If necessary adjust the stopper position Apply the locking compound to the threaded part of the adjustment screw 14 Press S3 RESET on the SY 80 board FG S4 press ENTRY at least 0 5 17 Set the machine in the following mode for NTSC PM 10 30 FWD PROGRAM JOG mode for PS P 8 25 FWD PROGRAM JOG mode 18 Confirm that the duty cycle of the waveform at TP6 of the CD 17 board is 50...

Page 184: ...e not on the board Set the switch S4 on the board to 0 and the switch S7 for at least 0 5 sec Test mode is released Confirm that the at is OV 0 2V after test mode is released and five seconds If not steps 22 Set the machine in 3 36 CD 17 BOARD TP1 oS7 ENTRY RV1 When the unit is in test mode B TP1 OV 0 1 V Adj ustment RV 1 When the test mode is released TP1 OV 0 2V Adjustment Adjust TP1 again in th...

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Page 186: ...oid so that the clearance between the connection rod and the cushion becomes 7 0 0 2 mm when the solenoid plunger is attracted After the adjustment tighten the three screws securely 5 Install the pinch roller solenoid assembly in the reverse order of the steps to 1 6 Set S4 TEST I and S5 2 switches on the CD 17 board to 5 and I respectively and depress S7 ENTRY switch for at least 0 5 sec 7 Use th...

Page 187: ... flat table insert a thickness gauge with a thickness of 0 4 mm between the head and the flat table depress the shielding case lightly and tighten the Head Assembly Installation 8 Install the head assembly so that the hole shown in 3 the two so the will be parallel to the neighboring audio CTL erase head Note 2 Tighten the two screws finally with a torque of 6 Please may cause Solder the leads to ...

Page 188: ... the head base lightly and the monitor head as shown in 3 57 C onto a flat table insert a thickness gauge with a thickness of 0 4 mm between the head and the flat table depress the shielding case lightly and tighten the previously lightly tightened screws securely 6 Solder the or HD 08 boards to the monitor head Head Assembly Installation 7 Install the monitor head so that the hole shown in 3 57 B...

Page 189: ...new erase head with the two screws PS2 6x6 to so the be 7 Place the erase head as shown in Fig 3 58 C onto a flat table depress it lightly from above and tighten the two screws securely Place the over fix with Attach the CEH 2 board by soldering so that it is in close contact with the rear of the shielding case Head Assemoiv mstananon Fix erase head with two 11 Solder the leads to the head referri...

Page 190: ... tape does not curl near the T tension arm necessary of the upper to section 3 24 2 Confirm the tape in and mode in the same way 3 on the power set S4 I switch on the CD 17 board to 1 and S7 switch for at least 0 5 sec Confirm that the of the waveform of TP6 on the board is 50 when the machine is in 3 times mode necessary RV3 on board 5 the same way confirm a of 50 for the waveform of 6 Set the ma...

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Page 192: ...lignment NO Tape Playback Waveform 3 24 5 Tracking Adjustment 3 24 10 Adjustment Monitor Head NO 3 24 11 Audio CTL Erase Head Adjustment 3 24 6 CTL Head Position Adjustment Audio CTL RIP Head Replacement 1 3 24 8 Overlap Adjustment dyES Audio C I L Monitor Head Replacement 3 24 9 Audio CTL RIP Head Adjustment 3 24 10 Audio CTL Monitor Head Adjustment Note 3 When the head or audio CTL monitor head ...

Page 193: ...ches the guide flange CD Taper guide Tape does not curl Entrance and Exit Tape curl curl Guide 1 Tape does not curl though the lower edge of the tape touches the guide flange Timer roller Tape curls little though the upper edge of the tape touches the flange T tension arm Tape little the of the little 3 If the tape does not run in accordance with the above items adjust the height of the reel table...

Page 194: ... value shown below not adjust the especially guide roller 2 taper entrance slant exit slant post 3 and guide post 1 unless absolutelv necessary When these guides have been adjusted check the tracking and the height of the stationary heads The entrance and exit slant guide adjusted in this section For the not be erase monitor recurred in this section BVH 2000 U C PS PM BVH 2500 U C P ...

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Page 196: ... SHEET REEL WASHER COVER HEXAGONAL WRENCH OPPOSIT SIDE 2mm GR CAP GR FLANGE L GR FLANGE U Lower Do not guide roller 1 2 unless absolutely necessary the curl remains by any means adjust guide roller 1 When guide roller 1 or 2 is moun t the roller after the to the value shown in 3 63 1 Loosen the setscrew 2 Adjust the height of the guide roller by cap Adjust guide roller 1 so that the tape touches l...

Page 197: ...5 Tigh ten the setscrew Timer Roller Height Adjustment Note The height of the timer roller and T tension influences of CAP L F ig 3 64 6 BVH 2000 U C PS PM BVH 2500 U C P arm also 1 Check that the screw of flange U is tightened 2 Loosen the setscrew the machine the that out curl 4 Tighten the setscrew and check that the screw of U is tightened Guide Post 1 Height Adjustment 1 Loosen the setscrew S...

Page 198: ...E I Lower z i SET SCREW o j u w I U U 0 Q a w 0 M 1 of the in HEIGHT ADJUSTMENT LOWER SCREW FLANGE UPPER FLANGE 2 MODE TAPE POSITION SPACER POSITION BEFORE ADJ LOW A F FWD HIGH B IGH A B REW LOW C Slant D rtlllc tmj n1 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P ...

Page 199: ... the S tension arm Lift the arm by hand and then take the hand off slowly so that the arm vibrates freely Wait until the arm stops naturally degital to 2 board Check that the voltage TPI is OV O 03V If necessary adj ust RVI 2 on RL l 2 board 4 Remove the weight from the S tension arm and check that the TPI TP 5V Put the adjustment weight again and vibrate arm freely and wait until the arm stops na...

Page 200: ...ing the tape speed adjustment by playing back the alignment tape in the test mode B but this adjustment should not be used because the tape may be transformed with use C 1 2 3 and Adiustment Connect the frequency counter to TP6 Thread a tape and record a video signal While recording check that the counter reads 839 4 Hz 0 3 Hz for NTSC PAL M 825 0 Hz 0 3 Hz for PAL SECAM If necessary adjust RV9 on...

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Page 202: ...he slant guide must be moved For the relation between the adjustment screw and slant guide see 3 72 Make as much of the i nr IT by adjusting the slant of that the flange does cessively turning the 0 Each height of the guide post 3 and exit slant guide should be adjusted while checking the wave form C adjust the and use screwdriver for M2 6 so TAPE ENTRANCE SIDE ASSY ENTRANCE SLANT GUIDE ASSY TAPER...

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Page 204: ...ckwise waveform is flat it is not return the slant of the entrance slant the Check that the to step 2 and guide again Repeat steps to 15 the waveform becomes as flat as r C C h la and the tape does not curl along the guide 6 Finally adjust so that the 15 17 again by turning the tape does not curl waveform is flat screw of the entrance slant assembly and check that waveform remains flat the wavefor...

Page 205: ...e does not along the guide flange 25 Finally adjust again by turning the height adjustment screw so that the tape does not curl along the guide flange and the RF waveform is flat Tighten the locking screw of the exit and check the RF waveform waveform by ep While confirming that the turn the height adjustment screw of the guide post 3 so that the tape touches the lower flange of the guide post 3 2...

Page 206: ...Fig 3 77 Check of Tape running onto Guide Flange Note The adjustment order of the RF waveform on the tape exit side is as follows waveform 19 27 28 29 30 31 32 33 END C Self Record Playback RF Waveform Check The contact of the tape with the rotary heads is checked by observing self record playback RF waveform 1 Connect the to on board 2 Set HEAD selector to R P 3 Thread a tape and record a video s...

Page 207: ...llnlU1no Adjustment Loosen the four screws fixing turn Check that TRACKING knob has been pushed head base I to 2 7 Insert the hexagonal screwdriver 2 5 mm to the oppo site side into the hole shown in Fig 3 80 Pushing the the screwdriver right or left so that the shows maximum the four head base shown in Fig 3 80 10 Check by turning TRACKING knob that the RF the maximum RF amplitude If it changes r...

Page 208: ...iable range of RV8 proceed to next step 7 Set RV8 in the middle of the variable range 8 Adjust RV5 so that the difference between VIDEO IN and VIDEO OUT is within 1 O 75H as shown in Fig 3 82 If the specified value is not obtained set 5 and 6 of S3 as follows and adjust R V 5 again so that the phase difference is within o When VIDEO OUT is in advance of VIDEO IN 5 ON 6 ON When VIDEO IN is in advan...

Page 209: ...CH 2 is within 1 1 usee If specified value is not obtained perform the If snecmed value ontameu proceed step Adjustment 13 Adjust RV 6 on CD 17 board so that the phase differ and OUT usee 14 Reset 2 of S3 on CD I7 board The AUTO PG operates keeping 3 of 83 ON BVH 2000 U C PS PM BVH 2180 U C PS PM IN VIDEO OUT RV6 CD 17 BOARD 3 83 io l n v Mode Adrustrnent in 3 61 w u Z Z w I Z o j ...

Page 210: ...liminary Information 1 Overlap means the segment of the playback RF wave form cut off by PB switching 2 When overlap Band C in the odd field are adjusted it is not necessary to adjust dropout A and overlap on the tape exit side the even field 3 After performing the overlap adjustment the following clearance must be checked CD Clearance between guide bracket and drum is 0 09 mm or more CD Clearance...

Page 211: ...r more 1 When the overlap B is less than the specified value See Fig 3 85 a b While to the head drum assembly move it in the direc tion of the arrow CCW c Tighten four screws marked tJ and check the d the lrt1l11C 1r 1I Y n t clockwise press it against the movable guide assembly and tighten the screw Note When move the movable guide assembly 1 mm BVH 2000 U C PS PM BVH 2180 U C PS PM and EQ 02 BOA...

Page 212: ...nd and keep the head away from the entrance slant guide assy Check by using the thickness gauge that the clearance between the guide bracket and upper drum is 0 09 mm or more 5 Check the overlap again by performing Steps 4 and 5 in Check procedure Repeat Steps 1 to 5 untill the specified value is obtained When is out the value 1 Loosen screw P shown in Fig 3 88 1 2 to 1 turn Note Do not loosen scr...

Page 213: ...n 3 89 Check that there is no space between the audio C I L R P head and the flat plate when the plate is put on the audio C I L erase head without any space and also check space the and put on the audiojCTL monitor head except for 00 model or the guide post 2 for 00 model without any space 2 If there is a space eliminate the space by turning the zenith rI i 1 Y tr 4 BVH 2000 U C PS PM BVH 2180 U ...

Page 214: ... obtained Note The screws should be tightened with 6 to 8 kg ern torgue 5 Play back the audio 15 kHz segment of the alignment tape and adjust the scope so that the amplitude of and is 6 Check that the phase difference between AUDIO l and A UDIO 2 is within 30 degrees See Fig 3 91 If the specified value is not obtained repeat Step 4 again Height Adjustment Check 1 Connect the oscilloscope to AUDIO ...

Page 215: ... is the specified shown in If is to value is not obtained perform the following adjust ment Adjustment Check that not loose 6 Loosen the height adjustment release screw 1 2 to 1 turn 7 When the fluctuation adjustment screw is turned clock wise or counterclockwise little and whether the in 0btained Repeat the adjustment and check procedures until the specified value is obtained 8 Tighten the height...

Page 216: ...enith adjustment No 60 A Zenith Adjustment 1 Put the flat plate on both audiojCTL RjP head and audiojCTL monitor head as shown in Fig 3 95 Check that there is no space between the audiojCTL monitor head and the flat when the is put the head also that that without 2 there is a equalize minimize each space by turning the zenith adjustment screw of the audiojCTL monitor head ADJUSTMENT ADJUSTMENT REL...

Page 217: ...ures can be seen on the scope 3 Play back the audio 3 kHz segment of the alignment tape and adjust by turning RVI06 and RV206 on the AU 27 board so that AUDIO I 2 meters show 0 VUe Adjust so that amplitude audio l channel is 6 Fig If the value is following adjustment Adjustment 5 Loosen the azimuth adjustment screw B and adjust by turning screw A so that the specified phase difference is obtained ...

Page 218: ...gmen t of the alignment tape and adjust the scope so that the amplitude A becomes as wide as possible See Fig 3 99 4 Set SKEW switch to MANU and turn SKEW knob full counterclockwise and then suppose that the amplitude shown on the scope is B Check that the ratio of A to B is within the specified value If the specified value is obtained set SKEW switch to AUTO If the specified value is not obtained...

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Page 220: ... AUDIO 3 LINE OUTPUTs 4 Playing back the segment recorded in Steps 1 and 2 check that the waveform does not change at the IN point If the waveform changes perform the following adjustment Adjustment 5 Take off VIS erase head assy by removing VIS screw 6 Change the thickness of the spacer a If the audio l waveform changes decrease the thickness of the spacer b If the audio 3 waveform changes increa...

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Page 222: ... 7 8 AD MY SG BOARD A D CONVERTER I BOARD MEMORY BOARD SYNC GENERATOR OPTION BVH 2000 U C 2180 U C 47 00 03 BOARD DT DRIVER CA 09 BOARD CAPSTAN MOTOR DRIVER VER 50 RA 05 BOARD REEL MOTOR DRIVER 51 TT 01 BOARD TTP AUX 52 HM 05 BOARD HEAD HOURS METER 53 TM 16 BOARD TAPE RUNNING OPERATION HOURS METER BOARD TAPE DETECTOR 55 TH 03 BOARD THREADING MOTOR 56 TR 07 BOARD TIMER ROLLER SENSOR 57 RS 17 BOARD ...

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Page 230: ...left attached rear unit the the power unit to operate with the voltage range between 90 132V AC 4 3 3 Ventilation Heat Sink The four fans are the 1 2500 If either the intake or exhaust should become clog ged or the fans stop damage may result to the power unit The heat sinks provided on each board are rated on the assumption that cooling will be provided by the fans the unit should not be too with...

Page 231: ...it AC 39 BOARD solder side z o 2 a o LL Z PRIMARY CKT w U a w C I u a 2 a Q Since the switching regulator is mainly on the is beware electric shock shows the of board The heat sinks on the primary zone of the FV 02 VV Oland FV 01 are also connected to the primary Note that the parts indicated by diagonal bars on the AC 39 board active even when power switch off FV 02 BOARD solder side PRIMARY CKT ...

Page 232: ...poten not use cold for for and should ing or checking 6 Do not load with the CN305 4 pin connector and CN309 and CN3 10 3 pin connectors discon nected 4 3 6 LEOs for DC Output Check and board 6 8V 13V for fans 0148 13V for primary ckt CTL 0151 17V for secondary ckt CTL side of DC output circuit is divided according to voltage and each output voltage is determined by an each GND pin Output system 1...

Page 233: ...supplied from Sony Parts Center may not be always identical with the parts which in use due to accommodating the improved parts and or engineering changes or standardization of genuine parts This manual s exploded views and electrical spare parts list are indicating the part numbers of the standardized genuine parts at present Change Parts Regarding engineering parts changes refer to Section Stock...

Page 234: ...umination of the LEDs on the remove the VTR mounted upper guide on the extender for use GUI RED 5V alignment for the BVH series NTSC VTR The contents are shown on the section 4 7 Used for reel brake torque adjustment ordinary empty reel can be used However when the VTR is mounted in a console remove the top flange from the empty reel because the space around reels not enough measure BVH 2000 U C 2...

Page 235: ...entricity adjustment and for rotary head tip projection check labeled JB 4075 Tapered Screw Sony Part No J 6040 460 A Consists of two tapered screws and used for upper position adjustment labeled JB 4045 Thickness Sony Part No J 6041 670 A Used for mechanical parts position adjustment thickness rnm 0 03 0 04 0 08 0 09 O 10 O 11 0 12 0 13 0 14 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 50 0 75 0 80 ...

Page 236: ...nal Screw Driver mm Hexagonal Screw Driver mm Sony Part No 7 700 766 04 Used for stationary head replacement o 1 4 2 0 or 2 5 mm z o i a o LL Z the panel for checking and repairing AC 39 board TOTSU Screwdriver 2 mm ill U a ill CJ Sony Part No 7 721 050 61 Part TOTSU Screwdriver 4 mm Sony Part No 7 721 050 64 Screwdriver for TOTSU type screws shown below Almost all the screws that are used in this...

Page 237: ...d when adjusting tape path USED FOR BVH BVH BVH BVH 2000 1180 1000A 500 2180 1100A 1100 500A INCLUDED 2500 1 J 6041 630 A Tension Scale 200 grams 0 2 J 6042 670 A Tension Scale 1 kgrams 3 J 6041 640 A Tension Scale 5 kgrams 0 0 4 J 6043 1 20 B Tension Adjustment Tool 5 J 6040 750 B Drum Eccentricity Adj Gauge 0 6 J 6040 460 A Tapered Screws 7 J 6041 670 A Thickness Gauge 0 8 J 6040 160 A Flat Plat...

Page 238: ... J 6043 870 A Used when fixing the flange the entrance exit slant guide assembly on the guide post The spacer Sony Part No J 6044 000 A is included in this fixture For replacement of the guide flange contact your sony service office imprinted JB 365 imprinted JB 400 The guide flange fixture is also included in the following guide replacement fixture kit Sony Part No J 6043 730 A for the BVH 1000 1...

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Page 240: ...hen playing back this tape check adjust the audio fre quency response the machine that its output level at each frequency is the reference level at kHz plus the calibration level dB CHANNEL The signal amplitude calibration SYNC CH 3 58 MHz dB dB reference MHz BVH 2000 U C 2180 U C 2500 U C TAPE MUST BE STOPPED IN STOPPING REWIND FAST THE REWIND OR FAST BLACK SEGMENTS ONLY NEVER PUT THE MACHINE INT...

Page 241: ...e the parts kit REC INHIBIT Switch REC INHIBIT Front Panel LG 02 Board State ON ON ON ON OFF ON OFF ON ON OFF OFF OFF TRANSPORT REC TAPE I NHIBI T RUNNING OPERATION 5000 MAX ON r 51 TM LG 02 board __ __ T M 022 4 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P Mother board t m CD 2 s r 5 IC cO lw l I U u l cr C lY lac c l r I I i I 1 2 I f 11 t I r t J I J g g d f sr l lfj U1 lr I l I I I r t...

Page 242: ...4 9 MANUAL OPEN CLOSE OF MOVABLE GUIDE The movable the closed rnaIlualJy z o i 2 a o u Z w U a w f 4 34 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P ...

Page 243: ... is connected to one of the connector panel When one of the function buttons is pressed the message will drsappear BVH 2000 U C PS PM BVH 2180 U C PS PM ABORT Abort Edit Preroll This message will be displayed in the following case and the VTR will be placed into the STOP mode forcibly When one the is When the machine in the AUTO EDIT or PREVIEW mode and if the synchronization is not finished or th...

Page 244: ...Switch Kev Switch on SY 79 may be shorted 1 When the OF check the and on the of the SY 79 board stops at on the of the SY 80 board 1fO FAULTY 11 PART IC 2I CPU CPU doen t work IC IB RAM RAM Data Read Write Error IC lF ROM ROM Checksum Error IC ID ROM ROM Checksum Error IC lC ROM ROM Checksum Error IC IJ RAM Error occures at Common Memerv SV 43 BRD Error occures on SV 43 board 2 SY 79 BRD Error occ...

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Page 246: ...ence of the error is held nowever only can be switched by V J Ul J J J F tunction buttons or the on the SY 43 board becomes w U 0 W C board from the board becomes rmpossible the 1nt prt lrp between 80 boards becomes imnossibte seconds decreases less 80 BVH 2000 U C PS PM BVH 2180 U C PS PM ...

Page 247: ...occurs the mode being executed will continue 1 If the speed during operation deviates at least JOG or less than 3 x normal SHUTTLE 2 If the PB V phase deviates at least 20 psec against the REF V during the 1 x normal BVH 2000 U C PS PM BVH 2180 U C PS PM 02 Color Framing S Tension Error If the tape becomes abnormally tensed or slackens in of the side 05 T while and are playback or recording in the...

Page 248: ...T will be disotavec on the control of the type 2 or 3 When one of the function button is the will LJLJ U Lock If the DME of the Sand or T reel is or the reel turns because the tape is not compteterv wound on the T side reel when loading the tape D4 and DO will up the will be into the STOP mode the alarm on the front will up and the buzzer will sound error condition can be released by stackemnz the...

Page 249: ...m will go into the test mode one RESET switch while the TEST switch S3 SY 79 2 Turn on the power while pressing the TEST switch S3 SY 79 menu the flowchart When the PLAY key is pressed each block will be put into the particular condition described below in order to execute the test hs nl 1VPO on the menu Also when STOP 1S To release test mode press the RESET switch S3 SY 80 or turn on the power ag...

Page 250: ...z o i a o LL Z BVH 2000 U C PS PM BVH 2180 U C PS PM ...

Page 251: ...the address which increases every four clocks is outputted from the CPU to set to ON it is possible to check the address bus and bus buffer on the SY 80 board in a similar manner to 1 above on SV 43 set to ON it is possible to check the address bus and bus buffer the board in to 4 13 7 Test by Memory Readout and also status data which indicates the operating condition of the VTR on the ND1 of the ...

Page 252: ...1 byte of address XXXXH will be displayed on the NDI of the SY 80 board in hexadecimal notation 4 13 9 Monitor Display of Common Memory When making a superimposed display of the contents of the common memory on the monitor set the switches on the SY 80 and TC I4A boards as shown below SY 80 Board TEST DISPLAY switch S9 8 ON TC 14A Board CHAR switch S7 ON CHAR mode switch SI3 A CHAR SIZE switch S11...

Page 253: ...E UP TM2 STOP SUPPLY END MODE END A02E VIDEO SIGNAL FORMAT A02F MODEL VARIATION 00 02 04 A200 r PARALLEL REW COMMON A208 A209 A280 TEST SW A28B A290 0 A29I CONFI JUMPER DT ON DT EXIST TEST ON MODEL PLAY EOT REEL ONLY SHUTTLE Al ERASE Al TAPE A2 Al CONFI CONFI CONFI CONFI A29C A4 A3 A2 Al MUTE MUTE MUTE MUTE A29D I HEAD NORM FWD Y C SEP VID SYNC ROTARY MODE EE ON REC ERASE A29E INTERNAL INPUT ATT P...

Page 254: ...TR will be forcibly placed into the STOP mode the SYSTEM alarm lamp on the front panel will light up and the buzzer will sound 1 When the power supply overheats 2 When the interface between the servo and the control abnormal will Address BIT7 BIT5 4 46 BITO 7 will be HI will sound BKH 201 When the ENTRY or timer RESET button is pressed For BKH 2012 When the ENTRY IN ENTRY OUT or timer RESET button...

Page 255: ... VTR placed into the STANDBY ON mode the drum motor is repeating drivel cancel operation 3 times in In of the cases 1 be set 1 and the SYSTEM alarm lamp on the front panel will light up 1 2 3 When either REC panel or the LG 02 board is set to ON bit 0 will be set to 1 BVH 2000 U C PS PM BVH 2180 U C IPS PM Address AO19H BIT7 FUNCTION ABORT the llL Jc l the of ABORT section 10 bit 7 will be set to ...

Page 256: ... 40 Pin 37 Address A20l case of the the control follows control of 1 IJl1rt 1 of the can be o t c ri connector a of the switches S6 4 5 9 4 to 9 8 on the 79 board will be in each bit Switch S6 When S6 is in the bit 7 will be set to I RUN Switch S4 S4 is on bit 6 will be set to I Switch S5 When will be set to 1 Switch S9 4 Switch S9 5 mode slave machine it is to control the modes shown in the table...

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Page 258: ... o 2 a o LL Z w U a w t bit will the roller rotates in the drrecnon bit 3 will be set to I abnormahtv is not the servo system as a result of initial check with riower rm o be set to 1 and be held at preset BVH 2000 U C PS PM BVH 2180 U C PS PM ...

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Page 260: ...ol of the 1 2 3 is carried out to the of address the content of bit 6 bit 0 as shown below does not SYNC explanation of bit 3 of address A019H connector on the connector remote control is p A the in the desrgnated in the mode in which direction bit 5 becomes 1 mode in which becomes recordmg of CONT recording of AUDIO 2 Bit 0 becomes channel recorumz of the connector on the connector is used and re...

Page 261: ...itch the Sl AE 03 The condition the A3 SEL switch on the AE 03 board is displayed in bit L A3 SEL BITl MIC 1 LINE 1 TC O Switch the REC INHIBIT Switch REC INHIBIT BIT 0 Front Panal LG 02 Board STATUS ON ON ON 1 ON OFF ON 1 OFF ON ON 1 OFF OFF OFF 0 BVH 2000 U C PS PM BVH 2180 U C PS PM Address A29tH BIT7 to panel TAPE and is placed the PLAY mode a nlavback signal from the audio monitor head will b...

Page 262: ...touowmz switches master machine switch S2 3 is set to ON bit will set to I this condition tape will be taken up without undergoma the stop in either the or mode even the switch S5 on the SY 80 board is set to ON S2 2 is set to ON bit 1 will be set to I When svnchroruzrng the with slave the slave When 82 1 is set to A T S2 1 is to and the capstan in 3x or less mode When is set to the tape will not ...

Page 263: ...O REC VIDEO into SYNC or PS 04 model AUDIO 4 will go mode BIT2 A3 REC When bit 2 is set to I AUDIO 3 will go into the record mode case of the the record BITt A2 AUDIO 2 into the is set record mode AUDIO l into the BVH 2000 U C PS PM BVH 2180 U C PS PM Address A29AH BITS TAPE the BIT4 BIT3 BIT2 BITt BITO When the video system is in the mode bit 4 will be set to 1 and in the case of the EE it will b...

Page 264: ...annel with a rotary erase head is bit 0 will be set to HI then the system will receive this and generate an actual control When the ADV switch 51 on the CD 17 board is set bit 7 will be set to 1 bit 5 nectors When the tape becomes at least 5 times normal bit 4 will be set to 1 and the Al and A2 output levels will be attenuated about 20 When the selector is set to and the is in the normal ntavnack ...

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Page 266: ...Speed Check This test permits the following checks to establish whether or not the tape of in the mode is the same as that in the RECORD mode Step 1 Thread the alignment tape Set the TEST l switch to B and press the ENTRY switch The capstan phase lock will go open and the capstan will be the same as that in the RECORD mode Step 2 Place the machine in the PLAY mode and memorize the NDI display on t...

Page 267: ...5 TEST 2 B E TEST 2 C TEST I E TEST 2 D TEST I E TEST 2 E 4 4 Function TEST 3 Switch 7 accordance with of the display on the RL 12 board The following table shows the assignmen of functions of the 8 LEDs display for the positions of the TEST 3 switch BVH 2000 U C PS PM BVH 2180 U C PS PM 4 59 z o I a o LL Z ill U a ill ...

Page 268: ...ay D2 Dl STATE OF MOVABLE GUIDE ON ON UNDER OPEN or CLOSE ON OFF CLOSE OFF ON OPEN DO Tape sensor operation display DO lights up when the tape is wound up on the S or T reel or when the tape is not correctly threaded through the tape sensor In this case the VTR will be forcibly into the STOP mode and the error message TAPE OUT will be displayed on the control panel type 2 or 3 TEST 3 6 D7 Not used...

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Page 270: ...gnal system display D3 D2 NO INPUT STOP button blinks OFF OFF B W SIGNAL OFF ON ON OFF SECAM SIGNAL NTSC PAL PAL M SIGNALS ON ON Color frame detection The meaning of the LED indication will change depending upon the set position of the SC ADJ switch S1 on the SR 15 board as shown below 1 ADJ switch EXT Indicates the of the PULSE input terminal on the connector panel 2 SC ADJ switch FIX MANU Detect...

Page 271: ...data transmission between the system control and servo CPUs are disturbed The motor drive circuits become overheat The threading is incorrected The drum does rotate STANDBY The defective The becomes abnormal The capstan servo is not locked in the record or the playback modes REEL SERVO CAPSTAN SERVO CPU DATA BUS When performing the tape threading or cleaning around the tape path entrance and exit ...

Page 272: ... condition The other important feature is omega wrap main defect consists in the fact that the audio and CTL tracks are duplicated on to the video track The wrap angle of omega wrap is made 344 degree under the Type C format and the audio and CTL tracks are provided separately U lu l l O is with 344 degree wrap system but additional SYNC head prevents this loss N ote Recording and playback of the ...

Page 273: ...CTL MONITOR HEAD AUDIO CTL ERASE HEAD AUDIO CTL RIP HEAD d TAPE SPEED 244 0 mm sec AUDIO 2 AUDIO 1 116 63 CTL HEAD DISTANCE NOTE 1 ALL DIMENSIONS ARE IN MILLIMETERS 0 2 I f W 1 c ififi i I I PLAYBACK PATTERN 1 I PB SWITCHING II RECORDED PATTERN POINT 3 THE OVERLAPS OF FIELD 3 AND 4 ON THE VIDEO AND SYNC TRACKS ARE EQUAL IN FIELD 1 AND 2 RESPECTIVELY BVH 2000 J U C PM BVH 2180 J U C PM 5 3 5 4 N N ...

Page 274: ... C PS PM 2 Following the changes made in the board dimensions the AP 06 board has been replaced by the AP 12 board starting with models BVH 2000 having serial numbers in the 30 000 range and with models BVH 2180 having serial numbers in the 10000 range However in terms of the actual circuitry there is no difference the boards Furthermore the the the This board houses the monitor amplifiers and the...

Page 275: ...uppress the power line noise a filter is used in each of the channels 5 CTL EC Amplifier The REC CTL signal is produced by the CD board based on the REF 4F signal of the SR board and on the REF 2F signal of the board and it is to the board The CTL signal is amplified to the prescribed level bias 198 9 kHz is applied to the signal in order to reduce the recording current and the signal is through t...

Page 276: ...oard without line When the short plug is switched on the line amplifier is inserted between the LINE IN connector and the VR board and the input signal can be amplified by 20 dB There choice of 10K ohm 5 3 line Amplifier Monitor Amplifier The AUDIO 3 channel be switched the input by the MIC LINE CONT signal from the AE board The allowable MIC IN input level is 67 dB to 36 dB and the rnicronnone am...

Page 277: ...Hz The level of the output from the is adjusted by the VR board and the signal itself is returned to the AU board The playback signal returned from the VR board is output from the AUDIO LINE OUT connector the switcher IC 111 and LA board Furthermore part of the signal returned from the VR board is full wave rectified by the meter AUDIO SIGNAL SYSTEM drive circuit and it is supplied to the audio me...

Page 278: ...ssed through the filter are output as the playback while any other the signals to passing the output VTR is switched mode the mode muting signal A3 MUTE is supplied to the 31A at a timmg delayed by 8msec from the A3 TAPE EE signal which is supplied to the 30A pin Ql is a bias trap which is set on during l x speed to reduce the bias leak 198 9 kHz BVH 2000 U C PS PM BVH 2180 U C PS PM the on same b...

Page 279: ...ayback amplifier to reduce the crosstalk 4 PB mode PB AUD 4 to PB AUD 3 Part of the AUDIO 4 playback signal is supplied to the AUDIO 3 to reduce the crosstalk 5 REC mode REC AUD 3 to REC AUD 4 Part of the AUDIO 3 recording signal is supplied to the AUDIO 4 recording amplifier to reduce the crosstalk 6 REC mode REC AUD 4 to REC AUD 3 Part of the AUDIO 4 is to the AUDIO 3 recording amplifier to redu...

Page 280: ...s audio oscillation controlled from baord BVH 2000 U C PS PM BVH 2180 U C PS PM The circuit for and description is confined the AUDIO I channel IC10l is a Miller Integrator which controls the slope of the erase signal s rise and fall The erase signal is supplied to IC3 13 as a square wave which becomes a sine wave in the resonance circuit configured by LV4 CI08 and it is supplied to the erase head...

Page 281: ... bias signal and audio signal are added by the AP board and recorded onto the tape through the RIP head z o 0 w a o LL o 0 o w I I LO 3 Relay Timing Controller The circuitry configuration is the same for each channel and so the description here is confined to the AUDIO l channel IC2 is a Miller Integrator which controls the of the bias signal s rise and fall QIOI and QI02 convert the signal which ...

Page 282: ...ing to the setting of the REC level control the front panel and after this the signals is frequency modulated The frequency modulated RF signal is then amplified by the RP 09 board supplied to the RIP heads and recorded onto the tape During playback the signals recorded on the tape are played back by the heads or heads The RF signals the RIP are EQ 02 board through 09 board while the PB from the h...

Page 283: ... operation with the video input signal whose APL fluctuates negative feedback is applied so that the back porch level of the video signal is set to OVat the base ofQ12 with pulse from the pedestal clam per VIDEO VIDEO IN IVM BOARD I H 1 18UFFER VIDEO SIGNAL SYSTEM order to stabilize the oscillation of the modulator it is clamped at the frequency 7 9 for NTSC PAL M 7 682 MHz for PAL SECAM correspon...

Page 284: ...is installed to the VTR The insertion line can be designated with switches 59 and SIO on modulator by way of the low pass filter R27 R28 R29 CI8 and C19 on the gain terminal of IC3 provide 5 Sync Separator ICI8 19 20 21 30 36 37 level of the video signal is output to OUT OUT of IC3 is Q3 discharged and the modulator oscillates at double the frequency of the carrier The modulator output which is no...

Page 285: ...or as with the modulator output and it is held in C79 The RF pedestal clamper serves to feed back the signal to the FM modulator so that the two held voltages tally and thus the frequency is stabilized From FM Modulator z o a w o o LL o a o w I I lO To FM Modulotor i I I I I I I I I I I I I ___ J L __ Ir n IC29 12 1J IC31 8 Jl lQ MOD OUT FREQ SAMPLING OSC FREQ SAMPLING 9 Video Sync RF Amplifier Q1...

Page 286: ...to this board compensation for the DG gain of these signals are separately for each channel and the signals are combined into a single signal after passing the switcher N ext the D P and response of the signal is compensated for After compensation conversion is made to the emitter coupled logic EeL level by the PB RF limiter and the then output to the DM 25 board RIP DP V PLAY DP V o PLAY VIDEO RF...

Page 287: ...ampled by the timing of the video channel is the same switch has been set to the envelope signal sampled by the timing of the sync channel is output The VM board first amplifies the envelope signal and then outputs it to the WFM MONITOR OUTPUT connector on the connector panel VIDEO SIGNAL SYSTEM 6 Dropout Detector Q37 to 40 IC8 14 21 26 There are two types of dropout detector one detects the level...

Page 288: ...e reference marker generator a pedestal clarnper an AGC circuit for keeping the video level constant in the shuttle EE WHITE REF SW 2 FM Demodulator Q3 to 6 15 ICl to 6 The PB RF or the EE RF signal supplied at the ECL level is converted a TTL by IC6 and after selector IC5 it input to the pulse count system FM demodulator The demodulator output is de emphasized by R66 and C60 it 4 5 MHz for NTSC P...

Page 289: ... VIDEO SIGNAL SYSTEM 6 RF Switching Noise Suppressor QI3 14 ICIB 3B 14 This circuit reduces the dropouts contained in the video signals which is played back from the tape and also the switching noise which is generated when the video sync heads are switched 7 White Marker Generator IC2B 2D 2E 3A3B 3C 4B When the WHITE REF switch SWI on the DM board has been set to ON and the VTR enters the EE mode...

Page 290: ...ctions to select the signals which are output to the WFM MONITOR OUTPUT and the MONITOR OUTPUT connectors and superimpose characters from the time code generator reader onto the VIDEO MONITOR OUTPUT signal eN 37 BOARD VM 01 BOARD CONNECTOR PANEL VIDEO BUFFER MONITOR TC 38A CHARACTER SIGNAL TC 38B CHARACTER GATE 4 CN6576 MS BOARD MONITOR SE CTOR PICTURE MONITOR 8 CN655 I 0 VIDEO O j MON I TOR SELEC...

Page 291: ... the amplifiers for the PLAY heads and by the STRAIN GAUGE for the DT head also functions to signals from the RIP heads and erase heads to the RP board HEAD DRUM o z VI c 0 o UJ o UJ VI 0 UJ FROM RP BOARD VIDEO SIGNAL SYSTEM 4 Pedestal Clamper ICI4 I7 I8 19 Q3 5 6 This circuit holds the pedestal level of the VIDEO MONITOR OUTPUT signal to OV 5 Character Inserter IC9 10 19 20 QI 2 4 When the CHARAC...

Page 292: ...pe However when the back at a different at which the head traces the recordmg not coincide As a result a tracking error slant error is caused 1 1111 11 iT in BVH 2000 U C IPS PM BVH 2180 U C PS PM In the figure A represents the head path with Ix 13 with STILL with 1x and D at 2 5x of the head with respect to the tape speed relies on the tape thus detected and the slant is compensated for so that t...

Page 293: ...for driving the bimorph indicating the head jump are also included along with the wobbling signal the undesirable components are removed and filtered out by a subtracter and high pass filter and only the wobbling components are taken out The wobbling signal which indicates the head movement is multiplied by the amplitude modulated RF envelope signal it passes through the low pass and notch filters...

Page 294: ...the of the PBVXl is for using the IN PHASE generator by the timing of the PBVX2 signal Overlap tracing is required for the video tracks for slow PI2lVbaC C while different speed above the lx normal speed niavback at 1 2x The path of the DT head which is fixed with respect to the recordmz tracks solid on the tape shown as dotted lines In order for tracking to be conducted the DT head must be displa...

Page 295: ...the phase data it determines the amount in accordance with the results obtained DYNAMIC TRACKING SYSTEM 2 FHX Doubler Input into pin 46B on the DT board is the H period FHX signal with of 50 This is with the playback video signal which has been stabilized to a high the AFC circuit and which has been svnc separated from the playback video signal at the TBC One shot IC5K 5 is at the positive going e...

Page 296: ...ses which are output after 2H from the timing at which the output are to the controller IC 5 and are used processing DT mode switching the track jumping with DT reference for the TBC s signal As at the timing of the rise in the equalizing pulse of the PB SYNC it 10 PBVX2 DETECTOR Head Movement Detector This detector monitors the FIL T ST Filtered Strain Gauge head has stopped moving the INTEG OFF ...

Page 297: ... compare the phases of the PBVX2 signal detected from the PB sync signal and of the PBVX 1 signal detected from the FHX signal When the phases do not coincide for 4 fields in succession the H shift generator and DT V generator are reset at the timing of the PBVX2 signal and the phases are brought back into synchronization V SYNC INPHASE DETECTOR z o 0 w 0 o LL o 0 o w I I lO FHXITBCI IC4 0 11 INTE...

Page 298: ... PB Mode 27B OFF TAPE low Tape speed Ix to 3x speed When the VTR is in the shuttle mode the tape is limited to the Ix to 3x range the pin 22A DT HEAD SEL signal low The tape speed is detected by measuring using one shot IC5M the of the timer Hz at lx normal speed input into pin 31B IC4M IO is set low when the tape is in the 2x to 4x speed range The HCAP LOCK signal which has been input into pin 25...

Page 299: ...I I I I I J I U I I I I I I I I I I n l I I I I I I I I I I 11111111111111111111111111111111111111111111111111111111111IIIIIIII1lI11111111Illllllllllllllllllllllllllmllili I I I I I I I I I I I I I I _J J This generator produces the various control signals at the timing of the V and the 7 MHz clock in the NTSC PAL M model or synchronized by the 7 MHz clock pulses which have been divided by 14 in t...

Page 300: ... loaded with the load pulses from the trigger pulse generator it With a lx normal speed the counter data output is latched to the load pulses from the trigger pulse generator at the 32 count it is loaded the value load from that with Ix normal speed and so the value of the counter s is incremented or decremented and the count is changed from 14to 49 10to 52 in the PS model across Ix to 3x speed ra...

Page 301: ...ft selector and the shift amount is controlled Furthermore these data are decoded into a decimal value by IC2E D A converted by jump signal generator IC IP and IC2F the detected is superimposed onto these data and they are output to the integrator Reference should be made to the shift generator sub section 2 for details on the head jump amount as it relates to the In A and data A f A DO R SLOW i P...

Page 302: ...pulse generator IC4L 4 Moreover a low pass filter which wobbling starts smoothly and so that wobbling is not added to which has IU A I WOBBLING SIGNAL GENERATOR IC3H WOBBLING STOP StG WOBBLING CD ADV v WOBBLING CK 2 IC3H 4 fCO NG STOP SIG IC2H 6 IC1H l WOBBLING bunorph drive the touowmz three is Produced 1 Jump signal detected from Af l slope error 2 error 3 Wobbling signal When the INTEG OFF sign...

Page 303: ...o incorrect of the head the current rushing into the integrator is detected by Je2l When exceeds 120 mV 1I is turned off and the FIL T ST signal output is inhibited ERROR G INTEGRATOR ST GAUGE FILT 22 Tracking Error Detector This circuit serves to multiply the envelope signal from the EQ board and the FILT ST signal from the head wobbling detector and to detect the error The RF envelope signal fro...

Page 304: ... preset of the presettable up counter IC lQ and the preset value changes in accordance with the head jump amount When for instance the head 2 D C and A of ICIQ are set to lIDO 1210 and when the counter counts 3 the carry out CO signal is set high and the IC3Q l output is inhibited three are output to the color information signal of pin 30A COLOR INFORMATION SIGNAL GENERATOR EX 2TRACK JUMP D 1 TP7 ...

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Page 306: ...urthermore it displays the characters which correspond to the display data supplied from the SY 79 board on the fluorescent SYSTEM CONTROL BLOCK DIAGRAM BVH 2000 U C IPS PM BVH 2180 U C PS PM Board This board generates the VTR control signals from the equipment which has been connected to the remote connectors and control panel and it writes these signals board addition remote connectors 1 CPU The...

Page 307: ...ting and outputting the remote control data It conducts full duplex communication at a data signaling rate of 38 4 kbits sec which is produced by dividing the 2 4576 MHz clock signal frequency SY 79 BOARD BLOCK DIAGRAM IC2L by 64 and it is conforms to the RS 422 A standard The CPU is every time data or has been concluded either when a response to the transmission is being awaited or order to the r...

Page 308: ...Y 79 board The pulses are counted in the SHUTTLE mode the SY 79 board and by the SY 80 board The third and fourth channel CTCs count the when the timer roller is rotating in the forward or reverse direction SY 80BOARD BLOCK DIAGRAM IC4H 3 ROMs Written into these SY 80 board ROMs are the 12K byte ROM a capacity of 4K byte and the ROMs are accessed by the IC IF OOOOH OFFFH ICID IOOOH IFFFH IC IC 200...

Page 309: ...ecording simultaneous recording playback CONFIDENCE and muting are controlled The of the video and sync heads for recording playback are generated from the vertical and horizontal sync signals input from the servo system LG BOARD BLOCK 01 AGRAM IC3K 2J 3J 5J 4J 5K 4K O DATA BUS 01 DO OUTPUT PORT LG WR F1XX F100 IC1K F106 OUTPUT PORT ADDRESS DECODER z o i a w 0 o LL o a o w I r ui IC1F lG 11 LGRD _...

Page 310: ...wed from the CPU these switches and keys are from the FEOOH address to the address When the SY 79 scan program is started the statuses of the switches to the address data output the CPU are read into the CPU INPUT CONTROL BLOCK IC48 BVH 2000 U C PS PM BVH 2180 U C PS PM Connected to which indicate the type with the VTR is detected ADDRESS FEOOH Bit 7 Bit 6 TYPE o 0 BKH 2011 o 1 BKH 2012 o BKH 2013...

Page 311: ... C 9 8 I LOW LOW FEO H LOW ill HIGH LOW R P A OUT V OUT A IN V IN Reading the Key Data using the Matrix The method described below relates to when the PLAY switch on the BKH 20 13 has been pressed The address decoder IC48 is enabled by the FEXX signal from the SY 79 board it decodes the CONT AO ALA2 signals from the SY 79 board and it scans addresses FEOOH to FE07H on the matrix When the PLAY swit...

Page 312: ...which display differ according to the type of control which is being used BKH 2011 BKH 2012 5x7 dot 40 character BKH 2013 5x7 dot 40 character double row display BVH 2000 U C PS PM BVH 2180 U C PS PM The to BKH 2013 The display data from the SY 19 CPU for the top row of the fluorescent into refresh memory IC21 and ICl4 input into IC9 and ICl3 RAMs In accordance with addresses to AO the data are st...

Page 313: ...the BKH 20I6 converter When the REMOTE switch on the SY 79 board is set to REMOTE I the IC4M 9 and IC4M IO goes low and the SIO IC2I IS TXDA output is converted into a balanced serial signal by line driver IC4 0 2 This serial signal is output from 32B 32A to the REMOTE I connector on the connector panel as the CCl OUT signal Furthermore the CCl IN signal which is input from the REMOTE l connector ...

Page 314: ...g are allocated to the various REMOTE 3 connector of the Pin I FF IN FAST FORWARD command Pin 2 OUT 7 REC SW OUT Low while REC button is depressed Pin 3 OUT 6 PLAY SW OUT Low while PLAY button is depressed Pin 4 OUT STOP SW OUT Low while STOP button is depressed active BVH 2000 U C PS PM BVH 2180 U C PS PM Pin 5 OUT 4 ENTRY SW Low while ENTRY button is depressed OUT REF ERROR SERVO REF panel has b...

Page 315: ...ive This is normally the FF command output pin but when S2 5 on the LG board is set to ON and the SY 79 board 14 is from to this serves as the AUDIO 2 REC control input pin Pin 41 OUT 13 SYNC PRESET STATUS Low active AUD 4REC MODE STATUS output Low active This is normally the SYNC PRESET STATUS output but when S2 5 on the board is set to ON this serves as the AUDIO 4 REC MODE STATUS output pin SYS...

Page 316: ...07FH MAIN SY 80 2 A08OH AOFFH MAIN COMMUNICATION SY 80to SY 79 3 AIOOH A17FH SUPERIMPOSE SY 79 to SY 80 5 A20OH A27FH HARD PORT MONITOR SY 79 to SY 80 6 A28OH A2FFH HARD PORT MONITOR SY 80 to SY 79 BVH 2000 U C PS PM BVH 2180 U C PS PM The main area is assigned as shown below MEl IIORY MAP CONTROL Commands A008 TIMER CONTROL TC GEN Control AOIO SELF STATUS Local Machine self Control Data Commands ...

Page 317: ... 8 is set low The high level output of the flip flop IC IG 6 is input through the inverter IC2G IO into the common memory address selector IC 1 IL and I and the SY 80 board address bus is selected Furthermore the ICI G 6 output disables the bus buffer IC2M through the inverter IC5 E 8 and the SY 79 board data bus is isolated from the data bus of common rYlCl rYlr t lT In addition the low level out...

Page 318: ...y form the transport control area 3 bytes The transport control data is read into address AOOOH which is the 1st byte and the data are into addresses AOOIH A002H which are the 2nd and 3rd bytes BVH 2000 U C PS PM BVH 2180 U C PS PM DRUM MOTOR For instance when the VTR is played back in the PLAY mode 12H denoting NO RMAL PLAY is read into the 1st byte AOOOH is normal addresses AOOIH A002H is not us...

Page 319: ...and not included in the COMMAND CODE this is treated in exactly the same way as the STANDBY OFF command SYSTEM CONTROL SYSTEM COMMAND NAME COMMAND CODE 06 DS 04 JlrISTANDBYOFF 0 0 0 0 0 JIr STANDBYON 0 0 0 1 0 MANUAL JOG 0 0 0 0 JIr REELREV 0 0 1 0 1 2REEL FWD 0 0 1 1 1 zPINCH REV 0 1 0 1 PINCH STILL 0 1 0 1 0 JlfzPINCHFWD 0 1 0 1 1 ITRANSIENTLESS PLAY 0 1 0 0 NORMAL FWD 0 1 1 1 0 3PROG SPEED PLAY...

Page 320: ...EED H fWD 0 A2C6H STATUS 6 REEL ACCELERATION AB A2C1H STATUS 1 REEL ACCElERAT ON ABilITY F401H F402H COMMAND DATA l COMMAND DATA I These are the preset data or 2 byte speed data 10 OOH with lx normal speed which are added in accordance with the mode the data added are the preset data PRESET O is read into address F401 Hand PRESET I is read into address F402H PRESET O F401H PRESET l F402H HSI LSI M...

Page 321: ... o w I I ui CONTROL PANEL KEY BOARD L J 1 Data Presetting The preset data specified by the keyboard on the control panel are stored by the SY 79 CPU in the 8 byte area spanning addresses A008H through AOOFHof the common memory as the timer control data TMC There are four types of TMC data TMCO 1 2 and 3 They are allotted as follows TMCO Timer l TMCI Timer 2 TMC2 User s Bit TMC3 Time Code The data ...

Page 322: ...lock DF ON This specifies the frame CG BLK Character Generator This specifies black for the whole screen 000 TC READER 010 TC USER S BIT READER 011 TIHER 2 101 TC GENERATOR 110 VITC USER S BIT READER T BVH 2000 U C PS PM B VH 2180 U C IPS PM Read The TIMER I TIMER 2 USER S BIT TIME CODE and through F306H on the time code board with addresses F300H are stored in the counter area A300H through A3FFH...

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Page 324: ... Servo Reel Servo Servo Reference Signal Gen Servo Processor Tape Transport Control Lt l U L L Motor Driver Drum Motor Driver Motor Driver Head Hours Meter xunnmg Oneration Hours Tape Detector Timer Roller Rotation Detectton are three the drum and reel servo Each servo system is coupled with two CPlJs and SV board All data required control the servo systems are centralized by the software for optn...

Page 325: ... being applied in V 2 units for the HOST CPU and in V 8 units for the HARD CPU z o a w a o LL o a o w I I LO The main data processed by the CPUs are as follows DRUM SERVO SYSTEM PG Drum rotational phase data FG Drum rotational speed data PB V Tape recording data Head PG relative phase data CAPSTAN SERVO SYSTEM FG Capstan rotational speed data Capstan rotation direction data CTL Tracking data REEL ...

Page 326: ...under normal rotation conditions is controlled by the analog velocity loop configured by the hardware Furthermore to cope with variations in the load and drift in the devices the drum servo the CPUs provide digital compensation and the drum servo s phase and speed under transient conditions are controlled by the drum PG s phase data The drum motor is directly driven by the data from the HARD CPU o...

Page 327: ...while the is controlled by the PB CTL in the lx speed PLAY mode The tape range in the JOG mode is 3 to 3 times the normal speed and the tape is directly driven by the capstan The difference between the rotational speed data of the search dial and capstan FG speed is measured by the and in order to keep the rotational speed of the capstan tracking the rotational speed of the search dial the capstan...

Page 328: ...tor torque necessary for control is calculated by the HOST CPU based on the command reel inertia and tape diameter data and applied via the tension feedback system The timer roller FG are output in two A and FG B and the speed is detected by their time difference In the Ix normal speed mode the timer roller outputs a frequency corresponding to the V In order to maintain the accuracy of the timer c...

Page 329: ...etector Capstan Phase Comparator CTL REC PB Amplifier Color Frame Marker Generator Detector DRUM SERVO SYSTEM Drum Velocity Detector Controller Drum PG Rotation Detector Drum Phase Comparator PB V Phase Detector Drum PG Delayer OTHERS Skew Detector Address Decoder I O Port SERVO SYSTEM 5 7 6 BVH 2000 U C PS PM BVH 2180 U C PS PM WFM CTL To VMl CTL PULSE To RLl CF PULSE To SRl ...

Page 330: ...STAN VELOCITY LOOP Q3 4 IC5 The time difference between the capstan FG A and B is first converted into a voltage it is compensated for by the CAP STAN VC from the D A converter on the RL board the capstan s rotation control signal CAPSTAN MDA is produced and this is output to the capstan drive amplifier on the CA board CAPSTAN VELOCITY LOOP 6A CAP FG A X 7 A CAP FG 8 X TP6 TTL FG A lIC9 4 TP7 TTL ...

Page 331: ...The rotational speed of the capstan is detected by IC5K The CAPSTAN and time difference from IC4N 6 are sampled by the 0 4 microseconds clock pulses from IC4S 6 and is sent to the as the data which indicate the rotational speed The FG frequency differs according to the tape TP6 TTL FG A TP7 TTL FG 8 IC4N 6 tC4C 13 CAP VELO REQUEST TAPE SPEED 0 8 IC51 10 CAP VELO GATE TP16 TAPE SPEED 0 8toO 6 IC51 ...

Page 332: ...lor framing recording is provided by the 3 2 microseconds clock from IC4S 4 by IC5M and it is output from IC5M l3 This pulse is added to the from IC5Q 15 CTL signal at IC4E I0 and this signal is output to the CTL RIP head through the AP baord PB CTL Circuit The PB CTL from the CTL 15A on the CD board via the AP board and in order to compensate the tape timer with CTL it is output 24B to the RL boa...

Page 333: ...3 IC23 DR FG z o a w a o LL o a o w I I Lri The time difference between the capstan FG A and B signals is first converted into a voltage it is compensated for by the DRUM VC from the D A converter on the RL board the drum s rotation control signal DRUM MDA is produced and this is output to the drum drive amplifier on the DA board DRUM VELOCITY LOOP 9A DRUM FG 8 8A DRUM FG A TP12 TTL FG A TP13 TTL ...

Page 334: ...AY head is used The drum PG output from pin 2SB PG PULSE to the LG board and it is used as a reference for the switching position Furthermore the delayed drum PG signal is also used for the drum phase and skew detectors DRUM PG DELAY 12A DRUM PG IC26 7 TP15 IC5F 9 TP23 258 PG PULSE BV H 2000 U C IPS PM BVH 2180 U C PS PM 8 PG Phase Detection The gate pulse corresponding from the positive going edg...

Page 335: ...tor control are from the SV board to the board and are converted into analog signals by the 12 Bit D A converter IC4 SVD7 SVD6 SVD5 SVD4 SVD3 SVD2 SVD1 SVDO SERVO SYSTEM The D A converter IC4 serves to convert by time sharing the euurvatent to 8 channels whose data are by the WRITE ADDRESS 5018H Bit 2 LSB to Bit 7 and 5019H Bit 0 to Bit 5 MSB These signals are selected by the demultiplexer IC6 in ...

Page 336: ...nuators and amplifiers The unstable elements which the of the springs and reels bring to the loop are compensated by the compensators variable attenuator compensates the fluctuation of the frequency response caused by the reel inertia and tape diameter and controls the gain in accordance with the amplitude characteristics This is a PWM type of variable attenuator and its on off ratio is switcned t...

Page 337: ... ANA IN SPR 3 15 a ANA 8US 16 W CO 26A 26A c 0 LL 0 CIl a J 1Il 0 WR4 W I SOlCH r t D NC 218 SPARE IN IC2Q WR ADDR 50leH SELECTION OF BIT 3 B T 2 B IT t RIT O AID INPUT DATA 0 0 0 0 _ EEL ENSION _____ 0 0 0 1 PLAY S REEL TENSION B _ _ _ __ _ _ _ _ 0 0 1 0 T REEL TENSION B 0 0 1 1 12V POWER MONITOR reU 0 1 0 0 S REEL POWER reU f _ 0 1 0 1 T REEL POWER U 0 1 1 0 T REEL MOA B 0 1 1 1 S REEL MDA B 1 0...

Page 338: ...r s rotational direction is detected using the phase difference between the FG B and A signals In order to detect the rotational direction with the minimum pulse change the FG A B signals are sampled by the 1 25 MHz and the microseconds equivalent to one 1 25 MHz cycle and these signals are input into ICI E PROM and detected S REEL FG 8 T REEL FG 8 REV TP3 S REEL FG A TP2 T REEL FG A IC1B Q FWD RE...

Page 339: ...nter is reset by the reset pulse at an interval of field supplied from IC4K 10 SERVO SYSTEM 4 REF SYNC Separator A video signal with negative sync which is clamped by D8 is supplied to the inverting input of IC16 6 and the envelope of sync portion which is detected IC5 and IC7 is to the non inverting input of IC16 6 Based on the relationship between the both the video signal without fluctuation ca...

Page 340: ... 13 6th and from video the so that the oscillating frequency of the VXO Voltage Controlled Crystal Oscillator is controlled IC9 1 IC9 5 IC3F 10 05 IC3F 12 07 TPI4 IC2G 6 The Color frame phase CF PHASE is detected from the relationship between the burst and the REF H signals separated from the input video It is output the RL board via the rnl111t H la va on CD to CPU BVH 2000 U C PS PM BVH 2180 U C...

Page 341: ... by the comparator IC14 The DR pulse converted as a is input to the flip flop IC4H 8 and the pulses correspond to the DR and DB at an interval of SYNC is generated The counter IC4G counts this pulse and the carry out CO is output when the counter counts 15 pulses Flip flop IC4F 6 is output Low High pulses alternately at the timing of H SYNC and if a incorrect polarity of alternation is detected po...

Page 342: ...s frame and converted width of than one field multivibrator IC3 K 9 This is latched that is video detect if the counted down to When theINT4F or the REF generate the REF or the TBC 4F exists are controlled BVH 2000 U C PS PM BVH 2180 U C PS PM z o i a w a O LL o a o w I I Lci ...

Page 343: ...and the RAM These memories are addressed in cornucuon with the so that the access the CPUs hardware are addressed to be continuous the CPU will re start from address 0 whenever the power is turned on or the is reset Therefore the memory adderss is made so that the address decode can the memory of every 4000H address IC28 IC1E IC1F IC1H IC 11 HOST CPU l801 DO I 07 AIO AIO A11 A1l DO I 07 CE OE 2000...

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Page 345: ... lFFFr EN WR v i t J RO z o a w 0 o LL o a o w I ן m Since the HOST side circuit configuration and that of the HARD side are equivalent only the HOST side is explained 1 Overtime Detector The overtime detector consists of the retriggerable one shot IC2N having the approx 5msec time contant In the normal operating condition the address decoder IC3N 6 addresses 1400H to 15FFH Low sends the trigger p...

Page 346: ...he SY READY input from the pin No SV 43 SY 80 IC3P 3Q I AOtA1 I 4 BYTE I SVS SY I INTERFACE I MEMORY I I IC4P 4Q I I 4 BYTE I I SV JSY I INTERFACE I I MEMORY I 55 WR 00 07 55 RO 55 AOtA1 RO BVH 2000 U C PS PM BVH 2180 U C PS PM The SV 43 board controls all the rest of circuit board that are used servo Control is made from the SV 43 other servo boards mainly through the HARD CPU s bus but partly th...

Page 347: ...SY READY When the SY 80 s CPU operates normally l is read HARD This data is detected by CPU s program error detector When HARD operates 1 is read DO REF V The REF V signal having the duty 50 cycle with negative going edge of vertical timing is read SERVO SYSTEM OUTPUT The output port of the CPU consists of IC5I that is addressed as 1200H WR mode This output port is mainly used to inform the HOST C...

Page 348: ...5081H D7 BOARD NG 0 read when even one of any servo related boards installed when any connector D5 when of the such the drum capstan or reel motors increases until the overheat temperature detector in each motor driver boards detects an overheat HARD RESET IN I is read when the above mentioned D7 BOARD NG or D6 OVERHEAT takes place or when the machine initialization program This Not D3 REEL TEMP W...

Page 349: ...ng as the HARD CPU operates normally 1 is output DO INT TIME During when the HOST CPU is processing the interrupt routine DO is set to I The time required for interrupt routine can be measured at TPI3 SERVO SYSTEM Address 5081H D5 MINI ARM This signal is used for controlling the mini tension arm 1 is output when the machine operates in the VAR JOG or less than 3x NORMAL SHUTTLE modes so that the s...

Page 350: ...ead 3 Remove the harness from the VIS head then remove the head 6 1 Note The spacer will be used 4 After the head assemble the parts in the reverse order of step 3 5 Solder the harness to the head See 6 2 6 Mount the VIS erase head in the order of steps 2 and 1 7 Connect the connector CN383 to the BE 02 board 8 Turn the motor with a flat blade screwdriver to close the slant and make sure that the ...

Page 351: ... a thickness gauge with a thickness between the and the magnet holder from above and screws 7 Insert the bent part of the hole of the base as shown in 6 3 and of the timer roller shaft 3 or 4 turns Insert the into the screw hole of the base boss and the set screw 4x6 8 the upper so that the dimension from the installation surface of the timer roller to the bottom of the upper becomes 62 700 mm or ...

Page 352: ... reel motor reptacmz the reel table made of hrass with other reel table check the material of the cylinder hefore adjustment hecause the adjusting value of the hrake torque differs in the material KNOB tanornzeo r different nickel plated reel I Replacement I I BVH 2000 U C PS PM BVH 2500 U C P 6 3 6 3 1 S Reel Motor Assy Replacement 1 2 3 4 the the Remove the cover and reel washer shown 6 4 Remove...

Page 353: ...ion 3 24 2 a Remove the tape cover and reel washer see Fig 6 5 b Loosen the two set screws securing the reel table and turn the height adjustment screw Note 1 One turn of the screw changes the height by O 7mm Note 2 Turn the screw as follows If the tape contacts the upper reel flange turn the screw clockwise If the tape contacts the lower reel flange turn the screw counterclockwise c While pushing...

Page 354: ...the duty cycle of the waveform at TP3 is 500 0 If necessary adjust RV2 CD Connect the in the same way to TP14 of the RL 12 board and confirm that the duty cycle in FWD 3 times normal speed mode is 50 10 If necessary adjust RV4 Set the switch 54 on the CD 17 board to 0 and depress the switch 57 for at least 0 5 sec This cancels the test mode Remove the tape BVH 2000 U C PS PM BVH 2180 U C PS PM BVH...

Page 355: ... d After motor stops confirm that the number shown in Fig 6 7 indicated the element ND on the SV 43 board If necessary RVI on the 05 board After the adjustment again carry out step c and then confirm step d Repeat this sequence until the specified value is obtained Note When RVI is turned clockwise by one division the figure of the upper digit displayed on ND 1 decreases one and when RVI turned co...

Page 356: ...he value shown in Fig 6 8 If the value is not within specifications change the position of the spring FWD CCW as shown 6 9 brake ENTRY rotation the reel has confirm the ND 1 on the SV 43 board indicates the value shown in Fig 6 8 If the value is not within specifications change the position of the spring REV ICW as shown in Fig 6 9 12 Set both 54 and S5 to 0 and depress S7 for at least 0 5 sec to ...

Page 357: ...the power supply block Remove the connectors CN202 CN20S and CN207 from the RA OS board and remove the harness of CN207 from the clamp 5 Remove the four PSW 4x6 screws securing the reel motor assembly 6 To install the new assembly reverse removal procedure PSW4x16 T REEL MOTOR ASSEMBLY COVER PSW4x16 RK6x12 Fig 6 10 T Reel Motor Assembly Replacement 6 8 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 250...

Page 358: ... 8 to the IOIlOWlng sequence a Remove the tape cover and reel washer b screws securmz 9 least 0 5 d 54 on the for at least 0 5 and BVH 2000 U C PS PM 80 U C PS PM BVH 2500 U C P REEL WASHER COVER IGHT ADJ SCREW inside of this hole CD l BOARD I Z w w u t J CL W ex cO L 12 BOARD TPl A B ...

Page 359: ...f forward reverse a nd stop d After motor stop confirm that the number shown in Fig 6 13 is indicated by the display element ND 1 on the SY 43 board If necessary RV6 on the 05 board After the adjustment again carry out step c and then confirm step d Repeat this sequence until the specuieu value is obtained Note When RV6 is turned clockwise by one division the figure of the upper digit displayed on...

Page 360: ...in Fig 6 14 If the value is not within specifications in Fig 6 15 torque Set S5 TEST 2 on the CD 17 board to D and depress S7 ENTRY for at least 0 5 sec When the rotation of the on the SV 43 board indicates the value shown in 6 14 the value is not within change the posruon of the spring as shown in Fig 6 15 S4 release the test mode o S7 ENTRY SV 43 BOARD ND1 z ui 2 w u J Q W a ND1 hexa decimal dis...

Page 361: ...embly C Replacement and the subsequent adjustment should be performed as follows D Prepare the following parts for the replacement Taper shaft screw Sony part No J 6040 460 A Upper drum eccentricity adjustment gauge Sony part No J 6040 750 A or J 6040 750 B E During replacement turn off the power Removal 1 Remove the stationary head cover the drum panel and the reel panel 2 When the movable guide ...

Page 362: ...ce and The of on assembly was installed The surface of the lower drum assernbtv in contact drum 16 17 18 and put the connectors designated nostttons on r z w w u J 0 W 0 co RP 09 BOARD Hole for passageof CN 112 PIN ECCENTRIC STOPPER Drum Assemblv II l lc J II C ilI JI BVH 2000 U C PS PM BVH 2180 U C PS PM R PIN ...

Page 363: ... arm it the of the dial gauge 23 6 18 and back knob so that the gauge 26 z ui w u l 0 W a co b the of screwdriver or a hammer tap the inside of the upper drum to the gauge so that the gauge shows 1 3 of the maximum value c the upper drum hand and check that of the needle is within 3 um the is over 3 urn repeat steps a band c until the becomes 3 Lm or less 27 upper drum by the two C4x 14 the upper ...

Page 364: ...nd check that the paper or video tape inserted in step 33 can move smoothly in two including Speed Adjustment 1 HD S7 for at Set the machine in STANDBY mode and that either of the following is displayed or the following is displayed alternately on the display element NDI on the SV 43 board If the different numbers are displayed adjust RV4 on the CD I7 board NDI display FD FE FF 00 01 or 02 Turn of...

Page 365: ...ide post 2 Perform the adjustments subsequent to the audio C l L RIP head adjustment of the flowchart shown in section 3 24 1 Guide post 3 and taper guide Perform the checks and adjustments subsequent to the tape path adjustment of the flowchart shown in section 3 24 1 C When the guide has been worn out turn the worn surface see the detail of Fig 6 21 into the position not comming in contact with ...

Page 366: ...hreading motor with a flat blade screwdriver to open the slant guide 2 Remove the two screws securing the entrance slant guide assembly and remove the fence 3 Remove the following parts see Fig 6 24 a Loosen screw CD remove the com pression When the post or remove the fixing screw d Remove the two screws CD and remove the guide post from the guide bracket e When replacing the guide bracket remove ...

Page 367: ...mm thickness gauge cannot be inserted between the guide bracket and guide flange 11 When the guide bracket has been replaced drive the slant adjustment screw into the guide bracket and put the steel ball and slant adjustment rod into the hole of the guide bracket shown in Fig 6 26 12 Reassemble the guide referring to Fig 6 25 but do not tighten the C4x20 locking screw firmly Slant and Height Adjus...

Page 368: ...5 mm After the in the former Confirm that the of the setscrew touches the entrance slant block and the setscrew in step with adhesive like a and Adiustment Entrance the slant and insert a l inch video in two between the slant incl the the upper drum the slant the tape moves srnootntv 23 Perform the tape in accordance with the flowchart of section 3 24 1 BVH 2000 U C PS PM 80 U C PS PM BVH 2500 U C...

Page 369: ...de flange pushing screw hand and then tighten the flange fixing screw securely 8 Remove the accessory screw and loosen the flange pushing screw and remove the guide post Reassembly of Guide Exit Side 9 Pushing the guide post in the direction shown by the arrow see Fig 6 31 fix it to the guide bracket with two P2 6x6 screws applied with adhesive such as locking comnound and W2 6 washers 10 Check th...

Page 370: ...15 ...

Page 371: ......

Page 372: ...DP COntrol 13 30 5 RV6 PLAY EQ V Control 13 30 2 RV7 PLAY Contra 13 30 5 RV8 PLAY EQ S Control 13 30 2 1 A1 REC EQ Contro 14 RV109 A1 REC LEVEL Control 12 12 AE 03 Board Section Section RV9 13 30 7 RV10 13 30 7 RV1t 13 30 8 RV12 13 30 8 RV13 3 30 2 RV14 13 30 7 RV16 13 30 8 RV18 13 30 5 RV21 13 30 2 RV22 13 33 RV23 13 33 RV24 13 32 RV25 13 33 RV26 13 32 RV27 13 34 RV28 13 30 3 RV30 13 35 RV31 13 2...

Page 373: ... RV20 1 28 Section RV8 3 24 7 10 7 11 15 1 RV9 3 24 4 10 4 16 RVl 1 13 16 RV12 1 14 12 17 RV13 12 12 5 RV14 11 7 RVl RV16 RV17 1 9 SR 15 Board Section LV1 11 20 RV1 1 21 RV2 1 21 Section RV3 1 17 RV4 1 2 RV5 CF SC ADJ Control 4 4 4 21 RV6 1 18 RV7 1 19 DT 04 Board Section R3 14 6 R5 14 6 R6 14 6 R9 14 6 R30 14 7 R33 14 6 Section R61 14 5 R87 14 5 R94 14 10 R96 14 10 R98 14 7 R99 14 2 R138 R139 R50...

Page 374: ...6 RV17 13 7 VIDEO LEVEL Control 1 4 1 TRACKING COntrol 1 4 1 BVH 2000 U C PM BVH 2180 U C PM AC 39 Board Section RV30 1 9 RV302 Section CT 36 Board RV171 9 1 14 VV 01 Board 1 FV Ol Board Section CT 36 Board RV171 9 14 RV1 9 3 RV2 9 3 3 RV3 9 3 4 RV4 9 3 1 RV5 9 3 1 RV6 9 3 2 RV1 l2 RV2 12 1 RV101 12 1 RV102 12 1 RV3 13 3 RV4 13 4 Section RV303 9 Section FV 03 Board RV651 9 1 16 Section PA 19 Board...

Page 375: ......

Page 376: ...EO IN TO TBC 14 TO VTR FRAME PULSE OUT WFM OUTI I I I I I I I I I I I I I I L ______ J 75fi OSCILLOSCOPE T 1 CH 1 CH 2 OUT IN When the adjustment of section and 13 30 6 prepare the Spectrum Analyzer 13 30 4 CONNECTION 2 For sec 13 31 2 SIG GEN 1410 BVH 2000 U C 2180 U C CONNECTION 3 BVH 2XXX TBe I N a WAVEFORM MONITOR 6 ORI e H A OUT IN zsn CONNECTION 4 BVH 2 XXX TEST SIG GEN TEK 1410 VIDEO __ iVI...

Page 377: ...er normal operating condition are differed After completion of the electrical alignment do not forget resetting the V BLANKING switches correctly Change the programming of the V BLANKING LINE SELECT switch as follows SG 28 BOARD BOARD NO 1 600 163 11 NORMAL ON 1c 2c 3c 4c Sl 5C 6c 7c 8e ADJUST ON 1 c 2C 3a 4 Sl 5c 6c 7 8c 1 S2 1 2c 31 l 4KJ S2 5 J1 J 16 J l 17 J II _8_ _ Set the positions from 3 t...

Page 378: ...DE SHUTTLE Sw OFF S2 2 DELAY ENABLE Sw OFF S2 3 PLAY REC EOT INHIBIT Sw OFF S2 4 LEVER SW ENABLE Sw OFF S2 5 AUDIO REC ENABLE OFF S2 6 TC SENSE MODE SELECT Sw OFF 52 8 MODEL SELECT Sw Depends on model S3 PLAY MODE Sel Sw 1 5HD 54 REC INHIBIT Sw Oepends on each sections JP1 CONF I TEST OPEN JP2 OSC CONT TEST OPEN JP3 OPEN JP4 OPEN JP5 NORMAL FWD TEST OPEN JP6 VID REC OFF TEST OPEN JP7 VID TEST OPEN...

Page 379: ... REC CONFI OFF Sw OFF 59 2 AUDIO EDIT Sw OFF S9 3 EE MODE Sw OFF 59 4 PREROLL MODE Sw OFF 12H 59 5 DISPLAY MODE 5w Oepends on usage 59 6 IN PO NT SYNCHRO 5w OFF S9 7 SYNCHRO OFF 5w OFF 59 8 TEST DISPLAY Sw OFF SV 43 Board Sl 1 FREE RUN 5w Sl 2 HARD CPU DIRECT ACCES5 INHIBIT Sw OFF OFF 51 3 OFF 51 4 OFF 52 TAPE RUN 5w NORM RL 12 Board 51 SKEW Sw AUTO CD Board Sl ADV Sw BVT S2 CAP LOCK Sw 2F 53 1 CF...

Page 380: ...21 Board D CT 38 Board D VV 01 Board CT 37 TP207 r1 P2 LJ TP209 TP204 L J LJ TP208 TP206 CT 37 TP212 CT 36 7 J TP214 L TP215 r LoA TP216 TP213 CT 37 TP221 220 lJ 1 TP222 TP223 CT 36 7 L I CT 37 TP225 TP226 TP218 J J TP228 TP224 J TP227 TP203 r1 LJ TP211 r 1 1 TP219 TP217 I BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 9 1 CT 36 4 Board CT 36 1 Board RV672 G RV671 G SR VH I Z w Z CJ J J a a ...

Page 381: ...ex ill s o D o RV302 RV303 RV301 CT 36 2 Board RV171 CT 36 3 Board EJ OTP14 TP22 o 9 2 TP15 RV1 OTP1 TPE1 RV2 OTP200 RV3 TP3 TP16 TPE2 o RV4 O TP4 TP5 TPE3 RV5 O 0 OTP17 RV6 OTP6 TPE4 RV7 TP18 RV8 O 00 TP8 TPE5 RV9 TP9 RV10 OTP10 OTPE6 RV11 TP11 RV12 O TP12 OOOTP23 RV13 TP13 0 TP25 TP24 TP26 TP21 TP20 TP19 000 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P ...

Page 382: ...ts When performing the AC 39 board check and adjustment use CD Extension only CD BOARD BOARD EXTENSION CABLE ASSY BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P of turned off the fixture installation and removal must be after cord and minutes or more Step 1 Fan Motor and Side Plate Removal Open the power unit by loosing the six screws on the rear panel and fix it with the stopper See section...

Page 383: ...d between the VTR and the power unit Connect the connectors CN921 and CN929 disconnected from the power unit to the extension cable assy however leave the ground lead wire disconnected I Z ill Z CJ J t J CL CL J C ill S o CL m Step 3 Board Fixture and Board Holder Installation Install the board fixture and board holder on the power unit with screws removed at step 1 BOARD FIXTURE 9 4 BVH 2000 U C ...

Page 384: ...the guide rail of the board fixture and fix it with the board holder Step 5 Connect the connectors CNIOI to CNI07 removed step 4 to the proper positions on the FV OI board B V H 2000 U IC PS PM B V H 2180 U C IPS PM BVH 2500 U C P Step 6 Connect the connectors CN92I 922 923 and 929 of the extension cable assy to the corresponding connectors on the FV 0 I boa rd CONNECTION FV Ol CN10l AC 39 CN307 F...

Page 385: ...nit turn the VV 01 hoard 1800 and insert it into the guide rail of the hoard fixture and fix it with the hoard holder 5 Connect the connectors CN102 104 106 201 202 and 203 removed at step 4 to the proper positions on the FY Ol and VV 01 hoards 6 Connect the connectors CN924 and 925 of the extension cable assy to the corresponding connectors on the VV O1 hoard VV 01 CN201 _AC 39 CN307 VV Ol CN202 ...

Page 386: ...to the guide rail of the hoard fixture and with the board holder Step 5 Connect the connectors CN60L 602 and 603 removed at step 4 to the proper positions on the FV 02 hoard BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 6 Connect the connectors CN926 and 927 the exrcnsron assy to the corresponding connectors on the FV 02 hoard FV 02 CN601 AC 39 CN308 F V 2 CN602 FV 01 CN106 FV 02 CN603 FV 1...

Page 387: ...d in a short time Step 6 After performing the operation check and adjustment turn the power off and remove the power cord After passing five minutes or more reinstall the rear panel to the power unit in reverse order of the above steps and install the power unit to the VTR 9 3 AC 39 Board Part Replacement Step 1 Remove four screws securing the AC 39 board one with external tooth washer and a screw...

Page 388: ...of Standard Load for Output Check POWER UNIT 1 Standard for Variable a w o a 0 ...

Page 389: ... a END If a malfunction occurs in one of the switching regulator outputs 19Y 13 8Y 6 8Y and 8 6Y all the outputs will he interrupted hy the PDS function however the PDS will not operate even though a malfunction occurs in the variahle outputs SR YH TR YH DR YH CP YH or DT drive 250V fluorescent display drive 48Y and fan solenoid drive 13Y in the fixed outputs 9 10 BVH 2000 U C PS PM BVH 2180 U C P...

Page 390: ...h Power ON OFF The for rush current limiter has heen mounted on the AC 39 hoard in the power unit Approach the ear to the rear panel of the power unit turn on the switch o RY301 AC 39 BVH 2000 U C PM BVH 2180 U C PM BVH 2500 U C 1 O Power Unit No Load Check Disconnect the connectors CN921 to 928 930 and 931 except to set the power unit to the no load condition Turn on the power switch and check th...

Page 391: ...lector CN302 CD 0 after the power switch NTSC PM ACI00 to l20V PS ACI00 to 120V or AC220 or 240V It on selector setting CN308 G 0 rectified voltage 180 to 380V When the is not outnutted check the fuse F301 on the board If the fuse F301 is broken the check it with a new one and perform Leave the connectors CN305 and CNI02 CN311 and CNI04 CN307 and CNI0l connecting the AC 39 board to FV Ol board and...

Page 392: ...r 170 Vde with the autotransformer IC301 pin 14 LOW level at the transition of the level RV303 AC 39 Set the voltage across C313 AC 39 for 165 Vde with the autotransformer and after 1 minute or more check the circuit protector CB301 AC 39 activates BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 4 High AC Input Voltage Protector Adjustment 9 1 4 Autotransformer Mode of VTR STOP ST A NDBY OFF ...

Page 393: ... w Z o J J Q Q J f a w S o Q 0 CT 36 CD j REF 5V 5 0 3 Vdc CT 36 CD j DEAD CONT voltage 0 8 0 5 Vdc CT 36 j Drive transformer switching waveform j Drive transformer switching waveform 1 5V j Excessive current detection j Excessive current detection Converter Rectified output BOARD TEST POINT Vo CHECKPOINT Hot Cold Hot Cold CT 36 4 FV Ol TPllO 109 FV 01 C141 8 CT 36 1 FV 01 TP108 106 FV Ol CN922 1 ...

Page 394: ...ST POINT Hot Cold VTR LOAD STANDARD LOAD SPECIFICATIONS BVH 2000 U C PS PM BVH 2180 U C PS PM 9 1 4 1 and Adjustment SR VH CT 37 TR VH CT 37 DR VH For the CT 37 hoard whose output system name is not specified in the following the operation check and adjustment are 1 Operation Check voltmeter Oscilloscope of VTR STOP STANDBY TEST POINT Hot Cold 17 5 1 5 Vdc CT 37 1V CT 37 Motor drive control input ...

Page 395: ...1 10 5 CP VH CT 37 l CN924 6 11 1 5 5 Load See section 9 1 4 the 101l0Wln2 table of IS refer to the SPEC 65 2V 65 2V 65 2V 33 2V Load Load See section 9 1 4 Voltmeter STANDBY Mode of Hot Cold FV 03 j FV 03 board power 14 0 5 Vdc FV 03 j Svnchrornzma j Converter transformer drive waveform j Converter transformer drive waveform Q653 J JJ J 14 0 5V When the adjustment of RV651 FV 03 board is the step...

Page 396: ...CN921 8 1 Spec CN921 8 5 Spec hoard BVH 2000 U C PS PM BVH 2500 U C P on ON 100 OFF 5 ...

Page 397: ...f a w o 0 oi 20 VV 01 Check Check that the connectors CN921 to CN929 have been connected to the proper positions on the connector panel of the power unit Set the VTR into the STOP STANDBY OFF mode and check that the reference input voltage of each variable output system is in the range shown below OUTPUT TEST POINT REF INPUT SYSTEM Hot Cold VOLTAGE SR VH CN925 8 7 2 5 0 5V TR VH CN925 6 5 2 5 0 5V...

Page 398: ...with the flowchart of section 9 2 1 PS 14 Board OUTPUT TEST POINT RATEDVOLTAGES SYSTEM Hot Cold 12V 6 TPE5 12 0 to 12 2V 12V TP 8 TPE5 12 0 to 12 2V 12V TPE6 12 2V 12V TP12 TPE6 12 0 to 12 2V 12V TP 1 TPE5 12 2 to 12 0V 12V TP 9 TPE6 12 2 to 12 0V 12V TPI0 TPE6 12 2 to 12 0V 12V TP13 TPE6 12 2 to 12 0V 5V TP 1 TPE2 5 0 to 5 2V 5V TP 4 TPE3 5 0 to 5 2V 5V TP 5 TPE3 5 0 to 5 2V 5V TP 2 TPE2 5 2 to 5...

Page 399: ...nder TP8B 5 00 0 02 Vdc QRV5 PS 14 I Z w Z 9 I 4 I 0 0 J J a w o 0 0 9 3 2 Equipment Digital Voltmeter Mode of VTR STOP Adjustment For Mother board with board No 1 606 708 11 of the BVH 2000 MD 14 pin 3 12 00 0 02 Vdc RV6 PS 14 SR 15 pin 3 12 00 0 02 Vdc RV8 PS 14 AU 27 pin 3 12 00 0 02 Vdc QRVII PS 14 PS 14 TP12 TPE4 12 00 0 02 Vdc RVI2 PS 14 For Mother board with board No other than above of the...

Page 400: ...rd No other than above of the BVH BVH 2180 No The can be measured at the TPs on the extender Extender TP 11B 6 00 0 02 Vde QRV3 PS 14 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 9 3 5 12V Adjustment Equipment Digital Voltmeter of Adjustment For Mother board with board No 1 606 708 11 of the BVH 2000 12 00 QRV7 PS 14 SR 15 pin 4 12 00 0 02 Vdc QRV9 PS 14 AU 27 12 00 0 02 Vdc PS 14 TPI3 TPE...

Page 401: ......

Page 402: ...gnment Tape Waveform 10 6 CTL Head Position Adjustment 10 7 PG Phase Adjustment NO YES 10 9 AudiolCTL RIP Head Adjustment Audio Signal System Adjustment Video System Adjustment DT System Adjustment and t REC Adjustment Note 4 10 1 10 2 Tape Path Adjustment NO 10 5 2 Tracking Adjustment 10 8 Overlap Adjustment Note 1 Note 1 When the moni tor head is adjusted check again the audio CTL R P Note 2 Whe...

Page 403: ... guide Guide post 3 Tape does not curl j Guide post 1 Tape does not curl though the lower edge of the tape touches the guide flange Timer roller Tape curls though the upper edge of the tape touches the flange T tension arm Tape curls little though the lower edge of the tape touches the flange Take up reel touches the reel little 3 If the tape does not run in accordance with the above items adjust ...

Page 404: ...te 2 The entrance and exit slant guide should not be adjusted in this section Note 3 For the VIS erase head audio C TL erase head auido CTL RIP head and audio C TL monitor head the adjustment is not required in this section SLANT GUIDE GUIDE POST 3 IP ROLLER AUDIO CTL ERASE HEAD AUDIO CTL MONITOR HEAD AUDIO CTL R P HEAD GUIDE POST 1 TAKE UP REEL TABLE Note For BVH 2000 00 model the guide 2 is inst...

Page 405: ...and mount the reel washer and cover Note GR CAP GR FLANGE L GR FLANGE U Lower 10 3 2 roller absolutely necessary If any means 1 Loosen the setscrew 2 Adjust the height of the guide roller by turning GR cap as follows CD Adjust guide roller 1 so that the tape touches GR flange U lightly without curl CD Adjust guide roller 2 so that the tape touches GR flange L lightly without curl 3 Tighten the set...

Page 406: ...e height of T tension 1 Check that the screw of flange U is tightened 2 Loosen the setscrew 3 Set the machine the REC mode Adjust the height of the timer roller by turning the flange U so that the tape touches flange U lightly with out curl 4 that the screw of flange U is tightened Note 1 When timer the to pages D 21 D 22 in section manual or VOL 4 for PS After replacement perform the adjustment o...

Page 407: ...e top of the upper flange so that the tape does not curl in REC mode 3 While facing the set screw fastening the upper downward tighten it securely I Z w 2 z CJ J 2 w I f f I I Q w Q l e Timer Roller Slant Adjustment If the height of the tape path along the timer roller varies in each of the REC F FWD or REW mode this adjustment must be _ rI 1 Prepare the spacers Thickness mm Part No 0 02 3 651 334...

Page 408: ...aft Check 1 Put the S arm adjustment weight on the guide shaft of the S tension arm Lift the arm by hand and then take the hand off slowly so that the arm vibrates freely Wait until on 2 board 3 O 03V If adjust R V 1 on TT 01 board 5 Put the adjustment weight again and vibrate the arm freely and wait until the arm stops naturally After the arm was confirm that the at 2 perform step 4 And if RV 1 h...

Page 409: ...ht of Fig 10 8 the weight marked 35 as shown in the 2 Connect the voltmeter to TP 13 on the RL I2 board and turn on the power of VTR 3 Confirm that the indication of the digital voltmeter is OV 0 03V If necessary adjust RV13 on the RL I2 board 4 the with the one marked T240 5 Confirm that the indication of the digital voltmeter is I 4V 0 I5V necessary adjust RV2 on the TT OI board 6 Replace the we...

Page 410: ...ncy but the tape speed is also in proportion to the diameter of the capstan If the capstan is worn out extremely it happens that the tape speed may not correctly E When the servo is not locked in the PLAY mode even if this adjustment has been performed check the pinch roller pressure using sequence established in steps 10 to 14 in Section 3 1 7 then Section 11 Servo For the replacement of the caps...

Page 411: ...de by turning TRACK ING knob 7 Check that the VIDEO and SYNC RF waveform show the specified value in Fig 10 11 1 8 Push TRACKING knob and check that the RF wave form does not vary If the waveform varies the CTL head position adjustment is required 9 By performing the following two steps check the gap between the upper drum and the guide post where is 1 mm apart from the guide flange as shown in Fi...

Page 412: ...e as much of the tracking adjustment as possible by the slant of the slant Be careful that the flange does not press the tape ex cessively when turning the height adiustrnent screw J Each height of the guide post 3 and exit slant guide should be adjusted while checking the RF waveform C To adjust the height and slant use phillips screwdriver for M2 6 If the tracking cannot be correctly owing to th...

Page 413: ...as shown in Fig 10 14 2 find out the side whose RF waveform is similar to a of Fig 10 14 1 b If the waveform is similar to a of Fig 10 14 1 by pushing turn the slant adjustment screw coun terclockwise If the waveform is similar to a by pushing turn the screw clockwise 7 Turn the cap of the taper guide clockwise slowly so that the RF waveform is as flat as possible See b of Fig 10 14 1 8 Fix the ca...

Page 414: ...t the RF waveform is flat If it is not return to step 12 and the slant of the entrance slant guid e again Repeat steps 12 to 15 until the RF waveform becomes as flat as possible and the tape does not curl along the guide flange 16 Finally adjust again by turning the height adjustment screw so that the tape does not curl along the guide flange and the RF waveform is flat 17 Tighten the locking scre...

Page 415: ...e 24 Check that the RF waveform is flat If it is not return to step 22 and adjust the slant again Repeat steps 22 to 24 until the RF waveform becomes as flat as possible and the tape does not curl along the guide flange 25 Finally adjust again by turning the height adjustment screw so that the tape does not curl along the guide flange and the RF waveform is flat 26 Tighten the locking screw of the...

Page 416: ...Y mode and check that the tape forced to run onto the guide flange is restored in the normal tape running If the tape is not restored in the normal tape running check the following 1 Is the tape tension correct Does the press too strongly against the tape 3 Is the slant of the guide correct Note The order of RF waveform adjustment of entrance side RF waveform on the tape 19 31 END BVH 2000 U C PS ...

Page 417: ... that the RF waveform show the value in Fig 10 19 If not perform the tracking adjustment again Tracking adjustment should be performed so that the playback waveform of an alignment tape and self re cording tape satisfies the specified value at the same time I Z w Z 9 J w I f f I I 0 w 0 l e EQ 02 BOARD HEAD SELECTOR RF WAVEFORM TP1 VIDEO MIN LEVEL x 100 85 VIDEO MAX LEVEL Fig 10 19 Self Record Pla...

Page 418: ... Adjustment 4 Remove the head shield cover Loosen the four screws the turn 6 Check that TRACKING knob has been and playback the WHITE segment of the alignment tape 7 Insert the hexagonal screwdriver 2 5 mm to the oppo site side into the hole shown in 10 21 Pushing the head base in the direction of the arrow by hand move the screwdriver right or left so that the RF waveform shows maximum 8 Tighten ...

Page 419: ...tep 7 Set RV8 in the middle of the variable range 8 Adjust RV5 so that the phase difference between VIDEO IN and OUT is within as shown in Fig 10 23 the value is not set and 6 of S3 as follows and adjust RV5 again so that the phase difference is within o When VIDEO OUT is in advance of IN ON 6 When IN is in advance of 9 I Z w Z CJ J w I f f I I 0 1O W 0 l e Set RV 5 in the middle of positions A an...

Page 420: ...O OUT CH 2 is within 1 1 usee the is not following adjustment If the specified value is obtained proceed to step 14 13 Adjust RV 6 on CD 17 board so that the phase differ ence between VIDEO IN CH 1 and VIDEO OUT is 14 Reset 2 of S3 on CD I7 board ON The AUTO PG operates keeping 3 of S3 ON BVH 2000 U C PS PM 80 U C PS PM with VI IN VIDEO OUT Q RV6 CD 17 BOARD Fig 10 24 PG Phase Adjustment in the Pl...

Page 421: ...djusting overlap C on the tape entrance side loosen screw N so that the slant guide assy turns around screw M and adjust the clearance between the guide bracket and upper drum CD The clearance between the guide bracket and upper drum can be adjusted by turning the set screw driven into the taper guide CD When adjusting overlap B on the tape exit side loosen screw so that the exit slant guide assy ...

Page 422: ...referring to Fig 10 27 2 When the of B C is following value and the soecineo value For NTSC PM 21 usee or more For PS 287 usee or more 1 When the overlap B is less than the specified value see 1 a Loosen four marked b While pushing the movable guide assembly light ly to the head drum assembly move it in the direction of the arrow CCW c Tighten four screws marked and check the overlap d After perfo...

Page 423: ...e thickness gauge that the clearance between the guide bracket and upper drum is 0 09 mm or more S Check the overlap again by performing Steps 4 and 5 in Check procedure Repeat Steps 1 to 5 untill the specified value is obtained I Z w Z 9 l w l o I I 0 w 0 I ei When overlap B is out of the specified value 1 Loosen screw P shown in Fig 10 29 1 2 to 1 turn Note Do not loosen screw Q 2 Adjust turning...

Page 424: ...ing the adjustment after replacing the shown in 1 Put the flat plate on both audio CTL erase head and audio C TL RIP head as shown in Fig 10 30 that no space RIP head and the flat plate when the plate is put head hr also check that there is no space between the audio CTL RIP head and the flat plate when the plate is put or the guide post 2 for 00 model without any space is a the by the zenith adju...

Page 425: ...cineu value is obtained The screws should be tightened with a torque of 6 to 8 kg ern 5 Play back the audio 15 kHz segment of the alignment tape and adjust the scope so that the amplitude of AUDIO l and is 6 ern 6 Check that the phase difference between AUDIO I and AUDIO 2 is within 30 degrees See Fig 10 32 the value is not repeat Step 4 again 1 Connect the oscilloscope to AUDIO lOUT and AUDIO 2 O...

Page 426: ...ratio of A to B is the specified value shown in Fig 10 3 If the value is obtained SKEW switch to If the specineu value is not obtained perform the following adjust ment 5 Check that the height adjustment screw is not being loose the turn 7 When the fluctuation adjustment screw is turned clock wise counterclockwise little check whether shown in Repeat the adjustment and check procedures until the s...

Page 427: ...21 and when performing the adjustment after replacing the monitor head follow the flowchart shown in Section 3 24 1 on both audio CTL head and head as shown Fig 10 36 is no space between monitor head the flat plate when the plate is put on the audio CTL R P head without any space and also check that there is no space between the audio CTL monitor head and that plate when the plate is put on the gu...

Page 428: ...turn screw clockwise and then adjust by turning screw A so that the specified phase difference is obtained Repeat the same procedure until both screws are tightened completely and finally check that the specified is obtained The screws should a torque of 6 to 8 kg ern 6 Play back the audio 15 kHz segmen t of the alignment tape and adjust the scope so that the amplitude of the audio I channel and a...

Page 429: ... Play back the audio 15 segmen t of the alignment tape and adjust the scope so that the amplitude A becomes as wide as possible See 10 40 4 Set SKEW switch to MANU and turn knob full and then suppose that the amplitude shown on the scope is Check that the ratio of A to B is within the 1 4 value If the specified value is set SKEW switch to the value is not 1J U JL l the 5 Check that the adjustment ...

Page 430: ... the audio 1 and audio 2 channels 4 Connect the headphones and play back the segment of signal recorded in Step Check that 1 kHz signal is not heard even if MONITOR PHONES level control is set to maximum If the signal adjust as follows Adjustment 5 Loosen the adjustment release screw 1 2 to 1 turn 6 Change the head height by turning the adjust ment screw a little After tightening the adjustment re...

Page 431: ... 3 channels 2 Rewind half of the segment recorded in Step 1 and record a video signal on the video and sync channels in the ASSEMBLE mode 3 Connect the oscilloscope to AUDIO l and AUDIO 3 LINE OUTPUTs 4 back the segment recorded in Steps 1 and 2 check that the waveform does not change at the IN point If the waveform perform the following adjustment 5 Take off erase head assy by removing 6 Change t...

Page 432: ...SC SECAM PAL M TPE1 f TP1 1 S1 I I S2 TP2 I I I S3 I I OP sl S52D 0 to 1 lO S6 1 S9 IV TP3 S7 CB TP4 TP7 TP5 TP60 TPE2 e TP8 TPE3 SV 43 Board BVH 2000 U C PS PM BVH 2180 U C PS PM TP3 TP4 TPE1 TP1 TP2 S1 TPE2 TP14 S2 TP5 ND1 TP6 TP8 rryOOTP11 TP9 TP10 TP12 TP13 TPE4 TPE3 11 1 l Z UJ 2 z 9 J t 2 UJ l o a UJ ...

Page 433: ... RV13 Q E3 RV14dl U RV5 S1 j J TP1 t t RV6 TP2 TP6 TP3 TP4 CD 17 Board PAL SECAM NTSC S8 TPE1 TP3 TP1 8 TP1 TP2 TP4 TP9 TP10 Q RV1 RV9 RV7 RV10 RV4 TP30 QQQ RV6 TP31 f lQ TP11 RV5 RV8 S1 fLJ S2 TP23 TP24 i S3 TPE6 8 OS4 OS5 OS6 S7 TPE4 TP20 TP15 RV11 t TP19 11 2 TP6 TP5 RV2 RV16 TP7 TP8 RV17 TP12 TP13 RV12 TPE3 TP16 I RV13 I TP14 CV1 PS TP17 RV3 TPE2 RV15 t RV14 TPE5 TP21 BVH 2000 U C PS PM BVH 21...

Page 434: ... TP3 TP5 RV3 TP11 TP8 TP7 TP10 TP9 TPE3 RV6 TP24 TPE5 RV7 TP20 TP21 TP22 RV6 00 TP17 RV5 TP1 TP15 TP14 TP13 TP20 TP19 TPE2 TP18 f RV4 TP10 TP9 TP8 TP7 TP6 RV2 RV1 TP5 0 I o RV3 TP4 TP25 TP24 TP3 TP2 TP1 TP23 TT 01 TPE2 RV1 RV2 o Q TP1 BVH 2000 U C PS PM 80 U C IPS PM 11 3 r Z u J 2 z c 9 i 2 u J r ef i o a u J ef ...

Page 435: ......

Page 436: ... 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 11 2 S TENSION SENSOR ADJ USTM ENT Connection See section connection of STOP Setting of Switches Controls SERVO REF Sw INPUT Signal VIDEO IN Step 1 Prepare the Tension Adjustment Tool SONY Part No J 6043 120 A Put the S85 weight on the guide shaft of the S tension arm Hold up the S tension arm by hand and release the hand gently TP12 0 30mVdc lRV12...

Page 437: ...Fix the JB 312 tension adjustment spindle and put the the guide shaft of the T tension arm as shown below Note As for the see section 10 3 2 WEIGHT For BVH 2000 2500 TP13 0 30 mVdc For BVH 2180 TP13 0 14 0 02 Vdc RV13 For BVH 2000 2500 the from T135 to T240 For BVH 2180 Remove the 5 Adiustment For BVH 2000 2500 TP13 RL l2 1 40 0 15Vdc Board For BVH 2180 TPl3 RL 12 1 90 0 01 Vdc Board After the adj...

Page 438: ...ST 2 Step 7 Adjustment 7 Seg LEDs SV 43 Transition from 7F to 80 QRVIO RL 12 After adjustment set TEST 1 2 switches to position 0 respectively BV H 2000 U C IPS PM BVH 2180 U C PS PM 11 7 BVH 2500 U C P 11 6 D A CONVERTER ADJUSTMENT Connection See section connection 9 Mode of VTR STOP Setting of Switches Controls SERVO REF Sw INPUT Step 1 Put 9 full wound tape whose end is stuck by adhesive Do thr...

Page 439: ...CN292 from the Motor at and on the the rsxtenner as shown below CD 17 EXTENDER Board less than 0 3 J sec Connect CN292 to the Connection See section 8 4 connection 4 Mode of ON of Switches Controls Sw Input machine into the adiustrnent set switch and press the mode 00 01 or 02 to 0 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P ...

Page 440: ...00 U C P 1 O ENT Connection See section 8 4 connection 4 Mode of VTR Program Jog 10 30 Times Normal NTSC Program Jog 8 25 Times Normal PS PM SERVO REF Sw INPUT COLOR BARS Remove the Sand T reels a of paper AUDIO CTL PINCH ROLLER MON HEAD GUIDE POST 6 CAPSTAN TAPE SENSOR Step 2 ENTRY switch S7 CD I7 more than 0 5 sec Place the machine into Program Jog 10 30 8 25 for PS PM Step 4 Adjustment CD I7 Bo...

Page 441: ...r 0 0 2 Vde not repeat from step 2 Connection See section 8 4 connection 4 Mode of See steps of Switches Controls SERVO Sw INPUT Sw ON CD 17 Board back the 100 of the aliznment tape For NTSC PAL M TP24 O 2Vp p RV13 For PAL SECAM TP24 O 2Vp p RV13 Place the into the 50 times normal mode TP24 3 After rl 101t Y 3 t normal mode 16 times the into the TP24 A 250 mVp p B 250 mVp p leveles are out of the ...

Page 442: ... O 2Vp p For PAL SECAM TP24 CD 17 Step 2 If it is out of specifications place the machine into the REC adiustment until BVH 2000 U C IPS PM BVH 2180 U C PS PM BVH 2500 U C P 11 14 CONFI CTL LEVEL ADJUSTMENT Connection See section 8 4 connection Mode of REC Setting of Switches Controls TAPE EE Sel TAPE REC INHIBIT Sw OFF IN COLOR Adjustment CD 17 Board FOR NTSC PAL M TP14 For TP14 1 2 O 05Vp p IRV1...

Page 443: ...m the following adjustment 3 Adjustment CD I7 Board PHASE DIFFERENCE BETWEEN VIDEO IN OUT o O 75H RV5 If not set S3 5 and S3 6 as follows and adjust RV5 again S3 5 S3 6 1 OUT is in advance of IN OFF ON 2 If I is not effected ON ON 3 IN is in advance of OUT OFF OFF VIDEO IN O 7 5H OKS3 I I 1 F I VIDEO OUT RV5 3 2 Step 4 Turn RV5 to CW CCW and memorize the positions A and B of the QRV5 when the VIDE...

Page 444: ... 2000 U C PS PM BVH 2180 U C PS PM 1 TAPE ADJUSTMENT Connection See section 8 4 connection 4 Mode of VTR REC Setting of Switches Controls SERVO REF Sw INPUT REC INHIBIT Sw OFF Input Signal VIDEO IN Adjustment CD I Board 825 0 0 3Hz PAL SECAM RV9 1 CLAM ADJ Connection See section 8 4 connection 4 Mode of VTR STOP Auto EE Setting of Switches Controls SERVO REF Sw INPUT TAPE EE TAPE EE Input Signal V...

Page 445: ...ASE LOCKED LOOP ADJUSTMENT Connection See section 8 4 connection 4 Mode of STOP Auto EE Setting of Switches Controls SERVO REF Sw INPUT TAPE EE Sel TAPE EE Input Signal VIDEO IN COLOR BARS Adjustment SR 15 Board TP3 0 1Vdc LV1 11 21 SC PHASE ADJUSTMENT Connection See section 8 4 connection 4 Voltmeter Mode of Auto EE of Switches Controls SERVO REF Sw INPUT TAPE EE Sel TAPE EE SC Sw Sl SR 15 FIX MA...

Page 446: ...RS IC5pin 6 SL 1 0 1 msec RV3 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P S EEL ADJUSTMENT Equipment Oscilloscope 9 Full Wound Tape VTR STOP of Controls SERVO REF Sw INPUT TAPE EE Sel TAPE EE COLOR BARS Load 9 full wound tape whose end is stuck an adhesive tape on the S reel table Do not thread the tape Step 2 Set the TEST 1 switch S4 CD 17 to position 442 Keep on pressing the ENTRY switc...

Page 447: ...RA 05 Board IC5 pin 1 1 35 0 1 msec Connection See section 8 4 connection 4 Load the 9 full wound tape whose end is stuck by an adhesive tape on the T reel table Do not thread the tape Set the TEST 1 switch 3 on the starts rotation until switch T reel stops its rotation and the 7 the data LEDs SV 43 CO C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CC After adjustment remove the 9 full wound tape Set the switch to...

Page 448: ...al VIDEO IN Don t care Applicable Serial No BVH 2000 22501 up BVH 200OPS 12201 20201 Step 1 Open the rear panel remove the IP Driving Moter Assy from VTR but remove CN024 BVH 2180PM BVH 2500 BVH 2500P TP rj 1 TP rj 2 I RT302 Adjustment RL 12 Board TP7 0 50 mV I RV20 BVH 2000 U C IPS PM BVH 2180 U C PS PM BVH 2500 U C P I Z w 2 z o J t o cr w ...

Page 449: ......

Page 450: ... o TPE12 TP15 0 RV24 RV26Q TPE13 RV27 TP16 TPE9 BV H 2000 U C IPS PM 80 U C PS PM RV105 TP106 RV107 RV1040 O TPE106 TP103 e 0 TPE103 RV1060 TP105 TPl RV111 TP108 TPEl RV205 TP206 RV207 09 RV2040 O TPE206 TP203 lQ 0 TPE203 RV206 o TP204 TP205 TP202 TPE205 TPE202 TPE204 RV211 Q TP208 e TP209 TP2 t TPE10 RV2 RV5 TPE11 TP17 e TP8 TP7 TP11 RV18 O TPE4 o RV15 e TPE3 TP10 2 RV13 RVl TPE8 RV17 RV8 o JPl J...

Page 451: ... S4dJ PAL SECAM PAL M NTSC S8 TPE1 TP3 TP6 TP5 RV2 S1 TP18 TP2 RV16 TP4 TP8 RV3 RV1 TP7 TPE2 j S2 RV17 RV7 RV10 RV4 RV15 TP23 TP12 L TP24 RV9 S3 TP11 RV14 TPE6 RV5 RV8 RV11 S4 TP13 RV12 TPE3 S5 TP16 3 S6 TP14 TP19 TP17 TPE5 TP20 TP21 TP15 BVH 2000 U C PS PM BVH 2180 U C PS PM ...

Page 452: ......

Page 453: ...P403 JP307 rPTPE303 TP303 TP302 TPE305 TP305 TPE405 TP5 e TPE4 TPl TP2 OO TP103 e TPEl TP3 RV102 TPE103 0 TPE201 TPE2 RVl RV201 6 JJP207 IR TPE301 TPE203 QI TP20 1 TP2031Y TP301 TP4 TPE202 RV202 TP304 TP8 TPE204 TP205 TPE3 R O TP204 TPE304TP306 e 0 TPE205 TP307 e TPE6 TPE104 TP105 TPE306 TPE307 TP6 TP7 IR TPE 105 TP308 TP404 TPE5 Q TPl 04 TPE308 TPE404 12 4 BVH 2000 U C PS PM BVH 2180 U C PS PM ...

Page 454: ...02 77 46 1 mV oRV7NR 05 AUDIO 3 TP303 TPE303 77 46 1 mV 0RVIINR 05 AUDIO l LINE OUTPUT 0 1 dBm RVI02 LA 02 AUDIO 2 LINE OUTPUT 8 0 1 dBm RV202 LA 02 AUDIO 3 LINE OUTPUT 8 0 1 dBm RV302 LA 02 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 12 2 AUDIO LEVEL METER CALIBRATION See section 8 4 connection of STOP Setting of Switches Controls TAPE EE Sel INPUT A 3 SEL Sl AE 03 LINE Adjustment AUDIO ...

Page 455: ...4 connection 5 Distortion Analyzer Mode of Use auanmcnt tape of Switches Controls Set A 3 for back lOVU at of AUDIO l 2 3 and 2 for lOVUfor 2 of auanment tape 2 dBm for 2 1 5 not repeat steps 3 and not repeat After Controls BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P ...

Page 456: ...tape NTSC PAL M A 4 O 2V o 3 PAL SECAM TP24 3 O 2Vp p ORV13 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 12 6 AUDIO ERASE OSCILLATOR FREQUENCY AND LEVEL ADJUSTMENT Frequency Counter Mode of VTR REC Don t use alignment tape Setting of Switches Controls REC Sw IN Don t care Adjustment BE 02 Board Z w Z o J N If the level is not adjusted turn LV8 BE 02 for maximum level and readjust RV8 3 12 ...

Page 457: ...00V 5 Part No 1 109 573 00 1 109 578 00 3 TPI TPEI BE 02 240 10 RV5 BE 02 12 8 VIDEO VIS Head CTL ERASE FR ENCY CURRE ENT Connection See section 8 4 connection 5 Equipment Frequency Counter Oscilloscope Mode of VTR REC Don t use alignment tape Setting of Switches Controls REC INHIBIT Sw OFF Input Signal AUDIO LINE IN Don t care Place machine in record mode and check the frequency TP2 TPE2 BE 02 11...

Page 458: ...hine still in record mode adjust as follows AUDIO I TP7 TPE3 230 10 Vp p RV2 AUDIO 2 TP8 TPE3 230 10 Vp p Q RV3 AUDIO 3 TP9 TPE3 230 10 Vp p 0 RV4 BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P TP7 TPE3 BE 02 less 10 Vp p L Vl BE 02 Still in playback mode place machine in AUDIO l INSERT mode and check as follows TP8 TPE3 BE 02 less than 10 Vp p If tune 0 4 the TP7 TP8 RVI0 BE 02 meet repeat ...

Page 459: ... LINE INPUT and connect distortion MONITOR OUTPUT selector to switch to LINE and BIAS LEVEL AD controls RVl 2 3 BE 04 to midrange Connect oscilloscope across white lead and GND on the Audio CTL RIP head as shown below and adjust as follows AUD 3 Yellow AUD l Black AUD 2 Red White Maximum Level Maximum Level LV2 BE 03 AUDIO 3 Maximum Level QLV3 BE 03 Oscilloscope For Model Feed 8 dBm at I kHz to AU...

Page 460: ...switch to OFF Using ordinary tape make a recording of 8 dBm at 1 kHz and play back the recording Check AUDIO l 2 3 LINE OUTPUT levels as follows If not measure the levels as against the specifications and proceed to the next step BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P For BVH 2000 2180 PS PM 00 Model Connect distortion analyzer to AUDIO MONITOR OUTPUT and set AUDIO MONITOR selector t...

Page 461: ...djust as follows AUDIO MONITOR OUTPUT 8 0 1 dBm AUDIO I RVI06 AU 27 AUDIO 2 AUDIO 3 12 14 RECORD AMPLIFIER FREQUENCY RESPONSE USTME Connection See section 8 4 connection 5 Equipment Distortion A n lIV7pr Mode of VTR See respective steps Setting of Switches Controls AUDIO l 2 3 REC Cont push AUDIO l 2 3 PB Cont push REC INHIBIT Sw ON e OFF TAPE EE Sel INPUT A 3 SEL Sw Sl AE 03 LINE Signal AUDIO LIN...

Page 462: ......

Page 463: ...ALK ADJUSTMENT Connection See section 8 4 connection 5 Equipment Oscilloscope Mode of VTR REC PLAY INSERT PLAY use alignment tape of Switches Controls REC INHIBIT Sw OFF Input Signal AUDIO LINE IN Adjustment Disconnnect AUDIO 3 LINE INPUT and record a few minutes of no on AUDIO 3 Play back the recording and record over recording with AUDIO 3 INSERT mode Play back the entire and as follows For NTSC...

Page 464: ...03 1 0V f RV12 AE 03 I BVH 2000 U C PS PM BVH 2180 U C PS PM BVH 2500 U C P 12 20 AUD 3 STM PB CTL CROSSTALK Mode of REC Don t use alignment tape Setting of Switches Controls REC INHIBIT Sw OFF Input Signal AUDIO LINE IN no signal 1 kHz 18 dBm Connect LINE and dBm at Play back recording record recording AUDIO 3 INSERT mode then adjust as follows For NTSC PAL M INCORRECT CORRECT Minimum Crosstalk f...

Page 465: ...OFF TAPE EE Sel INPUT TAPE A 3 SEL Sw SI AE 03 LINE IN See rt cr t trl TP steps Step 1 Perform the same procedures in section 12 12 steps 1 and 2 With machine still in playback of alignment tape set AUDIO MONITOR selector to AUDIO l and adjust MONITOR PHONES level control RVINR 05 for 8 dBm at AUDIO MONITOR OUTPUT 3 Set REC INHIBIT switch to OFF Using ordinary tape record 2 dBm at 10 klIz 50 Hz an...

Page 466: ...H 2500 U C P 12 24 TIME CODE OUTPUT LEVEL USTM Connection See section connection Equipment Oscilloscope Distortion Analyzer Mode of VTR STOP Setting of Switches Controls TAPE EE INPUT A 3 SEL Adjustment SetA 3 SEL switch Sl AE 03 to TC and TC INT EXTl EXT2 switch S2 AE 03 to EXT2 Feed 8 dBm at 1 kHz to AUDIO 3 LINE INPUT and connect oscilloscope and 75 ohm termination to TIME CODE OUTPUT AUDIO 3 O...

Page 467: ... Level Controls and turn fully counter clockwise Make a recording of no signal on AUDIO I 2 3 AVO I back the 1 and record over r r rn1 n 0 l lT1 t h INSERT mode then as follows AUDIO 2 LINE OUTPUT Minimum Bias Leak LV202 AU 27 Step 3 AVD 2 to AVO I Bias Leak Adj Play back the recording of step 1 and record over recording with AUDIo 2 INSERT mode then adjust as follows Minimum Bias Leak LVI02 AU 27...

Page 468: ... QRV24 RV28 RVl RV1 RV18 RV23 GRV16 TPE3 RV2 2 RV26 TP10 TP11 JP1 JP2 2 QJ RV30 TP16 TP15 TP19 TPE2 TP13 TP1 TP1S RV7 Q TP1 TP5 GRV17 RV4 TPE6 TP12 TPS G RV37 FOR NTSC PM I I TPAI TPEl 3 J SW2A TP4 TP3 TPE4 RV10 o RV13 Q RV11 G TP7 4 TP2 CV2 TP6 TP9 RV6 0 R 9 RV1 TPE3 Q 0 RV3 RV14 TP11 13 1 I Z ill 2 z CJ 2 ill I Cf o z CJ o o ill o ...

Page 469: ... TPE1 RV2 RV12 I RV1 0 CV4 PS I QQRV11 I RV9 TP6 S1 I URV O TPE4 RV18 RV19 RV17 TP9 JP2 CV1 jqlOl CV2 1 1919 TP3 TPE2 RV4 o TPE3 RV6 I f RV7 OCV3 r TP4 TP8 RV14 RV15 LG 02 A Board PAL NTSC SECAM PAL M TP7 TPE5 TP10 JP3 JP4 13 2 BVH 2000 U C IPS PM BVH 2180 U C PS PM ...

Page 470: ... t LV2 RV2 RV5 RV4 l Z Q TP5 w TP2 TP6 Z TP3 tJ CJ RV6 J VR 05 Board J z CJ j o w o c0 RV2 RV1 VR 07 Board For 04 model VM 01 Board TPE1 TP2 TP1 TP3 RV6Q RV7Q RV8Q RV5 S3 TPE2 Q R BVH 2000 U C PS PM BVH 2180 U C PS PM ...

Page 471: ......

Page 472: ... tor is installed Whe the TC 14A board is not installed set QRVl VM Ol to Connection See section 8 4 connection 3 Waveform Monitor Setting of Switches Controls PICTURE MONITOR Sel TBC CHAR ON OFF S7 TC 14A ON Input Signal TBC MONITOR IN BLACK BURST Adjustment VIDEO 0 57 0 01 V 80 IRE oRV1 VM Ol OUT 13 5 l Z w Z CJ J i w l en en J i Z CJ en o ill o M ...

Page 473: ...1V RV2 VM 01 repeat from step 1 until meet the 13 4 WFM OUTPUT LEVEL ADJUSTMENT Connection See section 8 4 connection 3 Waveform Monitor Mode of Auto Setting of Switches Controls PICTURE MONITOR Sel TBC WAVEFORM MONITOR Sel SELECT VIDEO TAPE EE Sel TAPE EE Input Signal TBC MONITOR IN RAMP LINEARITY WFM OUT 1 00 0 01 V RV4 VM 01 13 5 INPUT VIDEO LEVEL ADJUSTMENT Connection See section 8 4 connectio...

Page 474: ...er of VTR Auto Setting of Switches Controls TAPE EE Sel TAPE EE Input Signal VIDEO IN Any Signal with Burst BVH 2000 U C PM BVH 2180 U C PM BVH 2500 U C ENT 13 8 MODULATOR URST TI NG STM Mode of STOP Setting of Switches Controls TAPE EE Sel TAPE EE Input Signal VIDEO IN Any Signal with Burst z w Z 9 1 r w f f 1 r z 19 f o w o Y Adjustment MD Board TP3 ...

Page 475: ... Burst and chroma should be in phase B 2A ORV7 13 10 DG AND DP ADJUSTMENT Connection See section 8 4 connection 1 or Auto xwrtcnes Controls PICTURE MONITOR Sel DEMOD OUT WAVEFORM MONITOR Sel SELECT VIDEO TAPE EE Se1 TAPE EE Input Signal VIDEO IN RAMP LINEARITY 1 DP Adjustment INCORRECT WFM OUT CORRECT DP less than 0 5 0 RV2 MD Board Step 2 DG Adjustment INCORRECT WFM OUT CORRECT f DG less than 0 5...

Page 476: ......

Page 477: ...ection 8 4 connection and disconnect video input connector Equipment Spectrum via Oscilloscope ModeofVTR RECORD Setting of Switches Controls SERVO REF Sel EXT REC INRI Sw OFF Input Signal VIDEO IN No Signal 111 6 nsec f A RV13 TP6 VIDEO CH Spectrum Analyzer TP6 Minimize 18 MHz Component GRV9 SYNC CH Spectrum Analyzer TP9 Minimize 18 MHz Component GRV17 13 15 VIDEO RF LEVEL METER CALIBRATION Connec...

Page 478: ...ith Burst WFM OUT BVH 2000 U C PS BVH 2180 U C PS BVH 2500 U C MAGNIFY T 13 17 DEMOD AGC ADJUSTMENT STOP SWllcn es U l l l l0 TAPE EE Input Signal VIDEO IN RAMP LINEARITY Adjustment DM 25 Board TP5 13 18 DEMOD OUTPUT LEVELADJUSTENT 1 See section 8 4 connection 1 Input VIDEO IN RAMP LINEARITY Adjustment DM 25 Board Extender r z w Z CJ J w r Cf Cf J z CJ J o w o M ...

Page 479: ...E EE Input IN See section 13 30 4 step 1 Adjustment 3 58 MHz WFM OUT Spectrum Analyzer Measure the center of no ise 0 dB 3 58 MHz than 55 dB QRV4 RV17 DM 25 For the machine with serial No as follows I RV17 is mounted on the DM 25 board BVH 2000 22801 up 10001 BVH 2500 10401 up 13 21 WHITE REFERENCE TIMING ADJUSTMENT section 8 4 connection 1 Waveform Monitor Mode of VTR STOP Auto E E Setting of Swi...

Page 480: ......

Page 481: ...E Sel TAPE EE MULTIBURST RESPONSE LOW BAND Step 1 Set the PICTURE MONITOR Selector to INPUT VIDEO Observe and memorize the of the Multiburst signal as shown below Step 2 Set the Selector to L dV Adjust I RV7 DM 25 for the same wave shape as memorized in step 1 BAND RESPONSE Step 3 Set the PICTURE MONITOR Selector to DEMOD OUT N I 2 LD co LO qq r o r NMMo t t 0 5 to 4 1 MHz Flat tI RV14 DM 25 RV16 ...

Page 482: ... o w o ...

Page 483: ...itor Oscilloscope Mode of Setting of Switches Controls WAVEFORM MONITOR Sel RF ENVELOPE TAPE EE Sel TAPE Input Signal VIDEO IN RAMP LINEARITY Step 1 Set the METER Selector Sl MD 14 to RF V position Place the machine into the REC mode and adjust as follows VIDEO RF Meter Maximum Deflection RV10 MD 14 Step 2 With machine still in mode set the METER Selector S 1 MD 14 to position and adjust as follow...

Page 484: ......

Page 485: ... Freq Response RV2 RIP EO V Control RV4 RIP EO S Control RV6 PLAY EO V Control RV8 PLAY EO S Control Ref Position Setting RV1 RIP DP Control L 1O L V5 DP Adjustment RV3 RIP DG Control LV1 DG Adjustment RV28 Freq Response Adj RV37 CV2 Moire Adj RV5 P LAY DP Control DP Adjustment RV7 PLAY DG Control L V3 DG Adjustment RV18 Freq Response Adj RV36 CV2 Moire Adj RV9 DP Adjustment RV10 LV2 DG Adjustment...

Page 486: ...ltiburst Switches Controls HEAD Sel RIP PICTURE MONITOR Sel TBC OUT WAVEFORM MONITOR Sel SELECT VIDEO Sw BVH 2000 U C 2180 U C Step 1 Set the HEAD Selector to RIP position DP Adjustment Play back of Ramp Linearity INCORRECT INCORRECT WFM OUT Vectorscope EQ CORRECT IDP INCORRECT INCORRECT WFM OUT Vectorscope CORRECT J I Freq Response Adjustment Playback of Multiburst WFM Freq Resp Flat Q After the ...

Page 487: ...3 86 3 Make a connection as follows Select the signal selector on the TSPI to BLACK BURST and observe the waveform monitor Adjust R389 on the SWITCHER board TEK l410 TSP1 and 200n potentiometer until obtaining the proper MOIRE signal as shown below WAVEFORM I MONITOR I l 88 IRE 0200n 841RE OR389 TEK 1410 Record the Signal for several minutes Step 2 MOIRE Check Adjustment Connect the equipments ref...

Page 488: ...the 0P adjustment until meet the specifications Specifications DG less than 3 DP less than 3 FREQ Flat reference r z ill Z o J r Connection See section connection Equipment Waveform Monitor Spectrum Analyzer Mode of VTR REC PLAY Setting of Switches Controls HEAD Sel PLAY PICTURE MONITOR SeI DEMOD OUT MONITOR J r z o f o w o c0 Step 1 of signal Refer to section 13 30 4 step 1 Step 2 MOIRE Check Adj...

Page 489: ...ference to 0 5MHz 13 30 8 PlAY SYNC DG DP and Freq Response Connection See section 8 4 connection 1 Equipment Vectorscope Waveform Monitor Line 14 Mode of VTR PLAY 100 White of Alignment Tape Setting of Switches Controls HEAD Sel PLAY PICTURE MONITOR Sel TBC WAVEFORM MONITOR Sel SELECT VIDEO REC INHI Sw ON AUTO MANU Sw S1 EQ 02 MANU Set the HEAD Selector to PLAY position Step 2 Adjustment DP Adjus...

Page 490: ...form Monitor Line Zl Vectorscope of Switches Controls PICTURE MONITOR Sel TBC WAVEFORM MONITOR Sel SELECT VIDEO REC INHI OFF REC Input signal VIDEO IN RAMP LINEARITY VITS MULTIBURST Press the REC TEST switch S12 SY 79 downward Press the REC button the machine goes into the REC TEST mode and repeates the recording and playback at an interval of 1 Step 2 With machine still in REC TEST mode set the M...

Page 491: ...veral times until meet Connection Equipment See section 8 4 connection 2 Waveform Monitor Line 14 FIELD Line 13 Insert Ramp in 13 Multiburst VlTS in line 14 of TEK 149A Press the REC TEST switch Sl2 SY 79 downward Press the REC button the machine goes into the REC TEST mode repeates the and an of second Step 2 With machine still m REC TEST mode set the METER Selector and as follows VlDEO RF Meter ...

Page 492: ......

Page 493: ...d play back a 50 Flat Field signal Step 2 For NTSC model TP5 EQ 02 0 9 0 04 Vp p QRV34 EQ 02 For PS model 0 4 0 04 Vp p TP10 EQ 02 1 0 0 02 Vdc 10 RV23 EQ 02 3 Set the HEAD SELECT switch to RIP position WFM OUT VIDEO CH 0 35 0 05 Vp p I RV25 EQ 02 Step 4 Set the HEAD SELECT Switch to PLAY position WFM OUT VIDEO CH 0 35 0 05 Vp p RV32 EQ 02 SYNC CH 0 35 0 05 Vp p f RV33 EQ 02 on the EQ 02 board to ...

Page 494: ...80 U C ...

Page 495: ...ill Z 9 J ill I f f J Z 9 f o ill o cv Set the Record a as follows Place the machine into the STOP Auto METER Selector to follows VIDEO RF 100 RV15 MD 14 100 RVI4 MD 14 the is used in combination with the 2000 2180 this adiusrment Connection BVH 2000 2180 TEST SIG GEN INPUT VIDEO 75n as WFM OUT BVH 2000 U C 2180 U C ...

Page 496: ......

Page 497: ......

Page 498: ...14 2 BVH 2000 U C PS PM BVH 2500 U C P 80 U C PS PM w l j j Capstan Ree Servo Check ...

Page 499: ...5 R5 0 DR6 R61 S1 I S2 o z w 2 z 9 J t 2 w J J o i TP7 e TPE4 R96 R139 R87 TP1 TPE1 S3 OQ TP3 OOON R94 gTP2 0 o R52 R138 TP8 e TPE3 S4 OFF DT 05 Board TPE1 eR30 AR50 airP10 tr UR99 0R98 TP4 TP6 R TP9 aJR5 TP5 G R6 061 De R R9 R33 S1 JJ S2 TPi TPE R96 SR139 O TP1 R8 TP2 R94 m R138 R52 TPb TPE2 e 14 2 BVH 2000 U C PS PM BVH 2180 U C PS PM ...

Page 500: ...lel pin 3 12 0 01 Vdc RVl TP5 EQ 02 NG Edge Can nectar Pin 21 B A B R138 w I U U ...

Page 501: ...clockwise until the PB CTL pulse width reaches 5 1 05 times normal as against the 1 time normal speed and in this instant set the REMOTE LOCAL switch to REMOTE position so that the speed can be maintained Adjust R9 in similar manner to step 1 with 1 05 JOG mode 14 7 NG AN ADJUSTMENT DT DRIVE LEVE Connection See section 8 4 connection 1 Equipment Oscilloscope Mode of VTR REC STOP Auto E E Switch Co...

Page 502: ...gnal with Burst Adjustment DT 04 05 Board TP5 BVH 2000 U C PS PM BVH 2180 U C PS PM 14 10 FEED BACK LOOP ADJUSTMENT Connection section connection Equipment Oscilloscope Mode of VTR VAR 1 30 NTSC PM VAR 1 25 PS Switch Control Settings TAPE EE Sel TAPE HEAD Sel PLAY INHI OFF Adjustment DT 04 05 Board TP3 Minimum R94 R96 14 11 WOBBLING LEVEL ADJUSTMENT Connection See section 8 4 connection 1 Equipmen...

Page 503: ...s With manual JOG mode rotate the reel by hand increase the speed to more than 1 in order to disturb the DT operation release hand immediately so as to set machine in still mode and then check that the proper DT playback picture should appear at the time the DT cannot be returned the problem may be caused by the insufficient overlap of the video track 14 12 5 Horizontal Shift Check While playing b...

Page 504: ......

Page 505: ...BVH 2000 U C 3 673 996 22 Volume 1 1985 Printed in Japan 1985 4 09 ...

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