Toshiba W-808 Service Manual Download

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SECTION 3
SERVICING DIAGRAMS

1. INSPECTION PROCEDURES
2. REMOVAL OF THE CABINET
3. LOCATION OF ELECTRICAL UNITS
4. PC BOARD SERVICING PROCEDURE
5. PART CONFIGURATION AND THEIR SYMBOLS

5-1. Precautions For Part Replacent
5-2. Solid Resistor Indication
5-3. Capacitance Indication
5-4. Inductor Indication
5-5. Waveform and Voltage Measurement

6. PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
7. BLOCK DIAGRAMS

7-1. Power Supply Block Diagram
7-2. PIF Block Diagram
7-3. KDB Display Block Diagram
7-4. EDS Block Diagram
7-5. Servo/Logic Block Diagram
7-6. Video Block Diagram
7-7. Hi-Fi Audio Block Diagram

8. CIRCUIT DIAGRAM

8-1. KDB Circuit Diagram
8-2. Main Circuit Diagram

9. PC BOARDS

9-1. Main PC Board (UZ01)
9-2. FCB PC Board (UK02)
9-3. JSB PC Board (UK03)
9-4. KDB PC Board(UK04)

Top

General Descriptions

Adjustment Procedures

Parts List

Top

General Descriptions

Adjustment Procedures

Parts List

Summary of Contents for W-808

Page 1: ... VIDEOCASSETTERECORDER SERVICE MANUAL NC MECHANICAL DECK Jun 2000 Y W 808 General Descriptions Adjustment Procedures Servicing Diagrams Parts List General Descriptions Adjustment Procedures Servicing Diagrams Parts List ...

Page 2: ...s poten tial exists the fault must be located and corrected Repeat the above test with the VCR power plug reversed NEVER RETURN A VCR TO THE CUSTOMER WITHOUT TAKING NECESSARY CORRECTIVE ACTION The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficien...

Page 3: ...SECTION 1 GENERAL DESCRIPTIONS 1 OWNER S MANUAL Top Adjustment Procedures Servicing Diagrams Parts List Top Adjustment Procedures Servicing Diagrams Parts List ...

Page 4: ...Video Cassette Recorder W 808 W 804 OWNER S MANUAL This publication is printed on recycled paper 70971856 PLAY STOP PROG TV POWER EJECT PAUSE STILL REC FF REV ...

Page 5: ...aution Changes or modification made to this equipment not expressly approved by Toshiba Corporation or parties authorized by Toshiba Corporation could void the user s authority to operate the equipment Note to CATV system installer This reminder is provided to call the CATV system installer s attention to Article 820 40 of the NEC that provides guidelines for proper grounding and in particular spe...

Page 6: ... To prevent the VCR from possible damage do not use the unit for at least 2 hours when there is an extreme or sudden change in temperature Copyright It is permissible to record television programs film video tapes and other material only in the event that third party copyrights and other rights are not violated Cassettes marked with S VHS and VHS can be used with this video cassette recorder Howev...

Page 7: ... operation of the product and to protect it from overheating and these openings must not be blocked or covered The openings should never be blocked by placing the product on a bed sofa rug or other similar surface This product should not be placed in a built in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer s instructions have been adhered to 5 He...

Page 8: ...VICE EQUIPMENT GROUNDING CONDUCTORS NEC SECTION 810 21 GROUND CLAMPS POWER SERVICE GROUNDING ELECTRODE SYSTEM NEC ART 250 PART H NEC NATIONAL ELECTRICAL CODE S2898A 10 Outdoor Antenna Grounding If an outside antenna or cable system is connected to the product be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built up static charges Article ...

Page 9: ...e or electric shock Never spill liquid of any kind on the product 15 Accessories Do not place this product on an unstable cart stand tripod bracket or table The product may fall causing serious injury to a child or adult and serious damage to the product Use only with a cart stand tripod bracket or table recommended by the manufacturer or sold with the product Any mounting of the product should fo...

Page 10: ...ning playback Playback 21 Variable Speed Playback 23 Picture Search Still Picture Slow motion Picture Frame Advance Double Speed Playback Jog Dial Operation Shuttle Dial Operation Useful Functions in Tape Operation 25 Counter Function Tape Remaining Time Index Search Function RECORDING Explains recording functions Recording a TV Program 27 Watching a TV program while recording another Recording of...

Page 11: ...STILL 23 LINE IN 2 AUDIO L MONO R jacks LINE IN 2 VIDEO jack 24 CH TRK TV VOL VCR PROG A SELECT REMAIN COUNTER COUNT RESET POWER CH DOWN CH UP DNR TV 2 1 3 5 4 6 8 7 9 0 100 DISPLAY POWER EJECT CANCEL PLAY x2 ENTER STOP SLOW VCR Plus INDEX PAUSE STILL REW FF SP SLP I SELECT TV VCR REC CABLE BOX TIMER VCR SP SLP FF TIMER PLAY x2 100 Number buttons I SELECT A SELECT TV VCR POWER CABLE BOX CH DOWN CA...

Page 12: ...ng indicator REMAIN indicator OFF indicator Hi Fi L R indicators L Left channel R Right channel OFF Normal track VCR Display POWER indicator DT Digital Auto Tracking indicator Channel indicator Tape running direction speed indicator REMAIN VCR SLP L REC TIMER DT CH H M AM PM OFF S R POWER To wall outlet LINE IN 1 VIDEO jack LINE IN 1 AUDIO jacks L R CH selector 3 4 LINE OUT AUDIO jacks L R LINE OU...

Page 13: ...nding on the conditions of use If the remote control does not operate correctly replace all batteries with new ones If the remote control is not to be used for a long period of time remove the batteries to avoid possible damage from battery corrosion Caring for the remote control Do not expose the remote sensor of the VCR to a strong light source such as direct sunlight or illumination especially ...

Page 14: ...Setting the VCR Output Channel When the VCR is connected in this way the VCR sends the output signals to channel 3 or 4 on your TV Set the output channel selector CH selector of the VCR to 3 or 4 whichever is vacant in your area VHF UHF combination antenna VHF antenna only UHF antenna only Antenna splitter not supplied 1 2 Connections Before you use this VCR it is necessary to connect it to your T...

Page 15: ...atch an unscrambled channel while recording it record an unscrambled channel while watching another scrambled or unscrambled You will need to set TV channel to the output channel of the cable box turn on the cable box and select cable channel 3 or 4 according to the output channel of the VCR to record a channel while watching another press TV VCR on the remote control to turn off the VCR indicator...

Page 16: ... of the cable box This set up will enable you to watch an unscrambled or scrambled channel while recording it record an unscrambled channel while watching another unscrambled channel only when you connect a cable compatible TV A B switch A record and watch an unscrambled channel which comes bypassing the cable box A B switch B record and watch a scrambled or unscrambled channel coming through the ...

Page 17: ...ls and clock when power is first connected to the VCR Preparation Turn on the TV and select the video channel 3 or 4 or the video input mode if you made the Audio Video connection page 11 Press I SELECT so that the channel number will appear if L1 or L2 is displayed in the VCR display Press VCR to set the remote control operating the VCR Tuning in progress Auto Set Up completed VCR display Notes I...

Page 18: ...guage selection must be set first when the VCR is first plugged in or after it encounters a power failure You can also easily make necessary settings using the on screen displays Preparation Turn on the TV and select the video channel 3 or 4 or the video input mode if you made the Audio Video connection page 11 Press VCR to set the remote control operating the VCR PROG SET UP E E nGL S I H FRAnÇA ...

Page 19: ...to go back to screen 1 of SET UP page To exit press PROG With DnR On selected see page 21 move down here to obtain a FInE or SOFT playback picture For W 808 only Setting to FInE will give a normal picture with DNR effect Setting to SOFT will give a softer picture Page 28 Page 29 With On set the reception from Antenna is improved with less background noise For W 808 only With On set the reception f...

Page 20: ...l carrying the clock data If AUTO CLOCK SET is unsuccessful set the time and date through the MANU clock set menu selection 10 Press PROG Now the clock starts 11 Press PROG to exit PROG ENTER AM SUMME ME R T I 57 9 1 0 00 SA 1 nE ZO H C T I ME TE DA R A E Y T I ME CLOCK SET E D n AUTO AUTO AUTO AUTO EAS I n TERn 2 SET UP PRESET PROGRAM PROG CLOCK S CH MEMORY CABLE B GU I DE H C OX DSS ET ENTER E D...

Page 21: ...nnels received via the antenna CATV To store channels received via the incoming cable 5 Select AUTO SCAN using PLAY x2 or STOP and press FF to set to ON The VCR starts scanning and the channels are stored in the VCR in ascending order When the scanning is finished the screen automatically returns 6 Press PROG to exit PREPARATION Storing Channels on the VCR This section is required if you receive o...

Page 22: ...r buttons To enter digits of the channel number For one digit number enter 0 before For more than 100 number first press 100 Each number button needs to be pressed within 2 seconds CH TRK To shift up or down the stored channel numbers Channel reference chart Number on the VCR Corresponding channel number TV CATV STD HRC IRC 1 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 1 A 8 2 3 4 5 A 7 6 A 6 7 8 9 10 11 12 1...

Page 23: ...This may result in injury or damage Take special care with children to avoid accidents Precautions when using video cassettes Video cassettes have a safety tab to prevent accidental erasure If the tab has already been removed recording cannot be performed To prevent accidental erasure Remove this safety tab with a screwdriver To record again Cover the tab hole with adhesive tape Avoid exposing cas...

Page 24: ... gives the best possible color Thanks to this circuit color distortion is reduced and a sharp picture is played back Press DNR repeatedly to select the following DnR On Usually set to On The DnR On will appear on the TV screen and you can view the picture with less noise DnR OFF This function will not work Notes The DNR playback is available only in the playback mode Depending on the recorded pict...

Page 25: ... SELECT REMAIN COUNTER COUNT RESET POWER CH DOWN CH UP DNR 2 1 3 5 4 6 8 7 9 0 100 VCR Plus REW FF PLAY x2 STOP ENTER FF STOP REW PLAY x2 S VHS ET Playback 1 Load a cassette recorded in S VHS ET Power is turned on If the cassette has no safety tab playback starts automatically 2 Press PLAY x2 to start playback 3 To stop playback press STOP Rewinding Fast forwarding Press REW or FF in the stop mode...

Page 26: ...ing Still Picture Stability If the still picture is distorted or flickers hold down one of CH TRK until the picture becomes stable Note The distortion of the still picture may not be eliminated completely Slow motion Picture The tape runs at 1 7th or 1 15th the normal playback speed 1 Press SLOW during playback The tape runs at about 1 7th the normal playback speed Each time you press SLOW the spe...

Page 27: ...l is released To stop press STOP The reverse playback mode will be released automatically after about 25 seconds and forward playback will start Noise bar may appear in reverse playback P l a y b a c k d i rection Reverse Initial mode of tape operation Stop Playback Still Normal Picture Fast x7 x1 x1 x1 x1 R e w in d in g Rewinding Rewinding R e v e rs e p la y b a c k P i c t u r e s e a r c h x ...

Page 28: ... view the tape remaining time in the VCR display select the tape length beforehand 1 Turn on the VCR and load a cassette 2 Press PROG to display the MENU screen 3 Select SET UP using FF or REW and press ENTER 4 Select the length of the tape T120 for a T 120 tape or shorter T160 for a T 140 or T 160 tape T180 for a T 180 tape 5 Press PROG to exit 6 Press REMAIN COUNTER The remaining time RT appears...

Page 29: ... INDEX f To search in the forward direction The VCR fast forwards or rewinds the tape When an index signal is found the VCR plays back the tape for about 5 seconds and then resumes fast forwarding or rewinding This is repeated each time at an index signal 3 Press PLAY x2 when the desired program is found Normal playback starts Notes At the very beginning of the tape the index search may not work p...

Page 30: ... sound quality than using the SP tape speed 5 Press REC on the VCR or simultaneously press both REC on the remote control Recording starts 6 Press STOP to stop recording Recording off time setting including S VHS S VHS ET recording By setting the recording off time the recording stops and the VCR is turned off automatically While recording press REC on the VCR repeatedly to set the desired off tim...

Page 31: ...time but with less picture and sound quality than using the SP tape speed 5 Press PROG to display the MENU screen 6 Select SET UP using FF or REW and press ENTER 7 Press STOP repeatedly to go to screen 2 of SET UP page to select S VHS REC and set to ON using REW or FF indicator will appear on VCR display when ON is selected 8 Press REC on the VCR or simultaneously press both REC on the remote cont...

Page 32: ...SP Suitable for general recording with better picture and sound quality SLP Suitable for tripling recording time but with less picture and sound quality than using the SP tape speed 5 Press PROG to display the MENU screen 6 Select SET UP using FF or REW and press ENTER 7 Press STOP repeatedly to go to screen 2 of SET UP page to select S VHS ET and set to ON using REW or FF S ET indicator will appe...

Page 33: ...gram on the channel not a satellite s If your DSS satellite receiver is not remote controllable choose the desired channel 100 to 999 on the DSS satellite receiver To make corrections Press REW to move back to the item or FF to forward Timer Program Recording The programmable timer allows you to record up to 6 different programs over one month Preparation Select the video channel 3 or 4 or video i...

Page 34: ... the end The picture will be distorted when playing the part where the recording tape speed is switched from SP to SLP with the Auto Speed Select feature PROG 25 8 30 SLP E D n On CH DATE OFF D P S PROGRAM SET UP PRESET 8 25 8 26 9 24 WKLYSU MO FR WKLYSA 5 Move to the next using FF and set the recording date using PLAY x2 or STOP The date changes as follows WKLYSU WKLYSA You can record TV programs...

Page 35: ...s Changing cancelling the timer programs 1 If the TIMER indicator is lit press both TIMER to turn it off and then turn the VCR on by pressing POWER 2 With steps 2 to 9 change the items To cancel a program select the program you want to cancel in step 4 and press CANCEL The line is then cleared 3 Press both TIMER to return to the timer standby mode Recording or playback in the timer standby mode Fi...

Page 36: ...blications or the channel guide from cable company If you cannot find the numbers call Gemstar s customer service department at 1 800 4321 VCR Sample of a Guide channel chart from a local TV listing Sample of a Channel line up chart from a cable TV company CHANNEL LINE UP CHART Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Channel 7 Channel 8 Channel 9 ME U 8 WISH 4 WTTV 6 WRTV VCA Local origi...

Page 37: ...ng is now available Example Station Your home channel number on the channel line up chart supplied by cable companies Guide channel number on the TV Guide local TV listings etc HBO 33 7 ESPN 34 AMC 35 the case of CATV mode Preparation Select the video channel 3 or 4 or video input mode on the TV If you record cable channels finish the cable box set up pages 37 40 Prepare the list like below PROG 1...

Page 38: ...ge 17 Load a cassette with a safety tab For cable box users Finish the cable box set up pages 37 40 and turn on the cable box For DSS satellite receiver users This VCR cannot record satellite programs with the VCR Plus C3 system feature To make an unattended recording of satellite programs see Timer Program Recording pages 30 32 Sample of TV program listing in a TV guide magazine PlusCode programm...

Page 39: ...timer standby mode TIMER POWER Recording or playback in the timer standby mode First press both TIMER to release the timer standby mode and then press POWER to turn on the VCR The VCR will be available for use Be sure to press both TIMER again to return the VCR to the timer standby mode after you have finished Error indications If FULL CANCEL PROG message appears on the TV during programming no mo...

Page 40: ...k the sensor window The infrared signals come out of the sensor window and the front of the VCR Then they bounce off walls and other objects in the room and are received by the cable box The VCR sends out infrared signals to your cable box even during timer program recording or VCR Plus C3 system recording Notes If the channels cannot be controlled properly because the infrared signal fails to rea...

Page 41: ...emote control The VCR can change the cable channel to the desired one when timer recording or VCR Plus C3 system recording starts Go to step 7 OFF if your cable box is NON remote controllable Cable channels will be selected by the own channel selector of the cable box The VCR channel should be set to the output channel of the cable box Go to step 8 Preparation Select the video channel 3 or 4 or vi...

Page 42: ...n the timer recording In this case set CONTROL to OFF in step 6 The cable box control is not compatible with the DSS satellite receiver control Buttons to control a remote controllable cable box Once you complete the set up for a remote controllable cable box your cable box can be controlled by the following buttons on the remote control of the VCR POWER CABLE BOX To turn the cable box on or off C...

Page 43: ...0 11 12 13 46 OAK Sigma 10 11 12 13 46 Panasonic 6 8 16 17 Philips 4 13 20 21 22 23 24 25 26 58 62 84 Pioneer 5 6 78 Pulsar 30 42 44 52 63 88 Randtek 13 20 21 22 23 24 25 26 58 62 84 RCA 6 8 16 17 Realistic 44 88 Regal 14 23 41 84 Regency 26 28 Rembrandt 29 32 38 39 42 44 88 Samsung 4 6 32 42 78 Scientific Atlanta 8 9 56 61 Sheritech 27 SL Mark 4 6 32 42 78 Sprucher 6 8 16 17 Stargate 4 6 30 32 42...

Page 44: ...below Do not block the sensor window The infrared signals come out of the sensor window and the front of the VCR Then they bounce off walls and other objects in the room and are received by the DSS satellite receiver The VCR sends out infrared signals to your DSS satellite receiver even during timer program recording Notes If the channels cannot be controlled properly because the infrared signal f...

Page 45: ...using FF or REW ON if your DSS satellite receiver is remote controllable Satellite channels will be selected by CH UP CH DOWN CABLE BOX on the remote control The VCR can change the satellite channel to the desired one when timer recording starts Go to step 7 Preparation Select the video channel 3 or 4 or video input mode on the TV Example PROG O SET CH PUSH 9 0 EYS K T USE OUT UT CH P E D n SET UP...

Page 46: ...he timer recording In this case set CONTROL to OFF in step 6 The VCR Plus C3 system recording is not available on satellite channels The DSS satellite receiver control is not compatible with the cable box control PROG USE OUT UT CH P E D n SET UP PRESET PROGRAM C BOX S S D H C 3 9 9 O n O n n O FF O COnT O R L BRAn T D YPE PROG USE OUT UT CH P E D n SET UP PRESET PROGRAM C BOX S S D H C 3 O n n O ...

Page 47: ... Press DISPLAY Setting of SAP SET on the SET UP screen Type of receiving broadcast Normal sound track Mono L R SAP STEREO ON or OFF not lit not lit MONO MONO MONO ON or OFF not lit lit MONO MIXED ON lit not lit MONO MONO SAP OFF lit not lit MONO MONO MONO ON lit lit MONO MONO SAP OFF lit lit MONO MIXED STEREO STEREO Regular monaural audio Stereo Regular SAP Stereo SAP Sounds in playback You can pl...

Page 48: ...F 2 Press PROG to exit 3 Select the desired channel using CHANNEL on the VCR or CH TRK on the remote control If you use a cable box select a desired channel on the box 4 Select the recording tape speed using SP SLP 5 Press REC to start recording 6 Press STOP to stop recording Broadcast or incoming cable RECORDING To the FM antenna terminal AUDIO OUT AUDIO OUT AUDIO IN LINE IN 1 AUDIO SET UP PROGRA...

Page 49: ...urn on or off TV s screen display ENTER To use for the TV s ENTER key Important Some TVs may not respond to all the operations above or may not be operated at all with this remote control In this case operate your TV with its own remote control Notes For some brands several control codes brand codes are allocated Try each of them until the buttons work on your TV If you replace the remote control ...

Page 50: ...ola 08 MTC 12 NAD 01 11 Nikko 11 Optimus 09 Optonica 08 Panasonic 07 10 15 Penney 01 02 07 11 12 Philco 10 Philips 10 Pioneer 16 Princeclub 12 Prism 07 Proscan 02 Table of Brand Codes Proton 11 Pulser 14 Quasar 07 15 Radio Shack 13 RCA 02 Realistic 09 11 13 Runco NEC 14 Samsung 11 12 Sanyo 09 Scotch 11 Scott 11 Sears 01 02 09 10 11 Sharp 08 13 Sony 03 Soundesign 11 Supreme 03 Sylvania 10 Tandy 08 ...

Page 51: ...cially available cleaning tape The desired sound is not heard such as SAP stereo or regular sound Setting of sounds is not correct Select a desired sound using A SELECT page 44 Noise is present in the Hi Fi sound being played Tracking is not set appropriately Adjust the tracking manually page 21 The timer recording function does not work There is an error in programming Reset the timer recording p...

Page 52: ...ront of the VCR page 10 An obstacle may be in the way of the operation Remove the obstacle The operating mode of the remote control is not set correctly Press VCR or TV depending on the equipment you want to operate pages 14 46 The cassette is ejected immediately after it is loaded The cassette was inserted with the label side not paralleling the compartment Reload it carefully page 20 The cassett...

Page 53: ...160 video cassette is used Fast forward time Within approx 80 s When T 120 video cassette is used High speed rewind time Within approx 54 s when T 120 video cassette is used Video input 1 V p p 75 Ω unbalanced negative sync pin jack Video output 1 V p p 75 Ω unbalanced negative sync pin jack Audio input Line input 308 mV rms more than 47 kΩ pin jack Audio output Line output 308 mV rms less than 4 ...

Page 54: ...oduct as a gift purchased this product This is one way to enable TACP THI to provide you with better customer service and improved products Failure to return the card will not affect your rights under this warranty Your Responsibility The above warranties are subject to the following conditions 1 You must retain your bill of sale or provide other proof of purchase 2 You must notify an Authorized T...

Page 55: ... is authorized to change modify or extend the terms of these warranties in any manner whatsoever The time within action must be commenced to enforce any obligation of TACP THI arising under the warranty or under any statute or law of the United States or any state thereof is hereby limited to ninety 90 days from the date you discover or should have discovered the defect This limitation does not ap...

Page 56: ...ism Check Method 1 5 Mechanical Deck Removing and Mounting Method 1 6 Main Parts Replacement 1 7 Check and Adjustment 1 8 Self Check Function 2 ELECTRICAL ADJUSTMENT 2 1 PIF Circuit 2 2 Servo Circuit 2 3 3D DNR YCS6 Troubleshooting Flow Chart Top General Descriptions Servicing Diagrams Parts List Top General Descriptios Servicing Diagarms Part List ...

Page 57: ...E head S slider Tension lever Band brake S reel table FL arm lever S brake Idle lever assembly T slider ACE head Pinch roller Loading motor No 9 guide lever FL cam gear FL drive slider Center gear assembly T reel table T brake No 8 guide cap 1 MECHANICAL ADJUSTMENT 1 1 Mechanical Parts Location Fig 1 1 1 Top view 1 Fig 1 1 2 Top view 2 ...

Page 58: ...S VHS switch Up down lever Joint gear 1 Joint gear 2 Pinch drive lever Worm gear holder 70909401 ST N5 70909203 ST NF 70909103 70909199 70909228 Alignment tape Back tension cassette gauge Torque cassette gauge KT 300NR Taper nut driver VCR cleaning kit VCR lubrication kit Grease Note Conventional alignment tapes MH 1 70909110 MH 1L 70909111 and ST N1 70909202 may be used partly also instead of ali...

Page 59: ...n post S T slant guide post Impedance Roller No 8 guide post Capstan No 9 guide post No 3 guide post S T guide roller Head assembly cylinder FE head ACE head Pinch roller Capstan motor Loading motor Reel belt Clutch gear assembly Idle lever assembly Band brake Slip ring assembly Note When cleaning use a swab or piece of gauze soaked in alcohol After cleaning load a video cassette with the cleaned ...

Page 60: ... holder without a cassette Does the T reel rotate with the operation above Does the loading motor and the worm wheel rotate without a cassette after turning the power ON Does the FL cam gear rotate approximate 15 degrees clockwise with the operation above and return immediately Does the VCR stop at the playback position after detecting the tape remain with the cassette with a safety tab inserted L...

Page 61: ...tive Parts Replacement When a defective occurs due to the defective part s and the part s is replaced take care the following items 1 Especially as for the mechanical parts requiring the phase alignment take care of the part replacement E g Assembling mode phase alignment mark and etc 2 As for the part s requiring lubricant such as a specified amount of oil or grease apply grease or oil according ...

Page 62: ...ut 2 Check the mechanical position 3 Check the reel belt is removed or not Check mechanical position for the causes 1 2 1 Check capstan motor Check mechanical position for the causes 1 4 1 Check capstan motor 1 Check mechanical position 2 Refer to item 1 4 Mechanism Check Method 3 Check the switch 1 Check capstan motor 1 Check ACE head Check CTL output 1 Check ACE head Check CTL output 2 Perform t...

Page 63: ...e cassette holder so that the start end sensors are not affected by the light Fig 1 4 7 2 Press the channel up down keys on the main unit simultaneously for not less than 5 seconds in succession within 2 seconds after pressing channel up down keys press the rewind key of the remote controller 3 Release both lock levers of the cassette holder to slot in 4 When a cassette goes down the rotation spee...

Page 64: ...anical Deck Removing and Mounting Method Fig 1 5 1 Fig 1 5 2 FFC 4 Power Supply Plug 1 Front panel 5 Claw A Claw A Claw A FFC 4 Top cover 2 Screws 3 Screws 3 Screws 3 Connector A Connector B Screws 1 FFC D FFC C Lug terminal 2 1 5 2 Mechanical Deck Removal 1 Remove the cabinet Refer to section 1 5 1 Cabinet Removal 2 Disconnect the connectors A and B 3 Disconnect the FFC C and FFC D 4 Remove the s...

Page 65: ...e chassis 7 Remove the two screws 5 to detach the rear panel 6 8 Remove the two screws 7 to detach the main PC board 8 with KDB PC board 9 Fig 1 5 3 1 5 3 Mechanical Deck Mounting 1 When mounting the mechanical deck align the marks of the cam switch 1 on the main PC board Fig 1 5 4 2 After mounting the mechanical deck bring it to the state that the cassette holder is just out ...

Page 66: ...slide position of the cassette holder guide grooves A and B Note Turn the worm wheel 3 clockwise if the cassette holder assembly 2 is difficult to slide 3 Remove the FL cassette guide assembly 4 lifting it up while pressing the claw 5 on both sides of the FL cassette guide assembly 4 inside 4 Replace the FL cassette guide assembly with new one 5 Mount it in the reverse order of removal Fig 1 6 3 5...

Page 67: ... FL Drive Slider Joint Gear 2 FL Cam Gear and Joint Gear 1 Replacement 1 Remove the door open lever Refer to item 1 6 1 2 Remove the FL cassette guide assembly Refer to item 1 6 2 3 Remove the cassette holder assembly Refer to item 1 6 3 4 Remove the FL arm lever Refer to item 1 6 4 5 Remove the FL drive slider 1 by sliding it to this side slightly and adjusting the mechanical deck boss 2 portion ...

Page 68: ...r 1 8 mount it so that the cutout portion of the gear is faced with the direction of the FL cam gear 7 Two holes Super V DASH Apply grease to the shaded portion Fig 1 6 10 Joint gear 1 8 Cutout portion FL cam gear 7 Worm wheel 9 Mark Joint gear 1 8 Joint gear 2 6 Cam slider 10 Align marks Align marks Fig 1 6 11 14 When mounting the joint gear 2 6 align the mark of the joint gear 8 with the mark of...

Page 69: ...m gear holder 2 check that the claw 1 is locked properly 1 6 7 Loading Drive Gear Cam Slider S T Loading Lever Assemblies Pinch Drive Lever and Tension Drive Lever Replacement 1 Turn the mechanical deck upside down 2 Remove the reel belt 3 Remove one securing screw on the joint gear bracket and remove the joint gear bracket Refer to item 1 6 5 4 Remove the joint gear 2 Refer to item 1 6 5 5 Releas...

Page 70: ...d perform the adjustment and the confirmation of the back tension Refer to the section 1 7 1 Tension Post Position Check and 1 7 2 2 Reel Torque Check and Back Tension Check Fig 1 6 23 12 When mounting the cam slider 3 loading drive gear 2 and the joint gear 2 8 align the marks of the marking portions Fig 1 6 22 Cam slider 11 When mounting the S T loading lever assembly 4 and 5 align the marks Pin...

Page 71: ...he support post Take care not to dirty bent and damage the felt surface of the band brake 4 8 After mounting confirm the tension post position also confirm the adjustment and back tension Refer to the section 1 7 1 Tension Post Position Check and 1 7 2 2 Reel Torque Check and Back Tension Check 9 After replacing perform the adjustment according to the linearity adjustment of the tape transport sys...

Page 72: ... Assembly and Up Down lever Assembly Replacement 1 When replacing the center gear assembly 1 and Up Down lever assembly 2 remove the S T brake assemblies and idle lever assembly refer to item 1 6 9 and cam slider refer to Fig 1 6 7 in advance 2 Remove the stop ring 3 fixing the holder clutch assembly 4 and remove the holder clutch assembly 4 3 Release two claws 5 of the Up Down lever assembly 2 fr...

Page 73: ... to item 1 6 9 2 Remove the band brake Refer to item 1 6 8 3 Remove the S T reel tables 1 and 2 pulling it from the reel shafts 3 and 4 4 Apply an amount of oil to the top portion and sitting portion of the reel shafts 3 and 4 after cleaning the reel shafts 3 and 4 with the cleaning kit 5 Replace each part with new one 6 Mount it in the reverse order of removal S reel table 1 T reel table 2 Reel s...

Page 74: ...t post and apply an amount of grease to the end of the No 9guide post 10 Also pay attention not to stick the grease on the transportation surface of the No 9 guide lever Confirm the guide post end of the No 9 guide lever 8 touches the top surface of the mechanical deck Insert the other end of the pinch drive spring 7 into the small hole of the mechanical deck a b Flange of the No 9 guide lever Bri...

Page 75: ... with new one Fig 1 6 39 4 When mounting the ACE head assembly 3 to the mechanical deck mount it by aligning the slit A of the mechanical deck with the slit B of the ACE head bracket 4 after aligning the hole 5 of the ACE head bracket 4 to the boss 6 of the mechanical deck Fig 1 6 40 5 Mount the part in the reverse order of removal 6 After mounting perform the adjustment according to the 1 7 3 Tap...

Page 76: ... connector 1 on the cylinder side with its wire holder portion set to the cylinder center side When tightening the slip ring assembly fixing screw 4 be sure to tighten the lug terminal 6 together After mounting the parts confirm no slack on the connector lead wire on the PC board side is found If a slack is found surely wire the connector without slackened 5 After replacing mount the part in the r...

Page 77: ...1 to 5 replace the head assembly cylinder with new one Be sure that driver does not approach to cylinder Screwdriver Cylinder holding plate 5 Screw 3 Head assembly Cylinder 1 6 18 Cylinder Holding Plates Replacement 1 Remove the head cleaner assembly Refer to item 1 6 16 2 Remove three securing screws 1 2 and 3 on the cylinder holding plates 4 5 and 6 Remove the cylinder holding plates 4 5 and 6 b...

Page 78: ... Screw 2 Fig 1 6 47 Notes When remounting the cylinder holding plate 4 after confirming that the FPC 1 is hooked at the groove on the lower head assembly properly insert the FPC 1 under the tip of the cylinder holding plate However this is not applied for the type which has no cylinder window When replacing take much care not to touch the video head directly and damage the cylinder Hook FPC on the...

Page 79: ...ts the imped ance roller to prevent from pulling out So when standing the unit with its top cover removed be sure to remove the impedance roller in advance Do not touch the tape running portion on the roller surface directly by hand and do not attach oil etc on it S impedance roller assembly 1 Apply oil Shaft 2 Fig 1 6 52 Screws 2 Positioning hole of capstan motor assembly Capstan motor assembly 3...

Page 80: ...rque will cause damage to the tape during REVIEW mode 2 REC PLAY take up side Poor torque does not rewind the tape to the end If excessive torque the tape may be stretched by excessive tension 3 Inspection Rewind the torque cassette to the end then check the torque value shown below Review SP x7 14 2 3 9 mN m 145 40 g cm REC PLAY 8 1 2 7 mN m 82 5 27 5 g cm For the checking method refer to the fol...

Page 81: ...e tape is not slackened If slackened operate the VCR in CUE or REVIEW mode and then stop the tape Then make sure the tape is not slackened again 3 After above confirmation proceed to the real torque adjustment and confirmation 4 Caution for removal of torque cassette 1 When removing the torque cassette from the VCR set the VCR to the STOP mode and wait for several seconds Then make sure the tape i...

Page 82: ...ge height of No 8 guide is used as the basic reference for the transport adjustment To keep height of the No 8 guide do not apply excessive force onto the main base to prevent the main base from deformation Pinch roller S guide roller S slant guide T slant guide T guide roller FE head No 3 guide Tension lever tension post REVIEW Released at FF REW mode ACE head No 8 guide ACE head position adjusti...

Page 83: ...al on the alignment tape Trigger scope with switching pulse Adjust tracking control for maxi mum envelope output by pushing tracking up down buttons Playback stereophonic alternative recording signal 300 500Hz on alignment tape Turn the Audio height adjusting screw until audio envelope signal becomes as flat as possible 2 AUDIO HEAD TILT FINE ADJUSTMENT 4 AUDIO HEAD AZIMUTH FINE ADJUSTMENT Playbac...

Page 84: ...ew until tape wrinkle is caused at the lower flange of No 8 guide as shown in Fig 1 7 6 A 3 Turn the ACE tilt adjusting screw counter clockwise until the tape travels along the lower flange as shown in Fig 1 7 6 B Adjustment proce dure From item a From item c From item d Parts replacement Head assembly Cylinder S T sliders assembly ACE head assembly Pinch lever assembly No 9 guide lever Impedance ...

Page 85: ...just T guide roller in up or down direction A B Fig 1 7 8 Adjusting section 6 After completion of the adjustment s push the tracking up down button and make sure video envelope variations are almost flat Next playback the 2 MHz A ch SP mode video signal on the alignment tape and make sure the video RF envelope variations are also flat when tracking up down buttons is pushed NG NG OK Fig 1 7 9 Abno...

Page 86: ... the SLP mode at the tracking center difference between the track ing position of maximum envelope in the SP mode and the tracking center is within 3ms 7 Tighten the ACE head position fixing screw and secure the ACE main base g After Completion ofACE Head FineAdjustment Apply screw lock to two screws tilt azimuth adjusting screws in front of the ACE head 5 No 9 Guide Lever Check 1 Set the VCR to C...

Page 87: ...se difference among each maximum point of AFM envelope A ch and B ch is within 3 ms with the above point used as the basic reference Note If the phase difference exceeds 3 ms replace the head assembly cylinder A B B A 0 55 B 120mV Fig 1 7 12 Envelope output and output difference 3 If the performance does not meet both specifications above 1 and 2 above replace the head assembly cylinder assembly 4...

Page 88: ...e playback Still in reverse playback Reverse slow playback Recording Record pause Power off eject Eject Short FF Short REW Cylinder stop Reel abnormality take up Reel abnormality supply Abnormal slot in slot out Abnormal loading F L driving Loading unloading Reverse rotation with pinch roller ON Playback with pinch roller ON Stop with main brake ON Position detection impossible FF REW Abnormal sys...

Page 89: ... system 3 Frequency counter 7 digits or higher 4 Millivoltmeter 5 Digital voltmeter 6 Tester 20 kΩ V 7 Audio generator 8 Audio attenuator 9 Alignment tapes Part code ST N1 70909202 ST NF 70909203 ST N5 70909401 10 Alignment screw driver jig 11 Color pattern generator 12 Video sweep generator Color bar signal Color bar signals of 75 recorded on the alignment tapes are shown in Fig 2 1 1V p p 0 7V 0...

Page 90: ...ck and adjustment of Video circuit Check and adjustment of Servo circuit Notes 1 This signal is used for tape running adjustment also 2 Set tracking control to center When making linearity adjustment set tracking control to the position where envelope obtains max 1 1 1 2 1 3 1 4 1 5 SP SP SP EP SLP EP SLP 10 min 10 min 9 min 5 min 5 min Item No Mode Time Record Contents Video signal Notes This sig...

Page 91: ...signal is used for tape running adjustment 2 Set tracking control to center position except linearity adjustment 3 When making linearity adjustment S T guide roller set tracking control to the position where envelope obtains max Check and adjustment of Servo circuit Notes 1 This signal is used for tape running adjustment also 2 Set tracking control to center When making linearity adjustment set tr...

Page 92: ...n on the remote control unit 3 The following data will be set in the corresponding address as tabulated 4 Press power button to set the unit to power off mode 5 Pull out the power cord plug from the AC outlet once and insert the power cord plug into the AC outlet again 6 The initialization of default data for MTS IC is now completed The above mentioned procedure will only change the software setti...

Page 93: ... the video out signal 2 2 2 Pseudo V Test point Tracking UP DOWN key Test equipment TV monitor 1 Self recorded tape in SP mode is played and enter STILL mode 2 When tracking UP DOWN key is pressed the center of STILL picture should be adjusted with STILL condition Turn off the VCR When turning off the VCR pseudo V data will be written into EEPROM Note Do not pull out the POWER CORD the data will b...

Page 94: ...cedure 2 Classify the defective symptoms into groups Check the screen on playback according to the operation check procedure 2 3 1 Procedure 3 Check the defects according to the flow chart 3 Operation check procedure Playback Turning DNR off Playback the tape which the color bar signals are recorded Turning DNR on after checking whole murky noises on the color bar Be sure that whole noises are red...

Page 95: ...rm Check color signal waveform Check the main unit Check sine wave signals Check the pulses are generated in almost same intervals Check Video signal waveform Pin 12 of HU01 OK Pin 6 of HU01 OK Pin 14 of HU01 OK Pin 3 and 4 of HU01 OK Pin 8 of HU01 OK Defective 3D DNR YCS6 module HU01 N Y N N N N Y Y Y Y ...

Page 96: ...ck color signal waveform Check the main unit Check sine wave signals Check the pulses are generated in almost same intervals Check Video signal waveform Pin 6 of HU01 OK Pin 14 of HU01 OK Pin 3 and 4 of HU01 OK Pin 8 of HU01 OK Defective 3D DNR YCS6 module HU01 N Y N N Y Y Y N ...

Page 97: ...6 PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM 7 BLOCK DIAGRAMS 7 1 Power Supply Block Diagram 7 2 PIF Block Diagram 7 3 KDB Display Block Diagram 7 4 EDS Block Diagram 7 5 Servo Logic Block Diagram 7 6 Video Block Diagram 7 7 Hi Fi Audio Block Diagram 8 CIRCUIT DIAGRAM 8 1 KDB Circuit Diagram 8 2 Main Circuit Diagram 9 PC BOARDS 9 1 Main PC Board UZ01 9 2 FCB PC Board UK02 9 3 JSB PC Board UK03 9 4...

Page 98: ...io PLAY system Servo system Video PLAY system Audio PLAY system Servo system Table 1 1 1 INSPECTION PROCEDURES Items to be confirmed Clock display Clock setting operation Mode display lamp TV receive condition Channel select operation EE picture and tone quality Signal level Stereo operation Cassette loading operation Eject operation Indicator lamp Abnormal sound Each mode operation Tape drive ope...

Page 99: ...aw A UK02 FCB PC Board UK03 JSB PC Board UK04 KDB PC Board 3 IN 1 Tuner UZ01 Main PC Board H301 VIDEO MODULE UZ01 Main PC Board UK04 KDB PC Board UK02 FCB PC Board UK03 JSB PC Board Fig 4 1 4 PC BOARD SERVICING PRO CEDURE When performing service connect each connection part of the mechanical deck with the main PC board two connectors two flexible flat cables and then turn the unit upside down with...

Page 100: ...ement RF Fusible Table 5 2 1 5 3 Capacitance Indication Symbol Electrolytic Special electrolytic Non polarity electrolytic Ceramic plastic Film Trimmer Unit None F m µF p pF Rated voltage None 50 V For other than 50 V and electrolytic capacitors described in the Circuit Diagram Tolerance 1 Ceramic plastic and film capacitors of which capacitance are more than 10 pF None 5 or more B 0 1 C 0 25 D 0 ...

Page 101: ...olor circuits was conducted with sufficient service color bar signal being received and reproduced in normal conditions Waveforms and voltage values for the remaining circuit were measured with a broadcasting signal normally received so they may vary slightly according to the programs being received Use them as a measure for servicing All voltage values except the waveforms are expressed in DC and...

Page 102: ...N LINE 2 L IN AUDIO GND NC POWER SW DIGITAL GND EJECT SW SY2 L2 SC2 SC2 IN LINE 2 R IN AUDIO GND AUDIO GND LINE 2 R IN LINE 1 IN L LINE 1 IN R LINE 1 IN L LINE 1 IN R CONTROL HEAD AUDIO HEAD AUDIO ERASE HEAD GND GND P201 P202 P203 P204 P205 P502 P702 W503 W701A P102 P801 P101 W501A W301A W301A WK04A P970 P960 W960A P970 W970A JSB UK03 UK02 FCB 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 1 2 3 ...

Page 103: ...CTIFIER SMOOTHING RECTIFIER T802 SMOOTHING RECTIFIER VKK 26V EVER 37V F1 F2 EVER 14V BU 5V EVER 5V 5VS POWER GOOD Q841 9VS RECTIFIER SMOOTHING 7 MB 24V CIRCUIT IC507 5V REG Q831 Q850 9V REG 5V REG Q843 D826 C826 C827 D828 D829 C825 D825 C821 D821 C823 D836 D820 C832 13 SMOOTHING RECTIFIER C833 D838 EVER 11V EVER 9V C835 D839 RECTIFIER SMOOTHING 9 D834 6 6 REG EVER 6 6V Q851 C806 L801 D802 D803 Q80...

Page 104: ...560FP MIX OSC AJ605A 4 5MHz BPF LPF TUNING TUNING RF AMP RF RF AMP AMP AMP DET AMP RF MODULATOR TUNE IF PIF SIF LA7578N 7 INPUT ATTENUATOR DEMODULATION SAP SWITCH STEREO SAP INTERFACE 1 C BUS BLOCK BLOCK DEMODULATION STEREO REDUCTION BLOCK DBX NOISE ABSORPTION OFFSET D A 15 16 MATRIX SELECTOR 26 25 27 CONVENTIONAL AUDIO OUT 3 IN 1 TUNER ICD01 µPC1854AGT MULTIPLEXED TELEVISION SOUND PROCESSING SYST...

Page 105: ...EY PROCESS CK02 22pF AN2 AN4 AN5 AN3 GND EVER 5V Vkk Vkk PLAY STOP CH CH UP REC PAUSE DOWN AN0 AN1 11 13 21 9 12 7 8 19 10 16 18 20 15 EVER 5V Vdd EVER 5 6V SW 5V SK602 WK04 PX04 EVER 5V Vkk F GND F EVER 5 6V RMT OUT FIP RESET SOUT SIN SCLK RMT IN RMT IN SCLK SOUT SIN FIP RESET UZ01 MAIN UK04 KDB REC INHIBIT TO POWER TO FIP DISPLAY DK32 DK31 QK31 LED DRIVER SWITCH QK30 2 1 2 EJECT POWER DK30 EVER ...

Page 106: ...g 7 Seg 8 Seg 9 Seg 10 Seg 11 Seg 14 G1 G2 G3 G4 G5 G6 Seg 12 Seg 13 Seg 15 Seg 16 PLAY STOP EJECT CH DN CH UP PAUSE REC AN1 POWER L Active H Active Unlatch Key Simultaneous Pushing Permitted 43 42 41 40 39 38 37 36 35 34 33 32 31 30 18 19 20 21 22 23 29 28 15 14 13 12 5 SCLK SOUT SIN CS STROBE RESET TO MAIN BOARD WK04 AN0 ...

Page 107: ...4 P15 P16 6G 5G 4G 3G 2G 1G 1d 1e 1c 1g 1f 1b B1 1a B2 B3 2d 2b 2c B4 2e B5 2c 2g 2f 2b 2a 3b 3c 1b 1a 1f 1c 1g 1e 1d 1b 1a 1f 1c 1g 1e 1d 1b 1a 1f 1c 1g 1e 1d 2a 2b 2f 2g 2c 2d 2e 2a 2b 2f 2g 2c 2d 2e col B3 B2 B1 B4 B5 2a 1a 3b 3c 2b 2c col 1a 2a 1a 1f 1e 1b 1c 1g 1d 2a 1a ...

Page 108: ...y RAM MUX Address Latch Display Control Port Serial 14 15 4 6 Stetus Rag Test Rag Row Command Processor CW SLS SFLD LS FLD Line Field Decodes M SYNC 8 7 Buffer VIDEO IN CSYNC Slice Level SIG SYNC COMP DIV CLK DOT CHAR CLK DOT CLK Slicer Data PG Lock 16 Sliced Data SMS FEW Data Bus 13 SEN SCK SDA SDO Row Latch 4 8 13 4 6 10 DEC ADDR 9 5 HSYNC LPF Loop Filter 1 11 Vss Vss A VW VIN Intro SCL 1 SDA 1 ...

Page 109: ...LL TMP93CU76F 1A29 S VHS SW S601 SW Q581 24V 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 12 11 10 9 8 7 6 5 4 3 2 1 13 14 15 VREF AGC DET SHAPE CTL SELECT THRESK SW LOGIC TRAPE REC AMP GAIN CTL EVER 5V EVER 5V EVER 5V 9V ECO MODE GND1 AGC AMP GND2 VCC2 VCC1 VCC1 145k 10k 10k 10k 10k 200k LA7123 IC506 TO KDB TO OSD TO VIDEO AUDIO TO POWER TO KDB 4 3 31 32 38 89 30 90 91 67 66 68 83 84 26 33 5 12 P...

Page 110: ...CH A INPUT VIDEO ENV DET VIDEO ENVELOPE A D INPUT FOR AUTO TRACKING HIFI ENV DET AUDIO ENVELOPE A D INPUT FOR AUTO TRACKING AFT IN AUTO FINE TUNING LOCK DETECTION S IN2 SVHS CABLE 2 REAR DETECT S IN1 SVHS CABLE 1 FRONT DETECT SENSOR CTL TAPE LED ON OFF CONTROL SIGNAL SVHS I O SVHS VHS STATUS I O L VHS H SVHS IIC BUS CLK IIC BUS TRANSFER CLK IIC BUS DATA IIC BUS TRANSFER DATA COMP IN COMPARISON SIG...

Page 111: ...H L REW L L H L M L 4 5 H L L 7 H H FF L L H L PWM M L 4 5 L L L 7 H H STAND BY L L H L L PWM H 2 L L H L H H STOP L L H L L L L 2 L L L H H Un Load ing H L H L L L L L H L H H Load ing L H H L PWM L L L L L L H H OUT SLOT H L H L L L L L L H L H H SLOT L H H L PWM L L L 3 L H L L H H IN 3 L L SP EP R STILL R SLOW SP EP OPEN H L H 3ST H L L L L H L H L L H L H 3ST H L L L H PWM H L L OPEN L L L H ...

Page 112: ...NDEX EJECT EJECT EJECT EJECT EJECT EJECT EJECT EJECT EJECT EJECT EJECT EJECT 5 REC PAUSE PAUSE REC STILL STILL PLAY STILL REC REVIEW REVIEW REVIEW REVIEW REVIEW REVIEW REVIEW 3 4 CUE CUE CUE CUE CUE CUE CUE 2 1 FEEDING FRAME X2 END TAPE MAIN POWER RESET COUNTER INDEX TIMER COUNTER EJECT REC SLOW REW FF PLAY STOP 5 4 3 2 1 OFF OFF POWER OFF POWER OFF POWER OFF POWER OFF POWER OFF POWER OFF POWER OF...

Page 113: ...ER Q313 QL29 BUFFER SWITCH AMP Q317 Q318 GAIN SWITCH BUFFER SWITCH QL26 Q304 BUFFER QL27 Q316 Y IN C IN FSC C SYNC CARR REC SP L SVHS I O ET TAPE ROTARY RF SW REC H ENV DET ENV COMP HASW VA SWP Y OUT C OUT I2C OVER REC COLOR AMP Q310 Q311 VIDEO IN CHROMA IN OSD RESET STB SCL SDA CSYNC IN HD IN VIDEO OUT CHROMA OUT H301 ICL01 COLOR ROTARY RF SW REC H ENV DET ENV COMP HASW VA SWP OVER REC TAPE ET SV...

Page 114: ...ECTOR L SELECTOR R OUTPUT INPUT SELECTOR DECODER I C BUS 45 47 41 43 DECODER I O MEMORY BUS BPF ADJ 2 IC920 TA1246F HIFI PROCESS SDA1 SCL1 HIFI ENV HIFI DET OUT PB HIFI FM REC HIFI FM AUDIO FF TO SERVO LOGIC PRE REC CTL ICV61 TUNER AUDIO L MOD AUDIO TUNER AUDIO R ATT ATT REC EE SIGNAL L REC EE SIGNAL R PLAY EE SIGNAL L PLAY EE SIGNAL R LINE IN 1 L R LINE IN 1 LINE OUT L LINE OUT R TO PIF ATT ATT 3...

Page 115: ...OR INPUT REC SYSTEM 30 20 40 7 75 24 5 77 5 50 2 45 OUTPUT LINE AMP 70 0 25 0 78 60 2 45 50 7 75 40 24 5 30 77 5 20 245 10 775 0 mV rms dB 8 308 REC SYSTEM INPUT 400Hz 308 mV rms INPUT SELECTOR INPUT REC AMP INPUT AMP LINE OUTPUT LINE OUTPUT OUTPUT AMP REC INPUT AUDIO HEAD HEAD OUTPUT AUDIO OUTPUT AMP EQ PLAY SYSTEM ELECTRO MAGNETICS CONVERSION LOSS CONVENTIONAL AUDIO LEVEL CHART EE ...

Page 116: ...1 8K RK22 220 RK02 2 2K RK10 2 2K RK12 220 RK14 470 RK13 330 RK15 820 RK23 330 QK31 2SC2236Y QK30 RN1401 CK30 82p RK44 1 2K RK30 4 7K WK04 ZK01 70113184 CK73 0 047U RK73 3 3 RK27 6 8K RK17 6 8K 5V 5V 5V 5V 5V 5v SK602 70145505 RK575 4 7K 5V QK32 RN1401 DK40 ECO LED RK41 270 5V CK74 0 047U DK31 TLN105B DK32 TLN105B RK07 220 RK08 220 RK06 22O RK39 RK40 5V RK42 RK43 RK03 220 RK04 220 CK05 10nF 5V Mai...

Page 117: ...iv G1 D 8 3 ICK01 Pin 2 V 1V div H 10µs div 8MHz X OUT F 5 4 ICK01 Pin 12 V 2V div H 2ms div SIO STROBE E 7 5 ICK01 Pin 13 V 2V div H 2ms div SIN M D E 7 6 ICK01 Pin 14 V 2V div H 2ms div SOUT D M D 7 7 ICK01 Pin 15 V 2V div H 2ms div SCLK D 7 KDB 8 1 1 Waveform for KDB Circuit Diagram ...

Page 118: ... R358 0R R346 KETSU C349 100n C348 100n C347 100n IC507 KIA7045AP R585 68K JPY07 JP271 17 5 RJ008 0R JP206 15 JP023 20 JP024 15 JP025 7 5 R930 KETSU LX03 CX03 470uF R360 220R C325 0 47µ16V R847 1 2K R848 100K F803 1 5A 125V RF840 1 4W 4R7 RF850 1 2W 1R5 C815 2 2µ200V R815 2M C812 569P R812 100 D850 RL201 R851 1 2W 1R0 RY10 RY11 RJ585 0R QL26 2SA1162Y BUFFER QL30 RN2404 SWITCH QL29 2SA1162Y BUFFER ...

Page 119: ... IC323 MM1226XF 2 IN 1 OUT DRIVER IC324 MM1041XM 6dB AMPRIFIER VIDEO IC Q309 2SA1162Y LPF TC DIGITA IC325 MM1031XM SYNC SEPARATOR Q312 2SA1162Y SEPARATOR 38 40 41 36 Q511 2SA1162Y SWITCH Q510 RN1404 SWITCH MODE VIDEO ICL01 LOCATION PLAY EE PIN 3 16 5 04 2 08 1 82 2 52 2 08 0 0 0 0 52 5 04 2 96 3 76 0 5 04 0 0 8 0 1 9 0 3 16 5 1 84 1 8 2 52 2 06 0 0 0 0 58 5 04 2 96 3 58 0 4 98 0 0 52 0 1 9 0 20 19...

Page 120: ...JP276 20 JP266 12 5 JP301 10 JP267 10 JP302 15 RJ007 0R JP232 12 5 JP228 5 JP253 12 5 L331 0R JP303 20 JP354 20 JP355 20 JP333 10 JP340 JP341 12 5 JP405 12 5 JP311 20 JP273 12 5 RF17 75R JP288 5 JP350 12 5 JP632 JP339 20 JP540 JP586 JP663 JP549 JP255 10 JP637 JP316 7 5 JP332 5 JP326 20 JP320 12 5 JP319 12 5 JP334 5 JP221 5 JP304 7 5 JP280 5 JP342 7 5 JP360 7 5 JP335 5 JP620 JP550 JP618 JP568 JP641...

Page 121: ...6V R005 3K9 R004 3K9 H001 R002 1K R0 1K S001 23344 Q001 R006 4K7 R007 10K JP019 12 5 C006 0 022µ C002 10µ10V D002 KETSU R010 0R C007 KETSU Q841 RF841 R842 C842 JP012 20 JP014 20 JP402 10 R845 62 0R R960 820R RF18 75R RF19 75R JP943 12 5 JP944 12 5 JP341 12 5 JP405 12 5 JP311 20 JP914 7 5 JP915 7 5 JP403 20 JP404 7 5 JP007 20 JP018 15 JP917 20 JP299 20 JP288 5 JP633 JP616 JP315 15 JP329 20 JP348 12...

Page 122: ...3 2 4 2 3 2 4 2 3 2 4 2 5 4 8 3 1 4 8 4 8 5 5 4 8 4 8 4 8 4 8 4 7 4 7 0 0 0 4 8 2 7 2 4 2 3 2 3 2 3 4 4 5 4 5 4 5 9 8 7 6 5 4 3 2 1 IC920 25 30 29 28 27 26 16 15 14 13 12 11 10 22 21 20 19 18 17 23 24 32 31 33 34 35 36 37 38 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5...

Page 123: ...C828 TF0 022 D828 D829 C827 33µ50V D839 RU2YX C835 820µ16V L824 C836 220µ16V 833 W501 70175907 W501A 23902356 R283 100R C280 470p R538 10k R539 10k Q870 R871 D870 R870 JP249 KETSU JP248 KETSU JP306 17 5 JP687 C806 630V 33nF L801 ZBF253D 02 D806 RU1P R801 1 2W 3M3 D810 MTZ16A R811 180K C829 35V 10µ R824 1 8K Q850 2SC3279N C344 1µ C342 1µ R342 1K R343 470K R344 1K5 IC507 KIA7045AP R585 68K JPY07 JP2...

Page 124: ... 7 5 JP234 15 R550 KETSU R551 KETSU R552 KETSU R553 KETSU R554 KETSU R555 4 7K R556 KETSU R557 KETSU R558 KETSU JP263 12 5 JP323 15 JP337 20 JPF05 15 RY03 RY04 RY05 D834 ERA15 02 RY08 RY07 RY06 R357 KETSU R354 1K5 R353 3K3 C346 10n R352 3K3 1µ R350 910R C349 100n C348 100n C347 100n RJ008 0R JP2 15 LX03 CX03 470uF RY10 RY11 VIDEO SWITCH IC326 MM1031XM Q318 2SC2712Y AMP Q317 2SC2712Y AMP 2SC2712Y Q...

Page 125: ...OLD HALLSEN HOLD TAPESEN D841 MTZJ10B RD10ESAB2 C841 22µ16V C969 B0 01µ R841 4 7K Q842 2SC2713GR Q840 2SA1163GR R840 22K RF10 10k RE10 1K Q940 RN2404 R940 1K R941 1K CF05 B0 01 CF02 B0 01 C943 B2200p 732 R741 390R R599 2 2k W301A R567 1k Q841 RF841 R842 C842 JP012 20 JP014 20 R845 JP943 12 5 JP944 12 5 JP914 7 5 JP915 7 5 JP633 JP616 JP315 15 JP329 20 JP348 12 5 JP913 7 5 JP911 12 5 JP350 12 5 JP6...

Page 126: ...4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 5 4 4 4 4 4 4 4 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 9 4 9 4 9 4 9 4 9 4 9 4 9 4 9 4 9 0 5 0 4 0 5 4 5 4 4 4 5 0 9 0 9 0 9 4 5 4 6 4 5 4 5 0 2 4 5 0 4 0 2 0 4 2 2 0 8 2 2 2 1 4 0 2 1 2 1 2 1 1 0 9 0 2 3 0 0 9 9 9 4 6 4 4 4 4 IC502 1 2 0 3 4 5 6 7 8 9 5 7 0 0 14 1 0 14 1 0 14...

Page 127: ...H 10ms div CAP ERR SLP SLOW H 8 20 IC501 Pin 32 V 1V div H 5ms div PV PH STILL K 12 29 P502 Pin 9 V 1V div H 20ms div CAP ERR SP SLOW H 8 21 IC501 a Pin 34 b Pin 35 V 2V div H 5µs div a b SP PLAY a b a b a b K 12 K 12 30 IC506 Pin 24 V 500mV div H 500µs div FGA SHAPE SP PLAY H 7 22 IC501 Pin 43 V 1V div H 10ms div REC CTL OUT REC J 12 J 10 31 IC501 a Pin 70 b Pin 69 V 2V div H 100ms div I 10 I 10 ...

Page 128: ...9 PC BOARDS 9 1 Main PC Board UZ01 1 A 2 3 4 5 6 7 8 9 10 B C D E F G Fig 9 1 1 ...

Page 129: ...9 2 FCB PC Board UK02 1 A 2 3 4 9 3 JSB PC Board UK03 Fig 9 3 1 Fig 9 2 1 B C 1 A 2 3 4 B C CK99 JPK91 JPK92 JPK93 JPK94 JPK95 JPK96 P998 P999 PK98 PK99 SK21 SK22 W970A WK11 DK30 W960A WK31 ...

Page 130: ...9 4 KDB PC Board UK04 1 A 2 3 4 5 6 7 8 9 B Fig 9 4 1 10 ...

Page 131: ...citor Cap 3 3 Resistor Res 4 EXPLODED VIEWS 4 1 Packing Assembly 4 2 Cabinet Assembly 4 3 Chassis Assembly 4 4 Mechanism Assembly 1 4 5 Mechanism Assembly 2 5 PARTS LIST Top General Descriptions Adjustment Procedures Servicing Diagrams Top General Descriptions Adjustment Procedures Servicing Diagrams ...

Page 132: ...f chip type and mounted on original PC boards However when they are placed for servicing works use discrete parts listed on the parts list 3 ABBREVIATIONS 3 1 Integrated Circuit IC 3 2 Capacitor Cap Capacitance Tolerance for Nominal Capacitance more than 10pF P 100 0 Symbol Tolerance B 0 1 C 0 25 D 0 5 F 1 G 2 J 5 K 10 M 20 N 30 V 20 10 W 100 10 U 75 10 Q 30 10 T 50 10 Symbol Tolerance X 40 20 Y 1...

Page 133: ... Y105 Y125 Y127 Y103 Y104 Y107 Y111 Y112 Y113 A701 A702 A703 4 EXPLODED VIEWS 4 1 Packing Assembly Fig 4 1 1 4 2 Cabinet Assembly Fig 4 2 1 A102C A101M A106 A107 A101H A106A UK03 A101D UK02 UF01A A104 A104J ...

Page 134: ...4 3 Chassis Assembly Fig 4 3 1 B001A UZ01 B603B B603C B603 A105 UZ01B UK04 UK01A B601D B601D UK01B HU01 H301 ...

Page 135: ...bly 1 Fig 4 4 1 G051 G050 G532 G530 G540 G538 G610 B256 B254 G056 G052 G536 G534 B239 G510 G480 G663 G666 G555 B474 K546 G527 G520 B460 B462 B456 B458 B473 B468 B500 B484 B488 B464 B478 G661 G428 G420 G450 G458 G104 G001S ...

Page 136: ... 5 Mechanism Assembly 2 Fig 4 5 1 B248 K490 K502 K250 K330 K544 K544 K542 K350 K340 K110 K140 K248 K240 K530 K180 B570 B444 B446 B448 B440 B452 K470 B560 K544 B238 B410 G542 K219 K221 KC02 K224 G546 K200 ...

Page 137: ...1703 Screw 3x6mm B603C 70391973 Screw 3x12mm G001S 70311946 Cylinder Assy G050 70125736 Slip Ring Assy G051 23721310 Screw 3x10mm G052 70372085 Bracket G104 70368260 Coupling G420 70300455 S Slider Assy G450 70322537 T Slide Assy G480 70318793 ACE Head Assy G510 70391936 Screw 2 6x5 6mm G520 70343273 No 9 Guide Lever Assy G527 70356416 Spring G530 70183029 FE Head G532 70391910 Screw 2 6x8mm G534 ...

Page 138: ...mm UZ01B 70391703 Screw 3x6mm W701 70175908 FFC Y101 70971856 Owner s Manual English Y104 70061209 Sheet Extended Service Plan Y112 70148457 Remote Control Unit Y113 70168298 RF Cable Y125 70168273 Pin Cable 3P Y127 70168288 S VHS Cable LOCATION NUMBER PART NUMBER DESCRIPTION ...

Page 139: ... Electrolytic 47MF M 6 3V CK30 24774820 Cap Chip 82pF J 50V CK73 24815473 Cap Chip 0 047MF K 50V CK74 24815473 Cap Chip 0 047MF K 50V RESISTORS RJK01 24000824 Chip Jumper RJK02 24000824 Chip Jumper RK02 24872222 Res Chip 2 2kohm J 1 16W RK03 24872221 Res Chip 220ohm J 1 16W RK05 24872470 Res Chip 47ohm J 1 16W RK06 24366221 Res Carbon 220ohm J 1 6W RK07 24366221 Res Carbon 220ohm J 1 6W RK08 24366...

Page 140: ...hip 2SC2712 Y Q301 A6335470 Transistor Chip 2SC2712 Y Q302 A6335470 Transistor Chip 2SC2712 Y Q303 A6335470 Transistor Chip 2SC2712 Y Q304 A6335470 Transistor Chip 2SC2712 Y Q305 A6541130 Transistor Chip 2SA1162 Y Q306 A6541130 Transistor Chip 2SA1162 Y Q307 A6335470 Transistor Chip 2SC2712 Y Q308 A6541130 Transistor Chip 2SA1162 Y Q309 A6541130 Transistor Chip 2SA1162 Y Q312 A6541130 Transistor C...

Page 141: ...164 Diode D1NL20U D828 23357164 Diode D1NL20U D829 23357164 Diode D1NL20U D830 23316738 Diode Zener MTZJ22B D831 23316668 Diode Zener MTZJ5 1A D832 23115537 Diode 1SS131 D833 23316681 Diode Zener MTZJ7 5B D834 70213235 Diode Schottky AK06 D836 23316463 Diode RK46 D838 23316766 Diode RU2YX D839 23316766 Diode RU2YX D841 23316690 Diode Zener MTZJ10B D843 23316673 Diode Zener MTZJ5 6C D844 23316660 D...

Page 142: ...C348 24092178 Cap Chip 0 1MF K 25V C349 24092178 Cap Chip 0 1MF K 25V C401 24092441 Cap Chip 1MF Z 16V C402 24092178 Cap Chip 0 1MF K 25V C403 24630023 Cap Electrolytic 4 7MF M 16V C404 24092178 Cap Chip 0 1MF K 25V C405 24815682 Cap Chip 6800pF K 50V C406 24814333 Cap Chip 0 033MF Z 50V C407 24092178 Cap Chip 0 1MF K 25V C408 24630030 Cap Electrolytic 0 1MF M 50V C501 24630864 Cap Electrolytic 10...

Page 143: ...01 Cap Electrolytic 100MF M 35V C838 24793220 Cap Electrolytic 22MF M 10V C841 24794220 Cap Electrolytic 22MF M 16V C842 24794220 Cap Electrolytic 22MF M 16V C843 24793220 Cap Electrolytic 22MF M 10V C844 24793220 Cap Electrolytic 22MF M 10V C845 24630860 Cap Electrolytic 22MF M 10V C846 24630860 Cap Electrolytic 22MF M 10V C920 24797478 Cap Electrolytic 0 47MF M 50V C921 24797478 Cap Electrolytic...

Page 144: ...06 24815102 Cap Chip 1000pF K 50V CL07 24815103 Cap Chip 0 01MF K 50V CL09 24781181 Cap Chip 180pF J 50V CL10 24815103 Cap Chip 0 01MF K 50V CL12 24092293 Cap Chip 0 1MF Z 25V CL13 24092442 Cap Chip 0 47MF Z 16V CL14 24815103 Cap Chip 0 01MF K 50V CL15 24794100 Cap Electrolytic 10MF M 16V CL16 24630025 Cap Electrolytic 10MF M 50V CL17 24814103 Cap Chip 0 01MF Z 50V CL18 24774561 Cap Chip 560pF J 5...

Page 145: ...4872223 Res Chip 22kohm J 1 16W R406 24872682 Res Chip 6 8kohm J 1 16W R407 24872103 Res Chip 10kohm J 1 16W R502 24366331 Res Carbon 330ohm J 1 6W R503 24366331 Res Carbon 330ohm J 1 6W R504 24872471 Res Chip 470ohm J 1 16W R505 24872224 Res Chip 220kohm J 1 16W R506 24872104 Res Chip 100kohm J 1 16W R507 24872472 Res Chip 4 7kohm J 1 16W R508 24366332 Res Carbon 3 3kohm J 1 6W R509 24872564 Res ...

Page 146: ...rbon 180kohm J 1 6W R812 24366101 Res Carbon 100ohm J 1 6W R814 24366101 Res Carbon 100ohm J 1 6W R815 24366205 Res Carbon 2Mohm J 1 6W R821 24367362 Res Carbon 3 6kohm G 1 6W R822 24367751 Res Carbon 750ohm G 1 6W R823 24366271 Res Carbon 270ohm J 1 6W R824 24366182 Res Carbon 1 8kohm J 1 6W R826 24322109 Res Metal 1 0ohm J 1W R827 24366681 Res Carbon 680ohm J 1 6W R830 70213230 Thermistor 12BA0R...

Page 147: ...1 16W RL02 24872101 Res Chip 100ohm J 1 16W RL10 24872821 Res Chip 820ohm J 1 16W RL11 24872102 Res Chip 1kohm J 1 16W RL12 24000401 Res Chip 100kohm F 1 16W RL13 24872823 Res Chip 82kohm J 1 16W RL14 24872102 Res Chip 1kohm J 1 16W RL15 24872334 Res Chip 330kohm J 1 16W RL16 24872102 Res Chip 1kohm J 1 16W RL17 24872471 Res Chip 470ohm J 1 16W RL18 24872101 Res Chip 100ohm J 1 16W RL19 24872222 R...

Page 148: ... Line Filter TRF3192 T802 70213264 Power Transformer TPW3453AD W301 70175912 FFC 10P W301A 23902361 Connecter FFC 10P W501 70175913 FFC 5P W501A 23902356 Wire FFC 5P 1 25mm X501 23153409 Crystal 16MHz X502 70153690 Crystal 32 768MHz Z601 70200448 Photo Interrupter GP1S566 Z602 70200448 Photo Interrupter GP1S566 Z661 70125758 Stator Z662 70114368 Hall Sensor HW300B Z662A 70869627 Holder LOCATION NU...

Page 149: ...438BALEXANDRAROADBLOCKB 06 01ALEXANDRATECHNOPARKSINGAPORE119968 ...

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