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VC-S101U

SERVICE MANUAL

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

SHARP CORPORATION

VIDEO CASSETTE RECORDER

VC-S101U

In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only parts
identical to those specified should be used.

MODEL

 CONTENTS

Page

1. GENERAL INFORMATION .............................. 5

1-1 FEATURES .................................................5
1-2 SPECIFICATIONS ..................................... 5
1-3 LOCATION OF MAJOR COMPONENTS

AND CONTROL ......................................... 6

2. DISASSEMBLY AND REASSEMBLY .............. 7

2-1 DISASSEMBLY OF MAJOR BLOCKS ....... 7
2-2 DISASSEMBLY OF MECHANISM

AND MAIN PWB ASSEMBLY .................... 8

2-3 CARES WHEN REASSEMBLING .............. 9

3. FUNCTION OF MAJOR MECHANICAL PARTS

TOP VIEW ....................................................... 10
BOTTOM VIEW ...............................................11

4. ADJUSTMENT, REPLACEMENT AND

ASSEMBLY OF MECHANICAL UNITS .......... 12

5. ELECTRICAL ADJUSTMENT ........................ 31

5-1 ADJUSTMENT OF HEAD SWITCHING

POINT ....................................................... 32

5-2 ADJUSTMENT OF SLOW TRACKING

PRESET .................................................... 32

5-3 ADJUSTMENT OF FV (False Vertical

Sync) OF STILL PICTURE ...................... 32

5-4 CHECKING  OF  OFF  TRACK ................ 33
5-5 CHECKING  OF  E-E LEVEL ................... 33
5-6 ADJUSTMENT OF VCO .......................... 33
5-7 CHECKING OF SUB EMPHASIS LEVEL 33

Page

5-8 S-VHS / S-VHS ET / VHS WHITE

CLIP LEVEL  ADJUSTMENT ................... 34

5-9 S-VHS / S-VHS ET / VHS FM CARRIER/

DEVIATION ADJUSTMENT ..................... 34

5-10 S-VHS / S-VHS ET / VHS REC CHROMA

CURRENT ADJUSTMENT ....................... 35

5-11 S-VHS / S-VHS ET / VHS REC FM

CURRENT ADJUSTMENT ....................... 35

5-12 S-VHS / S-VHS ET / VHS PLAYBACK

LEVEL ADJUSTMENT ............................. 36

5-13 ADJUSTMENT OF SIF-INPUT LEVEL .... 36
5-14 ADJUSTMENT OF FILTER ...................... 36
5-15 ADJUSTMENT OF STEREO VCO ........... 37
5-16 ADJUSTMENT OF STEREO

SEPARATION ........................................... 37

6. MECHANISM OPERATION FLOWCHART

AND TROUBLESHOOTING GUIDE .............. 38

7. TROUBLESHOOTING ................................... 44
8. BLOCK DIAGRAM ..........................................58
9. CIRCUIT DIAGRAM AND PWB FOIL

PATTERN ....................................................... 66

10.REPLACEMENT PARTS LIST ....................... 91
11.EXPLODED VIEWS ..................................... 105
12.PACKING OF THE SET ............................... 109

S69I8VC-S101U

Summary of Contents for VC-S101U

Page 1: ... OF MECHANICAL UNITS 12 5 ELECTRICAL ADJUSTMENT 31 5 1 ADJUSTMENT OF HEAD SWITCHING POINT 32 5 2 ADJUSTMENT OF SLOW TRACKING PRESET 32 5 3 ADJUSTMENT OF FV False Vertical Sync OF STILL PICTURE 32 5 4 CHECKING OF OFF TRACK 33 5 5 CHECKING OF E E LEVEL 33 5 6 ADJUSTMENT OF VCO 33 5 7 CHECKING OF SUB EMPHASIS LEVEL 33 Page 5 8 S VHS S VHS ET VHS WHITE CLIP LEVEL ADJUSTMENT 34 5 9 S VHS S VHS ET VHS F...

Page 2: ...ss to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the video cassette recorder 2 Inspect all protective devices such as non metallic control knobs insulation materials cabinet backs adjustment and compartment covers or shields isolation resistor capacitor networks mechanical insulators etc 3 To be sure that no shock hazard exis...

Page 3: ...e courant de 120 volts Ne pas utiliser de transformateur d isolement pour cet essai Utiliser deux fils à pinces et connecter une résistance de 10 watts 1 5 kohm en parallèle avec un condensateur de 0 15 µF en série avec des pièces du coffret métallique exposées et une masse de terre connue telle qu un tuyau ou un conduit d eau Utiliser un VTVM ou VOM avec une sensibilité de 1000 ohms par volt ou p...

Page 4: ...h 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 D708 and D709 Adjust the notch of the part to the white marker of the symbo...

Page 5: ...l 8dBs 309mVrms 47k ohm Output level 8dBs 309mVrms 1k ohm Frequency response 80Hz 10kHz SP mode linear 20Hz 20kHz Hi Fi mode Signal to noise ratio 43dB SP mode linear Hi Fi Dynamic range 85dB Hi Fi models Wow and flutter 0 005 max Hi Fi mode with T 120 tape 4 Receiving channel VHF Channels 1 13 UHF Channels 14 69 CATV Channels A 8 A 5 W 84 Antenna input Impedance VHF UHF 75 ohm 5 Misc Fast forward...

Page 6: ...VC S101U 6 1 3 LOCATION OF MAJOR COMPONENTS AND CONTROL ...

Page 7: ...N PWB UNIT ANTENNA TERMINAL COVER SHIELD CASE Remove 1 screw 6 and 7 One of the shield screws is also used to hold the drum in place Once this shield screw has been removed the drum base gets loose In reassembling re fer to Mounting the head amplifier shield and take the tape travel check ing procedure again Y C PWB HOLDER Remove 3 screws 8 MECHANISM Remove 2 screws 9 2 screws 0 2screws q and 2 sc...

Page 8: ...rminal QCNW 0311AJZZ a Put solder at the specified spot on top of the U V tuner b Solder the tip of the lead in position c Connect the terminal to the projection of the shielding case 3 Screw XHPSD26P06WS0 Screw the shielding case to the mechanism chassis 4 Spacer PSPAZ0438AJZZ Place the spacers in the positions shown above 5 Insulating sheet PZETZ0004AJZZ Insert this sheet between the shielding c...

Page 9: ...e 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 mechanism to the main PWB install 1 screw Fix the soldering side of the main PWB as well as some points near the loading motor Connect again the FFC cable between the mechanism and the main PWB P...

Page 10: ... Tension arm ass y 4 Idler wheel ass y 5 Pinch drive lever ass y 6 Supply reel disk 7 Supply main brake ass y 8 Take up main brake ass y 9 Pinch drive cam 10 A C Head ass y 11 Reverse guide lever ass y 12 Casecon drive gear 13 Take up reel disk 14 Pinch roller lever ass y 15 Drum ass y 16 Loading motor 17 Drum motor 18 Take up pole base ass y 27 Fixing guide 28 I roller ass y ...

Page 11: ... OF MAJOR MECHANICAL PARTS BOTTOM VIEW No Function No Function 12 Casecon drive gear 19 Slow brake 20 Master cam 21 Capstan D D motor 22 Reel belt 23 Clutch lever 24 Limiter pulley ass y 26 Shifter 26 24 21 22 19 20 12 23 ...

Page 12: ...003 BK 2 Torque Gauge 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 for checking and adjusting the torque of take up and supply ...

Page 13: ...Industrial ethyl alcohol This mechanism does not need electric adjustment with variable resistor Check parts If any deviation is found clean or replace parts Possible symptom encountered Small sound or sound distortion Poor S N ratio no color Poorflatnessoftheenve lope with alignment tape Notaperunning uneven color No tape running tape slack Cassette not loaded or unloaded No tape running tape sla...

Page 14: ...ool do not contact the guide pin or drum 5 After installing the cassette housing control once per form cassette loading operation TO RUN A TAPE WITHOUT THE CASSETTE HOUSING CONTROL ASSEMBLY 1 Remove the full surface panel 2 Short circuit P803 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 ...

Page 15: ...brake surface 2 After reassembly check the video search rewind back tension see page 18 and check the brake torque see page 20 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 shift results in damage Figure 4 6 Not...

Page 16: ...iting P803 provided at the right of display tube on the 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 rotation every 2 to 3 ...

Page 17: ...turn it counterclockwise very slowly one rotation every 1 to 2 seconds and check that the torque is within the set value 14 0 3 9mN m 144 40gf cm Set value EP6 9 2 5mN m 70 25gf cm 500g Cassette torque meter Figure 4 10 Checking 1 Make sure that value is within the setting 6 9 2 5mN m 70 25gf cm 2 The winding up torque fluctuates due to variation of rotation torque of limiter pulley ass y Read the...

Page 18: ...the pinch roller from the capstan shaft Do not separate excessively Or the pinch lever and pinch double action lever may disengage 2 Engage the tension gauge adapter with the pinch roller shaft and pull in the arrow direction 3 Gradually return the pinch roller and measure the pulling force when the pinch roller contacts the capstan shaft 4 Make sure that the measured value is within setting 8 8 t...

Page 19: ...USTMENT OF RECORD PLAYBACK BACK TENSION Remove the cassette housing control assembly After short circuiting P803 provided at the right of display tube on the 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...

Page 20: ...braketorqueatthesupplysideandthe 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 20 CHECKING THE BRAKE TORQUE Checking the brake torque at the supply s...

Page 21: ...ng state unplug the power cord Removal 1 Remove the screws 123 Azimuth screw Tilt screw 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 spring out A C head PWB 2 Spring 1 Solder 10 8mm 10 8mm Azimuth screw Height screw Tilt screw A C head base Figure 4 25...

Page 22: ...ange to 13 38 mm using the reverse guide height adjustment jig in tape loading state Refer to Figure 4 28 a b Figure 4 29 3 Set the tape and check for tape crease near the reverse guide in the playback mode If crease is found turn the reverse guide adjustment nut to remove crease As for crease check refer to Figure 4 30 a b Figure 4 28 2 Rotate counterclockwise the reverse guide height ad justment...

Page 23: ...ape in which 1 kHz linear audio signal has been recorded adjust the height screw so as to get max audio output 4 Using the alignment tape in which 7 kHz linear audio signal has been recorded adjust the azimuth screw so as to get max audio output 5 Repeat the above adjustment steps 3 and 4 a couple of times Finally take the step 4 again Figure 4 33 For X value adjustment Adjust the X value turning ...

Page 24: ...ckwise direction to flatten the envelope Figure 4 35 4 A C head X value adjustment 1 Tentatively fix A C head arm screws 1 and 2 by the method described in Page 21 Replacement 3 2 Playback the alignment tape and press S803 lo cated at the right of display tube on the opreation PWB As a result the auto tracking is automatically cancelled so that the X value adjustment mode is set 3 Move the A C hea...

Page 25: ...st the playback switching point for adjustment of servo circuit REPLACEMENT OF THE CAPSTAN D D DIRECT DRIVE MOTOR Remove the mechanism from the main PWB refer to Page 8 1 When removing the mechanism from the main PWB Removal Follow the order of indicated numbers 1 Remove the reel belt 1 Figure 4 37 2 Remove the three screws 2 Reassembly 1 Taking care so that the capstan shaft does not contact the ...

Page 26: ... perform also the electrical adjustment Playback switching point adjustment X position adjustment and check Standard and x 3 slow tracking adjustment 7 After replacing the drum clean the drum Figure 4 39 2 1 3 ASSEMBLING OF PHASE MATCHING MECHANISM COMPONENTS Assemble the phase matching mechanism compo nents in the following order 1 Assemble the pinch roller assembly and pinch drive cam 2 Mounting...

Page 27: ... y 3Insert Open Lever Insert reverse guide lever ass y Align here 2 Insert pinch drive cam Pinch drive lever ass y Fit the pinch drive cam so that the notch of pinch drive cam aligns with the dent of pinch drive lever assembly Fit the pinch drive cam so that the notch of pinch drive lever assembly aligns with the half round notch of chassis Turn the reverse guide lever assembly counterclockwise to...

Page 28: ...T Insert point 3 Insert point 4 Insert point 5 Release point 3 Phase matching point 1 Shaft 1 Shaft 1 Shaft 2 Insert point 2 Rotation point 2 1 Make sure that the loading gear is at the Phase Matching point 1 as shown below 2 Install paying attention to 5 insertion points and 3 release points 3 For the phase matching at the insertion point 1 see the Phase Matching point 2 as shown below 4 Finally ...

Page 29: ...ve the loading motor and install the replacement loading motor as shown below Figure 4 46 Figure 4 44 2 Wheninstallingthemastercam align the casecon drive gear round mark with the half round notch of master cam The loading motor pressing in must be less than 14 7 N 15 gf Adjust the distance between motor and pulley to 10 2 mm E ring XRESJ30 06000 Master cam Fully turn clockwise Fully turn counterc...

Page 30: ...ive Gear R ASSEMBLY OF CASSETTE HOUSING 1 Drive Gear and R Drive angle ass y Figure 4 47 MSPRT0381AJFJ Apply grease Apply grease Apply grease LANGF9592AJFW Top surface should be free from scratches or soil Drive angle Drive gear R Frame Figure 4 48 ...

Page 31: ... and age the set for more than 5 minutes Whenever possible use an S terminal compatible color bar signal generator for measurement purpose If not available operate your color bar signal generator modifying one step Take the step Feed the standard color bar signal 1 0 Vp p via the video input terminal instead of the step Feed the standard color bar signal 1 0 Vp p via the S input terminal Instrumen...

Page 32: ... the tracking channel select and buttons Sweep the noise bar down to the bottom of the color monitorscreen 6 Press the PLAY button to bring back the play mode Then press the PAUSE STILL button to call up the still play mode Now make sure there is no noise bar on the screen 7 For the EP mode put adjustment at the same adjust ment way as SP mode 5 3 ADJUSTMENT OF FV False Vertical Sync OF STILL PICT...

Page 33: ...p via the S input terminal to call up the S VHS mode 2 Hold down the STOP button S885 on the operation PWB and the SET button S802 on the main PWB at once for about 2 seconds to call up the test mode 3 Press the numeric button 1 on the remote controller Make sure Y 1 appears on the set s display 4 Press the CH UP or DN button on the set or the remote controller until the E E level becomes as speci...

Page 34: ...S VHS ET button on the remote controller For the VHS mode insert a VHS cassette and turn off the S VHS ET button on the remote controller 100 Sync tip 100 White White clip level Figure 5 5 Measuring Spectrum analyser instrument Mode REC S VHS VHS S VHS ET SP EP mode DNR OFF Input Signal Standard color bar signal S input terminal 1 0 Vp p Test point TP203 GND Adjusting Hold down the STOP button S88...

Page 35: ...Pins 1 and 2 of TP305 SP mode Pin 1 of TP307 GND Adjusting Hold down the STOP button S885 and SET button S802 at once and adjust the level using the CH buttons on the set or the remote controller Specification S VHS EP mode 24 2 mVp p Red level SP mode 28 2 mVp p Red level S VHS ET EP mode 20 2 mVp p Red level SP mode 26 2 mVp p Red level VHS EP mode 26 2 mVp p Red level SP mode 28 2 mVp p Red lev...

Page 36: ...TSC color bar Test point S output terminal Terminated Adjusting Hold down the STOP button S885 and SET button S802 at once and adjust the level using the CH buttons on the set or the remote controller Specification 1 00 0 04 Vp p 1 Playback the alignnment tape VROLTHCS for S VHS VROATSV FOR VHS 2 Hold down the STOP button S885 on the operation PWB and the SET button S802 on the main PWB at once fo...

Page 37: ...ION 1 ADJ so that the difference be tween left channel and right channel outputs becomes maximized 4 Set the audio signal to 3kHz and the modulation factor to 30 right channel only and adjust R165 SEPA RATION 2 ADJ so that the difference between left channel and right channel outputs becomes maxi mized 5 Repeat STEP 3 until obtain a specification Measuring AC milli voltmeter instrument Mode E E In...

Page 38: ...sensor close Cassette is judged caught halfway Cassette LED or some other part is judged defective 6 MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE MECHANISM OPERATION FLOWCHART 1 0 1 1 1 1 0 1 1 1 1 1 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 S sensor Open Close Mode detection inside sensor A 1 1 1 0 0 0 0 0 0 Mode detection inside sensor B 0 1 1 1 1 0 1 1 0 CS EJ ULD PU1...

Page 39: ...top 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 Cam switch is at PU2 p...

Page 40: ...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 motor turns countercloc...

Page 41: ... 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 control system in ...

Page 42: ...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 unusual sound heard during cassette coutrol running Unusual sound heard with pinch roller lever going up or down Is unusual sound heard during loading unloading Check pinc...

Page 43: ... 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 44: ...NG 3 In case of abnormal noise sound Check the secondary rectifier circuits and rectifier diodes for short circuit D906 thru D909 D918 IC904 etc FLOW CHART NO 5 TIMER TROUBLESHOOTING 1 The flourescent display tube fails light up Is the supply voltage of 5V fed to pin 18 of IC801 Check AT 5V line Is the supply negative voltage of 25V fed to pin 16 of IC801 Check AT 25V line Is there 4MHz oscillatio...

Page 45: ... between receiver and IC701 Are the remote control 1 2 settings proper Make the same settings on the set and the remote controller Replace IC701 SHUTTLE RING OPERATION DOES NOT FUNCTION Is the shuttle switche well fit and functioning Do the JOG 1 and JOG 2 circuits from the shuttle switch to pins 8 and 9 of IC701 function With shuttle switch operated is its specified voltage applied to the JOG 1 a...

Page 46: ... MOTOR TROUBLESHOOTING Does the take up reel disk turn when the capstan motor is running Check reel disk and reel drive unit With the take up reel disk running is the reel pulse signal being fed to pin 2 of IC701 Check line between pin 2 of IC701 and take up reel sensor Is the voltage about 10V sent out from pin 5 of IC705 Check IC705 Is the specified voltage about 10V applied at the loading motor...

Page 47: ...heck line between pin 5 of SC701 connector and pin 66 of IC701 Is head switching pulse sent out from the pin 23 of IC701 Replace IC701 Check drum motor YES YES YES NO NO Is drum FG signal fed to pin 3 of SC701 connector Check drum motor YES NO Is drum FG signal fed to pin 65 of IC701 Check line between pin 3 of SC701 connector and pin 65 of IC701 YES NO D FG D PG YES NO YES YES NO NO FLOW CHART NO...

Page 48: ...APSTAN SERVO TROUBLESHOOTING Capstan servo does not function Only PB mode inoperative Only REC mode inoperative YES NO YES NO NO NO Check composite sync signal line Is there 14 318MHz oscillation at pins 38 and 37 of IC701 Check peripheral circuit of X701 YES Check capstan motor unit and or replace Is there capstan error signal at pin 34 of IC701 Replace IC701 Replace A C head YES YES YES NO NO NO...

Page 49: ...IC701 Check the line between pin 31 of IC201 and pin 1 of IC2503 Is composite video signal fed to pin 9 of IC2503 Is composite video signal fed to the video output terminal J2501 Check the line between pin 3 of IC2303 and pin 5 of IC2506 See if the switching circuit IC2506 for the S terminal J8151 on the front and that J2503 on the back functions Check the line between pin 7 of IC2506 and pin 20 o...

Page 50: ...n 15 of adjustment voltage supply IC IC203 to pin 58 of IC201 Are deviation control DC voltage about 1 6 V and carrier control voltage about 1 5 Vdc applied from pins 18 and 17 of adjustment voltage supply IC IC203 to pins 68 and 73 of IC201 respectively Check the record current adjustment circuit IC206 Q207 between pin 70 of IC201 and TP203 Check the record equalizer circuit Q331 thru 4 between T...

Page 51: ...ns 11 and 13 of IC201 respectively Is there VCO signal of about 8 4 MHz 600 mVp p at pin 7 of IC201 Check the peripheral circuits of pin 7 of IC201 Check the record current adjustment circuit IC206 between pin 80 of IC201 and pin 3 of IC206 Is record control voltage about 2 7 Vdc applied from pin 4 of adjustment voltage supply IC IC203 to pin 2 of IC206 Is reference voltage of adjustment voltage s...

Page 52: ...ck also the 5V AL playback line head short pulse line FV control line and H A select line Is 3 58 MHz signal fed to pin 9 of IC410 Are the equalizer level select terminals at pins 5 6 14 15 and 17 of IC401 switched by mode select SP L signal Check the line between pins 1 as well as 2 of IC410 and pin 67 of IC201 with buffer Q404 and 5 in between Is 5V voltage applied to pin 71 FM Vcc of IC201 Repl...

Page 53: ...upply IC IC203 to pin 56 of IC201 Check the sub emphasis circuit IC401 Check C229 Check the luminance signal 1H delay peripheral circuit IC204 and Q421 Q422 and FL202 Replace IC201 Replace IC201 Replace IC201 Check the peripheral circuits of adjustment peak voltage setting circuits IC207 IC208 Replace as required Is reference voltage of adjustment voltage supply IC IC203 as specified 4 4 V at pin ...

Page 54: ...201 Are there signals of about 3 58 MHz 500 mVp p and of 3 58 MHz 1 2 Vp p at pins 11 and 13 of IC201 respectively Is there VCO signal of about 8 4 MHz 600 mVp p at pin 7 of IC201 Check the line between pin 21 of IC201 and pin 14 of IC204 Check the C 1H CCD circuit IC204 Check the line between pin 16 of IC204 and pin 9 of IC2301 Check the peripheral circuits of NR circuit Check the line between pi...

Page 55: ...ner Front input terminal Rear input terminal AV2 Rear input terminal L ch R ch pin 39 pin 38 pin 5 pin 1 pin 43 pin 41 pin 47 pin 45 Check front input terminal J601 2 Check the input switching circuit IC6601 for the AV2 input terminal on the back and AUDIO terminal Check UV tuner and MTS decoder circuit IC161 Check rear input terminal J6502 Is the supply voltage of 5V fed to pin 23 and 9V fed to p...

Page 56: ... heck line between pins 11 and 13 of IC651 and audio output terminal J6501 No Hi Fi sound playback E E mode is possible NO NO NO FLOW CHART NO 28 LINEAR SOUND MODE TROUBLESHOOTING 1 Is the recording audio signal inputted to pin 16 of IC601 Is there H level at pin 24 of IC601 YES YES No linear sound recording Hi Fi E E mode is possible Does the bias oscillation circuit function Check line between p...

Page 57: ...there audio playback signal at pin 10 of IC601 YES Is there audio playback signal at pin 12 of IC601 NO YES Is there audio playback signal at pin 22 of IC601 Is there audio playback signal at pin 31 of IC651 Is there L level at pin 24 of IC601 Check E E L line Check BIAS CTL H line Replace IC601 YES Are the A C head harness and the PB AMP peripheral parts normal Check line between pins 10 and 12 o...

Page 58: ...58 VC S101U 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM ...

Page 59: ...59 VC S101U ...

Page 60: ...60 VC S101U SIGNAL FLOW BLOCK DIAGRAM REC Luminance signal REC Chrominance signal ...

Page 61: ...61 VC S101U PB Luminance signal PB Chrominance signal minance signal ominance signal EE Luminance signal EE Chrominance signal EE Video Composite signal ...

Page 62: ...62 VC S101U AUDIO BLOCK DIAGRAM ...

Page 63: ...63 VC S101U REC Signal PB Signal EE Signal ...

Page 64: ...64 VC S101U POWER CIRCUIT BLOCK DIAGRAM ...

Page 65: ...owing diagram are measured with an SSVM upon receiving color bars 400 Hz sound signal in either the record mode or the play mode voltage is indi cated as follows 4 0 Record mode SP 4 0 PB mode SP 4 0 LP mode 4 0 EP mode NOTE 1 The unit of resistance ohm is 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 a...

Page 66: ...66 7 6 5 4 3 2 1 A B C D E F G H VC S101U VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses 9 SCHEMATIC DIAGRAM AND PWB FOIL PATTERN MAIN CIRCUIT 1 ...

Page 67: ...67 13 12 11 10 9 8 7 VC S101U ...

Page 68: ...68 7 6 5 4 3 2 1 A B C D E F G H VC S101U MAIN CIRCUIT 2 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 69: ...69 13 12 11 10 9 8 7 VC S101U ...

Page 70: ...70 7 6 5 4 3 2 1 A B C D E F G H VC S101U MAIN CIRCUIT 3 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 71: ...71 13 12 11 10 9 8 7 VC S101U ...

Page 72: ...72 7 6 5 4 3 2 1 A B C D E F G H VC S101U MAIN CIRCUIT 4 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 73: ...73 13 12 11 10 9 8 7 VC S101U ...

Page 74: ...74 7 6 5 4 3 2 1 A B C D E F G H VC S101U MAIN CIRCUIT 5 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 75: ...75 13 12 11 10 9 8 7 VC S101U ...

Page 76: ...76 7 6 5 4 3 2 1 A B C D E F G H VC S101U MAIN CIRCUIT 6 VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 77: ...77 13 12 11 10 9 8 7 VC S101U ...

Page 78: ...78 7 6 5 4 3 2 1 A B C D E F G H VC S101U Y C CIRCUIT VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 79: ...79 13 12 11 10 9 8 7 VC S101U ...

Page 80: ...80 7 6 5 4 3 2 1 A B C D E F G H VC S101U Hi Fi JACK CIRCUIT VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 81: ...81 13 12 11 10 9 8 7 VC S101U ...

Page 82: ...82 7 6 5 4 3 2 1 A B C D E F G H VC S101U NR CIRCUIT VOLTAGE MEASUREMENT MODE PB Parentheses REC Without Parentheses ...

Page 83: ...83 13 12 11 10 9 8 7 VC S101U ...

Page 84: ...84 7 6 5 4 3 2 1 A B C D E F G H VC S101U PWB FOIL PATTERN MAIN PWB ...

Page 85: ...85 13 12 11 10 9 8 7 VC S101U ...

Page 86: ...86 7 6 5 4 3 2 1 A B C D E F G H VC S101U Y C PWB SIDE A Y C PWB SIDE B ...

Page 87: ...87 13 12 11 10 9 8 7 VC S101U NR PWB SIDE A NR PWB SIDE B ...

Page 88: ...88 7 6 5 4 3 2 1 A B C D E F G H VC S101U Hi Fi JACK PWB SIDE A SIDE B ...

Page 89: ...89 13 12 11 10 9 8 7 VC S101U OPERATION PWB FRONT A V PWB ...

Page 90: ...90 7 6 5 4 3 2 1 A B C D E F G H VC S101U JACK PWB SIDE A JACK PWB SIDE B ...

Page 91: ... usine et repérée dans ce manuel de service peut provoquer une électrocution un incendie ou tout autre sinstre COMMENT COMMANDER LES PIECES DE RECHANGE Pour que votre commande soit rapidement et correctement remplie veuillez fournir les renseignements suivaints 1 NUMERO DU MODELE 2 NO DEREF 3 NO DE PIECE 4 DESCRIPTION MARK SPARE PARTS DELIVERY SECTION PRINTED WIRING BOARDASSEMBLIES NOT REPLACEMENT...

Page 92: ...1S563 AF D707 RH PX0252GEZZ J GP1S563 AF D708 RH PX0253GEZZ J GP1S94 AF D709 RH PX0253GEZZ J GP1S94 AF D710 RH DX0475CEZZ V Diode AB D721 VHD1SS119 1 V Diode AB D901 VHD10ELS4 1 V Diode AD å D902 VHDAP01C 1 V Diode AC D903 RH DX0475CEZZ V Diode AB å D906 VHD15DF1FC 1E V Diode AD å D907 VHD10ELS4 1 V Diode AD å D908 RH DX0456CEZZ V Diode AF å D909 VHD10ELS4 1 V Diode AD D910 VHD10ELS4 1 V Diode AD ...

Page 93: ...21K V 220p 50V Ceramic AA C626 VCKYCY1CB104K V 0 1 16V Ceramic AB C627 VCKYCY1EB183K V 0 018 25V Ceramic AA C628 VCKYCY1EB183K V 0 018 25V Ceramic AA C629 VCEA9M1CW106M V 10 16V Electrolytic AB C630 VCKYCY1HB332K V 3300p 50V Ceramic AA C631 VCQYWA1HA471J V 470p 50V Mylar AA C701 VCKYCY1HF103Z V 0 01 50V Ceramic AA C703 VCEA9M1HW105M V 1 50V Electrolytic AB C704 VCKYCY1CF224Z V 0 22 16V Ceramic AA ...

Page 94: ...K V 0 01 25V Ceramic AA C6405 VCKYCY1EB103K V 0 01 25V Ceramic AA C6406 VCKYCY1EB103K V 0 01 25V Ceramic AA C6407 VCKYCY1EB103K V 0 01 25V Ceramic AA C6420 VCCCCY1HH101J V 100p 50V Ceramic AA C7705 VCKYCY1HF103Z V 0 01 50V Ceramic AA C7707 VCCCCY1HH3R0C V 3p 50V Ceramic AA C7711 VCEA9M1CW106M V 10 16V Electrolytic AB C7712 VCKYCY1HB102K V 1000p 50V Ceramic AA C7713 VCKYCY1HB102K V 1000p 50V Cerami...

Page 95: ... V 330 1 16W Metal Oxide AA R785 VRD RA2BE102J V 1k 1 8W Carbon AA R786 VRD RA2BE102J V 1k 1 8W Carbon AA R787 VRD RA2BE102J V 1k 1 8W Carbon AA R788 VRD RA2BE102J V 1k 1 8W Carbon AA R789 VRD RA2BE102J V 1k 1 8W Carbon AA R790 VRS CY1JF222J V 2 2k 1 16W Metal Oxide AA R791 VRS CY1JF222J V 2 2k 1 16W Metal Oxide AA R794 VRS CY1JF123J V 12k 1 16W Metal Oxide AA R795 VRS CY1JF563J V 56k 1 16W Metal ...

Page 96: ...077TAZZ V Ferrite Bead AB å FB901 RBLN 0020CEZZ V Ferrite Bead AB å FB902 RBLN 0036CEZZ V Ferrite Bead AB FB903 RBLN 0020CEZZ V Ferrite Bead AB å FH901 QFSHD1014CEZZ V Fuse Holder AC å FH902 QFSHD1013CEZZ V Fuse Holder AC P161 QPLGN0347REZZ V Plug 3pin AA P701 QPLGZ0883GEZZ J Plug 8pin AC AD P702 QPLGN0247REZZ V Plug 2pin AA P2501 QPLGZ1060GEZZ J Plug 10pin AC P2502 QPLGZ1260GEZZ J Plug 12pin AE P...

Page 97: ...AA C228 VCKYCY1AF105Z V 1 10V Ceramic AC C229 VCKYCY1CB104K V 0 1 16V Ceramic AB C230 VCKYCY1AF105Z V 1 10V Ceramic AC C231 VCKYCY1HF103Z V 0 01 50V Ceramic AA C232 VCKYCY1HF103Z V 0 01 50V Ceramic AA C233 VCCCCY1HH120J V 12p 50V Ceramic AA C234 VCCCCY1HH331J V 330p 50V Ceramic AA C235 VCCCCY1HH121J V 120p 50V Ceramic AA C236 VCKYCY1CB104K V 0 1 16V Ceramic AB C237 VCCCCY1HH220J V 22p 50V Ceramic ...

Page 98: ...5M V 4 7 50V Electrolytic AB C471 VCEAEM1HW225M V 2 2 50V Electrolytic AB C472 VCEAEM1HW225M V 2 2 50V Electrolytic AB C473 VCKYCY1HF103Z V 0 01 50V Ceramic AA C474 VCEAEM1CW476M V 47 16V Electrolytic AB C475 VCCCCY1HH301J V 300p 50V Ceramic AA C476 VCCCCY1HH301J V 300p 50V Ceramic AA C477 VCCCCY1HH221J V 220p 50V Ceramic AA C478 VCCCCY1HH820J V 82p 50V Ceramic AA C479 VCCCCY1HH271J V 270p 50V Cer...

Page 99: ...l Oxide AA R444 VRS CY1JF151J V 150 1 16W Metal Oxide AA R445 VRS CY1JF152J V 1 5k 1 16W Metal Oxide AA R446 VRS CY1JF332J V 3 3k 1 16W Metal Oxide AA R447 VRS CY1JF332J V 3 3k 1 16W Metal Oxide AA R448 VRS CY1JF391J V 390 1 16W Metal Oxide AA R449 VRS CY1JF122J V 1 2k 1 16W Metal Oxide AA R451 VRS CY1JF102J V 1k 1 16W Metal Oxide AA R452 VRS CY1JF682J V 6 8k 1 16W Metal Oxide AA R453 VRS CY1JF223...

Page 100: ...Metal Oxide AA R176 VRS CY1JF473J V 47k 1 16W Metal Oxide AA R177 VRS CY1JF392J V 3 9k 1 16W Metal Oxide AA R178 VRS CY1JF332J V 3 3k 1 16W Metal Oxide AA R179 VRS CY1JF333J V 33k 1 16W Metal Oxide AA R180 VRS CY1JF103J V 10k 1 16W Metal Oxide AA R181 VRS CY1JF223J V 22k 1 16W Metal Oxide AA R652 VRS CY1JF000J V 00 1 16W Metal Oxide AA R654 VRS CY1JF000J V 00 1 16W Metal Oxide AA R655 VRS CY1JF471...

Page 101: ...16W Metal Oxide AA R2347 VRS CY1JF681J V 680 1 16W Metal Oxide AA R2348 VRS CY1JF472J V 4 7k 1 16W Metal Oxide AA R2349 VRS CY1JF333J V 33k 1 16W Metal Oxide AA R2350 VRS CY1JF332J V 3 3k 1 16W Metal Oxide AA R2351 VRS CY1JF102J V 1k 1 16W Metal Oxide AA R2352 VRS CY1JF105J V 1M 1 16W Metal Oxide AA R2353 VRS CY1JF332J V 3 3k 1 16W Metal Oxide AA R2354 VRS CY1JF101J V 100 1 16W Metal Oxide AA R235...

Page 102: ... AF Arm Ass y 10 MLEVF0519AJZZ V Supply Loading AF Arm Ass y 11 MLEVF0499AJZZ V Pinch Drive Lever Ass y AG 12 MLEVF0500GEZZ J Pinch Roller Lever Ass y AW 15 MLEVF0523AJZZ V Tension Arm Ass y AH 16 LANGF9620AJFW V A C Head Plate AG 17 MLEVP0271AJZZ V Sifter Drive Lever AE 18 MLEVP0272AJZZ V Pinch Double Action LeverAD 19 MLEVP0301AJZZ V Reverse Guide Lever Ass yAL 20 MLEVP0275AJZZ V Reverse Drive L...

Page 103: ... R Spring AB 310 MSPRD0166AJFJ V Drive Gear R Spring AE 311 MSPRP0175AJFJ V Cassette Spring AE 312 MSPRT0381AJFJ V Double Action Spring AC 313 NGERH1278AJZZ V Drive Gear L AE 314 NGERH1309AJZZ V Drive Gear R AE 315 NGERR1008AJ00 V Double Action Rack Gear AE 316 NGERR3005AJFW V Drive Angle Gear AG 317 NSFTD0041AJFD V Main Shaft AH SCREW NUTS AND WASHERS 201 XBPSD26P08000 V Screw 2 6P 8S A C Head AA...

Page 104: ... Cable AN QCNW 1350TAZZ V S VHS Cable AN QCNW 0298AJZZ V 75 ohm Coaxial Cable AK ACCESSORIES Not Replacement Item TGAN 0001AJZZ Guarantee Card TCADH0110AJZZ Timer Card TLABS0415AJZZ Caution Label TLABZ1617AJZZ Feature Label PACKING PARTS NOT REPLACEMENT ITEM SPAKC4108AJZZ Packing Case SPAKX1018AJZZ Packing Foam SSAKA0001AJZZ Polyethyrene Sack SPAKP0030AJZZ Polyethyrene Bag ...

Page 105: ...2 33 15 1 50 218 207 67 207 63 62 66 66 66 53 65 216 41 61 21 38 17 208 60 47 44 6 30 36 9 39 45 219 10 30 40 27 43 46 43 35 35 37 34 23 62 48 209 210 211 212 213 223 5 26 32 68 69 66 55 16 222 221 202 202 220 59 70 57 71 56 201 74 73 72 216 226 224 11 EXPLODED VIEW OF MECHANISM PARTS MECHANISM CHASSIS PARTS ...

Page 106: ...7 6 5 4 3 2 1 A B C D E F G H 106 VC S101U 301 304 311 308 311 305 306 309 303 312 316 315 307 314 310 317 313 302 300 CASSETTE HOUSING CONTROL PARTS ...

Page 107: ... C D E F G H 107 VC S101U B A B A C D C D 621 618 619 620 602 618 610 618 613 617 600 617 618 608 612 604 625 605 629 601 609 603 621 618 618 628 627 606 607 622 626 619 611 611 E 614 642 E 640 641 650 MECHANICAL PARTS ...

Page 108: ...he 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 position make surethatthecassettecover open lever is in its right place lower most If it is outofposition pushitdown with a finger Cassette cover Cassette cover open lever Cassette housing Cassette cover open lever Cassette cover open lever Cassette c...

Page 109: ...acking Foam SPAKC4108AJZZ Packing Case TLABK0005AJZZ Number Card Batteries SPAKP0030AJZZ Polyethylene Bag FRONT 12 PACKING OF THE SET RF conv CH preset at 3 channel Accessories TiNS 3599AJZZ Operation Manual TGAN 0001AJZZ Guarantee Card TCADH0110AJZZ Timer Card SSAKA0001AJZZ Polyethylene Sack QCNW 0298AJZZ 75ohm Coaxial Cable QCNW 1350TAZZ S VHS Cable QCNW 8070AJZZ A V Cable ...

Page 110: ...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 TQ0680 S June 1999 Printed in JAPAN NA KY SHARP CORPORATION AV Systems Group Quality Reliability Control Center Yaita Tochigi 329 2193 Japan ...

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