Sharp VC-A560U Service Manual Download Page 68

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Ref. No.

Part No.

★

Description

Code

Ref. No.

Part No.

★

Description

Code

VC-A560U(A)/A560U/A560U(B)
VC-H960U/H960U(B)/H961U

R756

VRS-CY1JF103J

V 10k

1/16W Metal Oxide

R769

VRS-CY1JF1R0J

V 1

1/16W Metal Oxide

R770

VRS-CY1JF1R0J

V 1

1/16W Metal Oxide

R771

VRS-CY1JF103J

V 10k

1/16W Metal Oxide

R773

VRD-RA2BE103J

V 10k

1/8W

Carbon

R781

VRS-CY1JF103J

V 10k

1/16W Metal Oxide

R782

VRS-CY1JF103J

V 10k

1/16W Metal Oxide

R783

VRD-RA2BE102J

V 1k

1/8W

Carbon

R785

VRD-RA2BE391J

V 390

1/8W

Carbon

R786

VRS-CY1JF473J

V 47k

1/16W Metal Oxide

R789

VRD-RA2BE391J

V 390

1/8W

Carbon

R790

VRS-CY1JF473J

V 47k

1/16W Metal Oxide

R809

VRD-RA2BE101J

V 100

1/8W

Carbon

R811

VRS-CY1JF183J

V 18k

1/16W Metal Oxide

R813

VRS-CY1JF272J

V 2.7k 1/16W Metal Oxide

R814

VRS-CY1JF332J

V 3.3k 1/16W Metal Oxide

R815

VRS-CY1JF472J

V 4.7k 1/16W Metal Oxide

R816

VRD-RA2BE822J

V 8.2k 1/8W

Carbon

R818

VRS-CY1JF000J

V 0

1/16W Metal Oxide

R821

VRS-CY1JF183J

V 18k

1/16W Metal Oxide

R823

VRS-CY1JF272J

V 2.7k 1/16W Metal Oxide

R824

VRS-CY1JF332J

V 3.3k 1/16W Metal Oxide

R825

VRS-CY1JF472J

V 4.7k 1/16W Metal Oxide

R826

VRS-CY1JF822J

V 8.2k 1/16W Metal Oxide

R827

VRD-RA2BE333J

V 33k

1/8W

Carbon

R828

VRD-RA2BE563J

V 56k

1/8W

Carbon

R841

VRD-RA2BE221J

V 220

1/8W

Carbon

R842

VRD-RA2BE221J

V 220

1/8W

Carbon

R843

VRD-RA2BE221J

V 220

1/8W

Carbon

R861

VRD-RA2BE102J

V 1k

1/8W

Carbon

R863

VRD-RA2BE102J

V 1k

1/8W

Carbon

R864

VRD-RA2BE102J

V 1k

1/8W

Carbon

R865

VRD-RA2BE102J

V 1k

1/8W

Carbon

R901

RR-DZ0047CEZZ

V 2.7M 1/2W

Carbon

R904

VRS-VV3DB333J

V 33k

Metal Oxide

R905

VRD-RM2HD154J

V 150k 1/2W

Carbon

R910

VRD-RM2HD390J

V 39

1/2W

Carbon

R912

VRD-RM2HD390J

V 39

1/2W

Carbon

R917

VRD-RA2BE562J

V 5.6k 1/8W

Carbon

R930

VRD-RA2BE332J

V 3.3k 1/8W

Carbon

R931

VRS-CY1JF102J

V 1k

1/16W Metal Oxide

R932

VRD-RA2BE101J

V 100

1/8W

Carbon

R933

VRS-CY1JF102J

V 1k

1/16W Metal Oxide

R934

VRS-CY1JF102J

V 1k

1/16W Metal Oxide

R935

VRS-CY1JF102J

V 1k

1/16W Metal Oxide

R936

VRD-RA2BE102J

V 1k

1/8W

Carbon

R938

VRS-CY1JF000J

V 0

1/16W Metal Oxide

R961

VRD-RA2BE561J

V 560

1/8W

Carbon

R963

VRD-RA2EE151J

V 150

1/4W

Carbon

(VC-A560U/A560U(A)/
A560U(B))

R963

VRD-RM2HD820J

V 82

1/2W

Carbon

(VC-H960U/H960U(B)/
H961U)

R968

VRS-CY1JF103J

V 10k

1/16W Metal Oxide

R969

VRD-RA2EE102J

V 1k

1/4W

Carbon

R970

VRS-CY1JF472J

V 4.7k 1/16W Metal Oxide

R974

VRD-RM2HD152J

V 1.5k 1/2W

Carbon

R7781

VRS-CY1JF222J

V 2.2k 1/16W Metal Oxide

R7782

VRS-CY1JF821J

V 820

1/16W Metal Oxide

R7783

VRS-CY1JF470J

V 47

1/16W Metal Oxide

R7784

VRS-CY1JF684J

V 680k 1/16W Metal Oxide

R7785

VRS-C F125J

V 1.2M 1/16W Metal Oxide

SWITCHES

S701

QSW-F0042AJZZ

V Switch, Rec Tip SW

(VC-A560U/A560U(B)/
H960U/H960U(B)/H961U)

S704

QSW-RA001WJZZ V Switch

S801

QSW-K0004AJZZ

V Switch, Power

S802

QSW-K0004AJZZ

V Switch, Eject

S803

QSW-K0004AJZZ

V Switch, Menu

S804

QSW-K0004AJZZ

V Switch, CH-

S805

QSW-K0004AJZZ

V Switch, Set

S806

QSW-K0004AJZZ

V Switch, CH+

S807

QSW-K0004AJZZ

V Switch, Pause

S808

QSW-K0004AJZZ

V Switch, Rec(360)

MISCELLANEOUS PARTS

ACC901 QACCDA005WJZZ V AC Cord

F901

QFS-B3025CEZZ

V Fuse, 3.0A/125V

FH901

QFSHD1017CEZZ

V Fuse Holder

FH902

QFSHD1018CEZZ

V Fuse Holder

J201

QJAKH0011AJZZ

V Jack, Rear AV Jack

(VC-A560U/A560U(A)/
A560U(B))

J201

QJAKL0024AJZZ

V Jack, Rear AV Jack

(VC-H960U/H960U(B)/
H961U)

J202

QJAKG0006AJZZ

V Front AV Jack(VC-H961U) AH

P701

QPLGZ1283GEZZ

J Plug, 12Pin

P809

QPLGN0459REZZ

V Plug, 4Pin

RMC801 RRMCU0086GEZZ J Remote Receiver

SC301

QSOCNA006WJZZ V Socket, 9Pin

SC601

QSOCN0611REN1 V Socket, 6Pin

SC602

QSOCZ0293GEZZ

J Socket, 2Pin

TP201

QPLGN0447REZZ

V Plug, 4Pin

W851

LHLDZ2185AJ00

V Holder

W852

LHLDZ2185AJ00

V Holder

DUNTKB105TEVZ(VC-H961U)
DUNTKB105TEW1(VC-A560U(A))
OPERATION UNIT

RESISTORS

R881

VRS-CY1JF103J

V 10k

1/16W Metal Oxide

R882

VRS-CY1JF103J

V 10k

1/16W Metal Oxide

R883

VRS-CY1JF223J

V 22k

1/16W Metal Oxide

SWITCHES

S881

QSW-K0004AJZZ

V Switch, PLAY

S882

QSW-K0004AJZZ

V Switch, STOP

S884

QSW-K0004AJZZ

V Switch, REW(360)

S886

QSW-K0004AJZZ

V Switch, FF(360)

MISCELLANEOUS PART

SC881

QSOCZ0450CEZZ V Socket, 4Pin

Summary of Contents for VC-A560U

Page 1: ... VC H961U CONTENTS Page 1 GENERAL INFORMATION 5 2 DISASSEMBLY AND REASSEMBLY 7 3 FUNCTION OF MAJOR MECHANICAL PARTS 10 4 ADJUSTMENT REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS 12 5 ELECTRICAL ADJUSTMENT 30 6 MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE 32 7 TROUBLESHOOTING 38 8 BLOCK DIAGRAM 50 9 SCHEMATIC DIAGRAM AND PWB FOIL PATTERN 58 10 REPLACEMENT PARTS LIST 71 11 EXPLODED VIEW OF...

Page 2: ...uch as non metallic control knobs insulation materials cabinet backs adjustment and compartment covers or shields isola tion resistor capacitor networks mechanical insula tors etc 3 To be sure that no shock hazard exists check for current in the following manner Plug the AC line cord directly into a 120 volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a...

Page 3: ...s du coffret les couvercles de compartiment et ajustement ou les boucliers les réseaux de résistance condensateur d isolement Ies isolateurs mécaniques etc 3 Pour être sûr qu il n y a aucun risque de choc électrique vérifier le courant de fuite de la maniére suivante Brancher le cordon d alimentation secteur directement dans une prise de courant de 120 volts Ne pas utiliser de transformateur d iso...

Page 4: ...ement of part with the mechanism and its PWB in position in the main frame 1 Start and end sensors Q701 and Q702 Insert the sensor s projection deep into the upper hole of the holder Referring to the PWB fix the sensors tight enough 2 Photocoupler IC901 Refer to the symbol on the PWB and the anode marking of the part 3 Cam switches A and B S704 QSW RA001WJZZ Adjust the notch of the part to the whi...

Page 5: ... and Playback with T 160 cassette 1 2 SPECIFICATIONS Format VHS NTSC Standard Video Recording System Rotary Two Head Helical Scan System Number of Video Heads 4 Video Signal Standard NTSC Color System Audio Recording System 1 Stationary Head for Linear Audio 2 Rotary Heads for Hi Fi stereo Only for Hi Fi models Tape Width 12 7 mm 1 2 inch Tape Speed SP 33 35 mm sec 1 31 i p s LP 16 67 mm sec 0 66 ...

Page 6: ...er recording Simple Recording Timer and Recording with the Timer 3 VCR LED indicator This indicator lights up when selecting VCR by using the TV VCR button 4 REC LED indicator This indicator lights up on during recording This indicator flashes during REC Pause 5 Remote Sensor Point Remote Control at this window Cassette compartment see Playback Recording POWER button When pressed to turn on the VC...

Page 7: ...crew 6 2 screws 7 MAIN PWB Remove 1 screw 8 with antenna terminal cover Remove 1 screw 9 with top cabinet fix angle ANTENNA TERMINAL COVER MAIN FRAME TOP CABINET TOP CABINET FIX ANGLE OPERATION PWB LED HOLDER MECHANISM MAIN PWB ASSEMBLY ANTENNA TERMINAL COVER FRONT AV JACK 8 8 1 C 2 6 2 6 6 9 4 B B B B A A A B A 7 7 C A VC A560U A VC A560U VC A560U B VC A560U A VC A560U VC A560U B VC H960U VC H960...

Page 8: ...enna cover 1 screw 1 and remove the antenna terminal cover Remove the screw 2 which connecting the PWB and the mechanism Take out vertically the mechanism so that it does not damage the adjacent parts 2 Removing the mechanism and cassette housing Remove 2 screws 3 fixing the cassette housing to the mechanism and remove the cassette housing 3 CASSETTE HOUSING MAIN PWB VC H961U 1 2 ...

Page 9: ...chanical initial setting After ascertaining the return to the initial set position install the cassette housing in the specified position This method is applied only for the mechanism INSTALLING THE MECHANISM ON PWB Lower vertically the mechanism paying attention to the mechanism edge and install the mechanism with due care so that the parts are not damaged So as to fix the mecha nism to the main ...

Page 10: ...Tension arm 4 Idler wheel ass y 5 Open guide 6 Supply reel disk 7 Supply main brake 8 Take up main brake 9 Pinch drive cam 10 A C head ass y 11 Reverse guide lever ass y 12 Reel relay gear 13 Take up reel disk 14 Pinch roller lever ass y 15 Drum ass y 16 Loading motor block 17 Drum driver motor 18 Take up pole base ass y 17 15 11 5 9 14 12 8 16 13 4 6 2 7 3 1 18 10 ...

Page 11: ... VC H960U H960U B H961U FUNCTION OF MAJOR MECHANICAL PARTS BOTTOM VIEW No Function No Function 19 Syncro Gear 20 Master cam 21 Capstan D D motor 22 Reel belt 23 Clutch lever 24 Limiter pulley ass y 25 Shifter 25 24 21 22 19 20 23 ...

Page 12: ...que Gauge Head JiGTH0006 AW JiGRH0002 BR JiGSG2000 BS JiGSG0300 BF 7 JiGADP003 BK Tension Gauge These Jigs are used for checking and adjusting the reel disk height When fixing any part to the threaded hole using resin with screw use the jig Specified torque 5 kg This cassette torque meter is used for check ing and adjusting the torque of take up for measuring tape back tension These Jigs are used ...

Page 13: ...ally blocked Abnormal rotation or significant vibration requires replacement Clean tape contact part with the specified cleaning liquid Clean tape contact area with the specified cleaning liquid Clean rubber and rubber contact area with the specified cleaning liquid Screen swaying Cassette not loaded or unloaded No tape running tape slack Tape slack Video head cleaning procedure 1 Apply one drop o...

Page 14: ...WITHOUT THE CASSETTE HOUSING CONTROL ASSEMBLY 1 Remove the full surface panel 2 Short circuit between TP803 and TP802 3 Plug in the power cord 4 Turn off the power switch The pole bases move into U L position 5 Open the lid of a cassette tape by hand 6 Hold the lid with two pieces of vinyl tape 7 Set the cassette tape in the mechanism chassis 8 Stabilize the cassette tape with a weight 500g to pre...

Page 15: ...ake care so that grease does not adhere the brake surface 2 After reassembly check the video search rewind back tension see 4 10 and check the brake torque see 4 14 Height checking and adjustment Note 1 Set the master plane with due care so that it does not contact the drum 2 When putting the master plane shift the reverse guide a little in the loading direction Care must be taken since excessive ...

Page 16: ...ol assembly After short circuiting between TP803 and TP802 provided at operation PWB plug in the power cord Setting 1 Set a torque gauge to zero on the scale Place it on the take up reel disk 2 Press the FF button 3 To calculate the remaining capacity of the play back mode slowly rotate the supply reel disk and then shift it into the forward mode Checking 1 Turn the torque gauge slowly one rotatio...

Page 17: ... it counterclockwise very slowly one rotation every 1 to 2 seconds and check that the torque is within the set value change to 14 1 3 5mN m 144 35gf cm Set value EP change to 6 9 mN m 70 gf cm Figure 4 8 Checking 1 Make sure that value is within the setting 6 9 mN m 70 gf cm 2 The winding up torque fluctuates due to variation of rotation torque of limiter pulley ass y Read the center value of fluc...

Page 18: ...4 10 CHECKING THE VIDEO SEARCH REWIND BACK TENSION Remove the cassette housing control assembly After short circuiting between TP803 and TP802 provided at operation PWB plug in the power cord Checking 1 After pressing the play button press the rewind button and set the video search rewind mode 2 Place the torque gauge on the take up reel disk and turn it counterclockwise very slowly one rotation e...

Page 19: ...e cassette housing control assembly After short circuiting between TP803 and TP802 provided at operation PWB plug in the power cord Setting 1 Turn off the power switch 2 Open the torque cassette meter and fix with tape 3 Set the cassette tape in loading state 4 Put the weight 500g on the cassette torque meter 5 Turn on the power switch Make the adjustment with the beginning of a T 120 tape Figure ...

Page 20: ...ment of the brake torque at the supply side and the take up side Unless the supply side brake torque or take up side brake torque is within the setting clean the felt surface of reel disk supply take up brake lever check again the brake torque If value cannot be set within the setting yet replace the main brake ass y or main brake spring Figure 4 18 4 14 CHECKING THE BRAKE TORQUE Checking the brak...

Page 21: ...ew 2 Unsolder the PWB fitted to the A C head Notes 1 When replacing never touch the head If you touched clean with the cleaning liquid 2 When removing the screw 3 take care so that the spring may out Figure 4 23 Note 1 If the screw 1 is tighten tentatively too loose the azimuth and height of A C head may change when they are finally tightened Therefore care must be taken 2 After completion of A C ...

Page 22: ... side guide roller so that the envelope waveform changes nearly parallel For ATR signal adjustment procedure refer to Figure 4 30 9 Turn the tilt screw to remove the tape crease at the fixing guide flange Playback the tape and check for tape crease at the fixing guide flange 1 If there is no tape crease Turn the tilt screw clockwise so that tape crease appears once at the flange and then return th...

Page 23: ... audio output 5 The adjustment of 3 and 4 twice or three times repeat and finally adjust 4 Figure 4 27 For X value adjustment Adjust the X value turning the gear type screwdriver Figure 4 28 3 Tape run adjustment 1 Connect the oscilloscope to PB ATR signal output test point set oscilloscope sync to EXT trigger input the PB CHROMA signal head switching pulse 2 Rough adjustment of X value Tentativel...

Page 24: ...e self picture recorded tape and check the flatness of ATR signal waveform and sound Notes When the A C head X value adjustment is performed be sure to perform at first X value rough adjustment refer to 4 17 3 2 PB ATR Signal Head switching pulse Figure 4 29 4 A C head X value adjustment 1 Fix A C head arm screws 1 by the method described in 4 15 Replacement 3 2 Playback the alignment tape VROATSV...

Page 25: ... or D D rotor ass y 5 After installation adjust the playback switching point for adjustment of servo circuit 4 18 REPLACEMENT OF THE CAPSTAN D D DIRECT DRIVE MOTOR Remove the mechanism from the main PWB refer to 2 2 item 1 When removing the mechanism from the main PWB Removal Follow the order of indicated numbers 1 Remove the reel belt 1 2 Remove the slow brake lever 2 3 Remove the three screws 3 ...

Page 26: ...4 19 D D motor replace ment 2 Remove the drum earth brush ass y 2 3 Remove the upper and lower drum assembly from main chassis 1 4 Remove the drum FFC holder 3 Cares when replacing the drum 1 Be careful so that the drum earth brush is not lost 2 Do not touch directly the drum surface 3 Fit gently the screwdriver to the screws 4 Since the drum assembly is an extremely precise as sembly it must be h...

Page 27: ... as shown below 2 Fix the shifter position setting part to the roading arm T position setting part as shown in figure 3 Make sure tension arm not run on the shifter as shown in figure a b c Loading arm T Shifter Insert point Loading arm T Loading arm S Phase matting Not run on the sifter Sifter Tension arm Drum Limiter pully Capstan D D motor Bottom side of mechanism chassis ...

Page 28: ...loading motor and install the replacement loading motor as shown below Figure 4 40 Figure 4 38 2 The loading motor pressing in must be less than 14 7 N 1 500 gf Adjust the distance between motor and pulley to 6 95 mm Figure 4 38 1 Figure 4 39 0 2 0 15 E ring Line of synchro gear Phase matching Phase matching Hole of Pinch drive cam Synchro gear Master cam 6 95 mm A part Worm gear 0 0 15 Loading mo...

Page 29: ... Frame L Drive Arm R Drive Arm L Upper Plate 4 25 ASSEMBLY OF CASSETTE HOUSING 1 Proof lever Proof lever spring and Holder R Figure 4 41 MSPRD0215AJFJ Proof lever spring fixing direction designated LANGF9661AJFW Top surface should be free from scratches or soil ...

Page 30: ... parts such as video heads Check that the mechanism and all electric components are in good working condition prior to the adjustments otherwise adjustments cannot be completed Instruments required Color TV monitor Dual trace oscilloscope Audio signal generator AC milli voltmeter Blank video cassette tape Alignment tape VROEFZHS Screwdriver for adjustment Color bar generator RF signal generator TP...

Page 31: ...nd make sure that the leading edge of the head switching pulse is 6 0H lines ahead of the vertical sync as shown in Figure 5 2 6 If the setting is out of this range readjust the data using the channel select and buttons of the set or the remote controller 7 Finally press the STOP button to quit the test mode Figure 5 2 6 0 0 5H lines CH 1 HEAD SWITCHING PULSE CH 2 VIDEO OUT CH 1 1V dev 50µsec dev ...

Page 32: ...Loading motor turns in reverse direction and master cam counterclockwise CASSETTE INSERTION STOP Cassette inserting Full loading YES YES YES NO NO NO Unloading Loading motor starts in normal direction and master cam counter clockwise Does mechanism position sw come off within 2 5 sec Are start end sensors at low level before cassette insertion Insert cassette Double action rack slides Drum motor s...

Page 33: ...ng motor stops End Stop capstan motor NO YES Press STILL key Pinch roller releasing Idler swinging Pinch roller pressing Loading motor turns clockwise and master cam counterclockwise Turn capstan motor in reverse direction Turn loading motor counterclockwise Cam switch is at VSR position Set capstan motor to search speed Is take up reel sensor signal outputted Press REW key Release pinch roller Ca...

Page 34: ...stan motor Loading motor stops End Loading motor turns in clockwise and master cam counterclockwise 4 supply reel pulses outputted Does the take up reel pulse output two edges Capstan motor turns clockwise Loading motor turns clockwise Cam switch is at Eject position Loading motor stops Capstan motor stops Press EJECT key Tape unloading Cassette eject End Capstan motor turns clockwise Capstan moto...

Page 35: ...ge supply system in trouble Does capstan motor turn in FF or REW direction Are idler wheel ass y and reel disk in mesh Is the pulse outputted from reel sensor The cassette tape is presumably damaged 2 REC PLAY FAILURE MODE RELEASE NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES Is the master cam at PB position Does loading motor operate Modes changing smoothly through cam switch Loading motor...

Page 36: ...nd supply reel disk in mesh Is supply reel disk winding torque normal Is pulse outputted from reel sensor Check main PWB YES YES YES YES YES NO NO NO NO NO YES YES NO NO YES Press REW key 4 i Unusual sound in cassette insertion and ejection mode Is unusal sound heard during cassette control running Unusual sound heard with pinch roller lever going up or down Is unusual sound heard during loading u...

Page 37: ... Thrust gap found at reel disk Drive system out of contact with any part on main PWB Turn capstan motor by hand Unusual sound heard Check drive system s gears for damage Replace damaged gear with new one Reel disk Limiter pulley ass y Idler wheel ass y Check reel disk and main chassis And replace defective parts Adjust reel disk height Rearrange the parts on main PWB ...

Page 38: ... 3 When the output voltage fluctuates Check whether the secondary side photocoupler circuit operates normally Check the circuit and replace parts IC901 IC903 etc NO YES Check whether the primary side photocoupler output control functions normally Check the circuit and replace parts IC901 IC903 Q902 T901 etc NO YES Replace IC901 FLOW CHART NO 2 Fuse blown out Case 1 Case 2 Check for leak or short c...

Page 39: ... shutter Check line start sensor and all the way up thru to pin 67 of IC701 Check line pin 72 of IC701 and all the way up thru to pin 10 of P701 Replace loading motor Does pin 10 of P701 go from 2 5V to 4 2V when the cassette tape is inserted Does pin 67 of IC701 change from H to L level when the cassette tape is inserted Are start sensor shutter go to open when the cassette tape is inserted NO NO...

Page 40: ...oes power control H signal at pin 76 of IC701 change from L to H level Check IC701 Does the base of Q951 change from about 5 0V to 4 5V Check IC701 and all the way up thru to Q951 Is 5V sent out of the emitter of Q951 Check Q951 and the AT 5V line Check peripheral circuits for poor soldering FLOW CHART NO 11 The capstan motor fails to run Is the voltage more than about 2 6V DC given out of pin 24 ...

Page 41: ...e NO YES YES YES NO NO FLOW CHART NO 14 No head switching pulse See FLOW CHART NO 12 13 Is the drum motor rotating Is the drum PG FG signal present on pin 47 of IC701 Could be lines between P701 and IC701 Check peripheral circuit of P701 Is the drum PG FG signal present on pin 11 of P701 Replace IC701 Check or replace drum motor Check line between pin 11 of P701 and all the way up thru to pin 47 o...

Page 42: ...1 of IC701 YES NO NO Check peripheral circuit of pin 41 of IC701 C715 C7716 and R708 Check drum PG FG signal line Is the head switching pulse at pin 18 of IC701 present NO See FLOW CHART NO 14 YES YES Is the drum error at pin 29 of IC701 present NO Replace IC701 YES YES Is the drum control voltage applied to pin 2 of IC701 YES Is pin 25 of IC701 in high impedance NO YES NO Check lines between pin ...

Page 43: ...ace Is there CAP ERROR at pin 28 of IC701 Replace IC701 Replace A C head YES YES YES NO NO NO Is there CAP ERROR signal at pin 28 of IC701 NO NO NO Replace IC701 Does PB CTL signal appear at pin 58 of IC701 Replace IC701 Is there REC CTL signal output at pin 57 and 56 of IC701 Does PB CTL signal appear at pin 58 of IC701 Does A C head operate normally Adjust the height of the A C head Does the cap...

Page 44: ... into the pin 40 of IC701 Is picture signal output to the pin 38 of IC701 Check the line between pin 52 of IC201 and pin 40 of IC701 Check the line between pins 63 and 62 of IC201 and pins 64 and 65 of IC701 Is picture signal output to the emitter of video output buffer Q251 1 Line output Check Q251 periphery and output terminal periphery 2 RF output Check Q251 periphery and tuner pin 6 periphery ...

Page 45: ... and 26 of IC201 Check C212 Check between the pins 24 and 23 of IC201 Check C210 Is voltage 5V applied to the CCD section power terminal pin 36 of IC201 Is CCD control voltage approx 5V applied normally to the pin 37 from the pin 57 of IC201 Is clock signal approx 7 16 MHz 0 5 Vp p for CCD applied normally to the pin 44 from the pin 69 of IC201 Check the pins 13 and 14 of IC201 peripheral circuit ...

Page 46: ... 79 of IC201 Is luminance signal approx 0 5 Vp p input to the pin 39 of IC201 Check between the pin 39 and pin 26 of IC201 Check C212 Check between the pin 21 and pin 42 of IC201 Check C208 Check between the pin 18 and pin 19 of IC201 Check C206 Check between the pin 55 and pin 54 of IC201 Check C514 Check between the pins 79 and 78 of IC201 Is the luminance signal approx 0 25 Vp p input and outpu...

Page 47: ...ed at pins 53 and 57 of IC651 RF output terminal Is there audio signal outputted at pin 59 of IC651 Replace IC651 No Hi Fi E E sound heard pin 48 Hi Fi sound cannot be recorded E E mode is normal YES NO YES YES NO NO NO Is record FM signal output to the pins 21 to 24 ch 1 pins 21 and 22 ch 2 of IC651 Check the AH MZ connector Is the pin 29 of IC651 about 3 7V Check line of Hi Fi 5V Check Hi Fi REC...

Page 48: ...C head height adjusted properly Replace the AC head Readjust the A C head height Is audio signal output to the pin 11 of IC201 YES YES YES YES YES YES NO NO NO NO Is it possible to confirm the audio signal PB EQ on the pin 100 of IC201 Replace IC201 Is the pin 99 of IC201 in L level Check the line between the pin 11 of IC201 to the pin 62 of IC651 FLOW CHART NO 26 Check the periphery of pin 99 of ...

Page 49: ...49 VC A560U A A560U A560U B VC H960U H960U B H961U M E M O ...

Page 50: ...VC A560U A A560U A560U B VC H960U H960U B H961U VC A560U A A560U A560U B VC H960U H960U B H961U 50 51 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM ...

Page 51: ...VC A560U A A560U A560U B VC H960U H960U B H961U VC A560U A A560U A560U B VC H960U H960U B H961U 52 53 SIGNAL FLOW BLOCK DIAGRAM VC A560U A A560U A560U B ...

Page 52: ...VC A560U A A560U A560U B VC H960U H960U B H961U VC A560U A A560U A560U B VC H960U H960U B H961U 54 55 SIGNAL FLOW BLOCK DIAGRAM VC H960U H960U B H961U ...

Page 53: ...56 VC A560U A A560U A560U B VC H960U H960U B H961U POWER CIRCUIT BLOCK DIAGRAM ...

Page 54: ... omitted K 1000 ohms M 1 Meg ohm 2 All resistors are 1 8 watt unless otherwise noted 3 All capacitors µF unless otherwise noted P µµF Voltages and waveform are measured as follows DC voltages are measured with an SSVM placed between points indicated and chassis ground with the supply voltage of 120V AC and all controls for normal positions This circuit diagram is a standard one actual circuits pri...

Page 55: ...1U VC A560U A A560U A560U B VC H960U H960U B H961U 58 59 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses 9 SCHEMATIC DIAGRAM AND PWB FOIL PATTERN MAIN CIRCUIT 1 ...

Page 56: ...VC H960U H960U B H961U VC A560U A A560U A560U B VC H960U H960U B H961U 60 61 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses MAIN CIRCUIT 2 ...

Page 57: ...VC H960U H960U B H961U VC A560U A A560U A560U B VC H960U H960U B H961U 62 63 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses MAIN CIRCUIT 3 ...

Page 58: ...VC H960U H960U B H961U VC A560U A A560U A560U B VC H960U H960U B H961U 64 65 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses MAIN CIRCUIT 4 ...

Page 59: ...66 VC A560U A A560U A560U B VC H960U H960U B H961U VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses OPERATION CIRCUIT A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...

Page 60: ...67 VC A560U A A560U A560U B VC H960U H960U B H961U A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB FOIL PATTERN OPERATION PWB ...

Page 61: ...VC A560U A A560U A560U B VC H960U H960U B H961U VC A560U A A560U A560U B VC H960U H960U B H961U 68 69 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J MAIN PWB ...

Page 62: ...70 VC A560U A A560U A560U B VC H960U H960U B H961U M E M O ...

Page 63: ...s pièces de rechange étalonnées à un régime de tension une puissance etc superieurs Les pièces de rechange qui présentent ces caractéristiques spéciales de sécurité sont identifiées dans ce manuel les pièces électriques qui présentent ces particularités sont repérée par la marque å et sont hachurées dans les listes de pièces et dans les diagrammes schématiques La substitution d une pièce de rechan...

Page 64: ... 100µH AB L351 VP MK101K0000 V Peaking 100µH AB VC H960U H960U B H961U L503 VP XF120K0000 V Peaking 12µH AB L602 VP DF221K0000 V Peaking 220µH AB å L901 RCiLF0005AJZZ V Coil CiLF0005AJ AE å L933 RCiLP0147GEZZ J Coil CiLP0147GE AC å L934 RCiLP0147GEZZ J Coil CiLP0147GE AC TRANSFORMERS T601 RTRNH0098GEZZ J OSC Transformer AE VC A560U A560U A A560U B T601 RTRNHA001WJZZ V OSC Transformer AD VC H960U H...

Page 65: ...ic AB C604 VCKYCY1HB821K V 820p 50V Ceramic AA C605 VCEA9M1CW106M V 10 16V Electrolytic AB C606 VCEA9M1HW475M V 4 7 50V Electrolytic AB C607 VCEA9M1HW475M V 4 7 50V Electrolytic AB C608 VCEA9M0JW226M V 22 6 3V Electrolytic AB C610 VCKYCY1CF104Z V 0 1 16V Ceramic AA VC A560U A560U A A560U B C611 VCKYCY1CF104Z V 0 1 16V Ceramic AA C613 VCKYCY1EB183K V 0 018 25V Ceramic AA VC A560U A560U A A560U B C6...

Page 66: ...B H960U B H961U C7741 VCKYCY1CF104Z V 0 1 16V Ceramic AA VC A560U A A560U B H960U B H961U C7742 VCEA9M0JW226M V 22 6 3V Electrolytic AB VC A560U A A560U B H960U B H961U C7743 VCKYCY1CF104Z V 0 1 16V Ceramic AA VC A560U A A560U B H960U B H961U C7781 VCEA9M1CW226M V 22 16V Electrolytic AB C9335 VCEA9M1HW104M V 0 1 50V Electrolytic AC C9336 VCEA9M1HW104M V 0 1 50V Electrolytic AC RESISTORS RJ904 VRS ...

Page 67: ...U H960U B H961U R668 VRS CY1JF223J V 22k 1 16W Metal Oxide AA VC H960U H960U B H961U R671 VRS CY1JF103J V 10k 1 16W Metal Oxide AA VC H960U H960U B H961U R672 VRS CY1JF151J V 150 1 16W Metal Oxide AA VC H960U H960U B H961U R673 VRS CY1JF151J V 150 1 16W Metal Oxide AA VC H960U H960U B H961U R674 VRD RA2BE473J V 47k 1 8W Carbon AA VC H960U H960U B H961U R675 VRS CY1JF183J V 18k 1 16W Metal Oxide AA...

Page 68: ...l Oxide AA å R935 VRS CY1JF102J V 1k 1 16W Metal Oxide AA å R936 VRD RA2BE102J V 1k 1 8W Carbon AA å R938 VRS CY1JF000J V 0 1 16W Metal Oxide AA R961 VRD RA2BE561J V 560 1 8W Carbon AA R963 VRD RA2EE151J V 150 1 4W Carbon AA VC A560U A560U A A560U B R963 VRD RM2HD820J V 82 1 2W Carbon AA VC H960U H960U B H961U R968 VRS CY1JF103J V 10k 1 16W Metal Oxide AA R969 VRD RA2EE102J V 1k 1 4W Carbon AA R97...

Page 69: ...ifter VC A560U A560U B H960U H960U B H961U 28 MSPRD0210AJFJ V Reverse Guide Spring VC A560U A560U B H960U H960U B H961U 29 MSPRD0213AJFJ V Take up Load Double Action Spring VC A560U A560U B H960U H960U B H961U 30 MSPRD0214AJFJ V Supply Load Double Action Spring VC A560U A560U B H960U H960U B H961U 31 MSPRT0439AJFJ V Pinch Double Action spring Springing VC A560U A560U B H960U H960U B H961U 32 MSPRT...

Page 70: ...960U B H961U 209 XWHJZ31 03052 V Reel Washer 0 3 AC VC A560U A560U B H960U H960U B H961U 210 XWHJZ31 04052 V Reel Washer 0 4 AC VC A560U A560U B H960U H960U B H961U 211 XWHJZ31 05052 V Reel Washer 0 5 AC VC A560U A560U B H960U H960U B H961U 212 XWHJZ31 06052 V Reel Washer 0 6 AC VC A560U A560U B H960U H960U B H961U 213 XWHJZ31 07052 V Reel Washer 0 7 AC VC A560U A560U B H960U H960U B H961U 214 XWH...

Page 71: ...ap AE VC A560U A560U A A560U B 500 3 HDECQ2473AJSA V Cassette Flap VC H961U 500 4 HDECQ2474AJSA V Window Dec VC H961U 500 6 HiNDP2234AJSA V Timer LED Indicator AD VC A560U A560U A A560U B H960U H960U B 500 6 HiNDP2242AJSA V Timer LED Indicator VC H961U 500 7 MSPRD0105AJFJ V Cassette Spring 500 10 JBTN 3164AJSA V Button POWER AC VC A560U A560U A A560U B H960U H960U B 500 11 GCOVA2214AJZZ V R C Cove...

Page 72: ...HANICAL PARTS MECHANISM CHASSIS PARTS A B C D E F G H 1 2 3 4 5 6 A A 66 66 53 222 205 221 55 17 59 56 70 202 66 65 62 66 62 63 1 33 9 2 58 24 32 7 51 49 201 203 49 215 51 16 71 8 215 6 12 36 31 18 13 44 60 224 45 67 41 19 28 204 38 37 61 208 29 10 34 11 30 23 48 46 219 27 35 209 210 211 212 213 214 35 43 5 43 4 21 52 25 72 64 20 216 205 ...

Page 73: ...on Code Ref No Part No Description Code 81 VC A560U A A560U A560U B VC H960U H960U B H961U CASSETTE HOUSING CONTROL PARTS A B C D E F G H 1 2 3 4 5 6 A A 300 302 306 304 301 314 314 305 309 315 303 312 313 317 308 307 310 311 ...

Page 74: ...e 82 VC A560U A A560U A560U B VC H960U H960U B H961U CABINET PARTS A B C D E F G H 1 2 3 4 5 6 C E A D 601 D VC H961U only VC H960U VC H960U B VC H961U VC A560U A VC A560U VC A560U B 606 600 607 614 607 607 602 602 605 C B E A B 603 615 604 612 609 608 611 610 607 ...

Page 75: ...ightly bend the cover 5 Draw out the left side rod Do not mount the front panel with the cassette cover tilted too open Otherwise the cassette cover might wrongly run on the cassette housing Keep the cassette over about 45 open and make sure that the cassette cover open le ver is between the front panel and the cassette cover Now fix the front panel in place Before attaching the front panel in pos...

Page 76: ...ht 4 Slightly bend the cover 5 Draw out the left side rod Do not mount the front panel with the cassette cover tilted too open Otherwise the cassette cover might wrongly run on the cassette housing Keep the cassette over about 45 open and make sure that the cassette cover open le ver is between the front panel and the cassette cover Now fix the front panel in place Before attaching the front panel...

Page 77: ...ode Label SPAKX1152AJZZ VC A560U A560U B H960U H960U B H961U SPAKX1158EJZZ VC A560U A Packing Foam QCNW 8614AJZZ 75 ohm Coaxial Cable SPAKC4965AJZZ VC H960U H960U B SPAKC4979AJZZ VC A560U A560U B SPAKC4980EJZZ VC A560U A SPAKC4988AJZZ VC H961U Packing Case Accessories TiNS 4084AJZZ Instruction Book VC A560U A560U B H960U H960U B TiNS 4084EJZZ Instruction Book VC A560U A TiNS 4087AJZZ Instruction B...

Page 78: ...trol Center Yaita Tochigi 329 2193 Japan No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher D SEM P SMM TQ1110 S Jan 2002 Printed in JAPAN NA DS COPYRIGHT 2002 BY SHARP CORPORATION ALL RIGHTS RESERVED ...

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