Sanyo VHR-770, Service Manual

Page 1: ...le below Materials Model No Reference No V95 I Mechanism Mechanism MM531433 Manual V95 II Mechanism MS531 500 The components designated by a symbol in this schematic diagram designates components whose value are of special significance to product safety Should any component designated by a symbol need to be replaced use only the part designated in the parts List Do not deviate from the resistance ...

Page 2: ... mode numbers When the O button on the remote control unit is pressed during display and clearing the self diagnosis display and mechanism mode display Display panel I 1 Self Diagnosis number Mechanism mode number Reception channel display Tape counter Seconds display Self Diagnosis Contents No Problem Main Possible Cause Mechanism Operations and State After Occurrence 00 There is no abnormality i...

Page 3: ...while moving from 1 REVIEW 2 tact is faulty shifts to the INITIAL mode and the IDLER 3 STILL 4 BRAKE and power goes off to 5 STOP Note For details of mechanism operations corresponding to the mechanism positions of the self diagnosis numbers 08 and 09 above refer to the separate volume on the V95 I mechanism manual These manual reference numbers are shown in the cover Mechanism Mode Display Conten...

Page 4: ...an 0 95V Tracking adjustment has not When the average output volt age of the two channels is less than 0 5V Tracking adjustment has not been performed accurately Both video heads are clogged Both video heads have worn out When the output voltage dif ference of the two channels is more than 0 95V Tracking adjustment has not been performed accurately One video head is clogged One video head has worn...

Page 5: ... parts remove the mechanism unit and the CP 1 PWB assembly connected as follows Spread out the lock clamps C in the arrow direction slightly and remove the TM 1 PWB as shown in Fig 1 1 2 Remove the screw o at the chassis Remove the screw in the chassis the screw 6 and the holder in this order Remove the two screws n and two screws of the mechanism unit The two screws of the cassette tray can be re...

Page 6: ...M P F2HN rA 2 Tray Lock Lever M PF2HN A 3 TM 2 F Assembly Chassis Fig 1 1 3 I 6 ...

Page 7: ...facing up M PF2HN A 4 CP 1 PWB Assembly Foii side Screws L 1 1 1 0 4 Mechanism Main Unit TM 1 PWB v W Cassette ComDariment w TM 2 PWB Fig 1 1 4 1 3 INSTALLATION OF THE FRONT PANEL When installing the front panel to the chassis after repaires and adjustments 1 Pressing down the door opener lever of the mechanism Note Opened cassette door position does not install the front main unit panel to the ch...

Page 8: ...1 4 CIRCUIT BOARD LOCATIONS L MP2HN A MP2HN Nz VHR 770 Australia TN 3 PWB TM 1 PWB TB 2 VHR 770 New Zealand TN 5 PWB TM 1 PWB CP 1 PWB CP 1 Assembly PWB Assembly 8 ...

Page 9: ...een finish ready to operate the all operating mode 2 1 SERVO CIRCUIT ADJUSTMENT These adjustments should be done upon completion of the tape transport adjustments If the tape transport adjustments except the tilt adjustment are done after these adjustments follow the procedures again in section 2 1 3 Switching position adj When a cassette tape is loaded auto tracking will be set immediately after ...

Page 10: ...TP183 SW P VHJ 0009 or VHJ 0023 Adj Location Adj Value VR351 SW P 6 5 H t 0 5 H 1 Play back the alignment tape 2 Set the tracking control position to the center by pressing CHANNEL buttons t and simultaneously 3 Adjust VR351 SW P so that the width of T becomes 6 5 H 5 1 as shown in Fig 2 1 3 WS SWP T 6 5H tO 5H 0 5H N h u Front edge of vertical sync signal f t Rise RF SW PULSE Fig 2 1 3 lo ...

Page 11: ... 2 1 Relay Jig VHJ 0066 7 wire flat cable for VP 1 PWB assembly ALIGNMENT TAPE COLOR BAR SIGNAL WPV TCS bite Iv PP H Sync Signal Color bar signal waveform VHJ 0008 WPV TCP 75 Fig 2 2 1 Color bar pattern VHJ 0008 on monitor TV Fig 2 2 2 RELAY JIG Connect the flat cable end from the cylinder assembly to the VP 1 PWB assembly using the relay jig to provide simple repairing of the VP 1 PWB assembly as...

Page 12: ... side Fig 2 3 1 Note Set the following remote control button to the positions indicated below before making following adjustments I REMOTE CONTROL BUITON I POSITION I TAPE SPEED SP INPUT AV I AUDIO I LR I 2 3 3 SEPARATION ADJ Measuring Point AUDIO OUTPUT terminal EURO pin3 Lch MeasuringEquipment Audio Multiplex TV signal generator Oscilloscope Low path filter 15 kHz 48 dB oct Adj Condition E E mod...

Page 13: ...terminal Connect the VHF or UHF antenna to the VHFIUHF antenna input terminal Receive the middle electrical field 70 dBp 90 dB of the VHF or UHF channel and slowly turn the VR RF AGC from the point where snow noise is present to the point where it just disappears from the monitor TV Confirm by monitor TV that there is no beat and saturation S N is best point when receiving any TV channel 2 5 CHECK...

Page 14: ...0 LOCATION PA8TSt 20210 OR OR 20300 OR 20310 20400 20410 20600 20700 30300 30400 30500 30600 30700 30800 30900 31100 31700 31800 40100 40200 40300 50100 50110 50200 50210 5050A 5050B 5050C 5060A 4120158900 4120158504 4120215306 6131750661 6131716896 4120487505 6131519701 4120454606 6131522749 6131522756 6131603356 6131520295 6131519411 6131520318 6131606166 6131592193 6131636996 6131520189 6131518...

Page 15: ...160 4120487505 SPECIAL SCREW 2 6X4 10200 4120468304 SPECIAL SCREW 2 6X8 LOCATK N 10700 10720 10800 10810 20500 20510 20800 31000 31200 31300 31400 31500 31600 40400 5030A 5030B 5030C 5040A 5040B 5040C 60100 60200 60300 60400 60500 60600 60610 60700 60800 60810 70500 OR 70510 PARTSW 6131675926 4120488007 6131658523 4120468007 6131604186 4111091605 6131519039 6131520165 6131590991 6131590847 6131520...

Page 16: ...INET CHASSIS PARTS CH I 4111370007 CH 2 4110217907 CH 3 6131783829 CH 4 4120525108 CH 5 4120289406 CH 6 6131730632 CH 7 6131602885 CH 8 6131773165 CH 10 6131785151 CH 10 6131783751 CH I 1 6450190070 CH 12 6131769892 CH 12 6131693777 CH 14 6131741522 CH 15 6131783287 CH 15 6131786929 CH 16 6131530478 CH 17 6131769328 CH 19 6131769335 CH 20 6131211001 CH 21 6131674059 CH 22 4110011901 SCRL TPGBIN3XI...

Page 17: ...S 4050035708 TR 2SA131 8 T 4050035807 TR2SA131 8 U 4050180002 TR 2SC3331 S 4050180101 TR 2SC3331 T 4050180200 TR 2SC3331 U 4050180002 TR 2SC3331 S 4050180101 TR 2SC3331 T 4050180200 TR 2SC3331 U 4050293504 TR DTC144EK 4050066702 TR 2SA984 F 4050067204 TR 2SA984K F 4050000508 TR DTAI 14ES 4050293504 TR DTC144EK 4050180101 TR 2SC3331 T 4050180200 TR 2SC3331 U 4050005305 TRDTC143TK NEWZEAlAND ONLY 40...

Page 18: ... L2022 6450207396 INDUCTOR 180U K L2373 6450036934 INDUCTOR IOOU J OR 6450037634 INDUCTOR 1OOU J L3001 6450093791 CORE BEAD L3003 6450093791 CORE BEAD L3301 6450014550 INDUCTOR 10U K OR 6450037900 INDUCTOR IOU K L3304 6450063886 INDUCTOR l U K AUSTRALIA ONLY OR 6450053856 INDUCTOR l U M AUSTRALIA ONLY L3305 6450015441 INDUCTOR 2 2U K NEWZEALAND ONLY OR 6450053887 INDUCTOR 2 2U M NEWZEALAND ONLY L5...

Page 19: ...25V O l F Z 5 5V 0 01 U K 50V NEWZEAL4ND ONLY 56P J 50V LOCAllON PARTStIKI C3040 4030095807 C3041 4030095807 C3042 4030095807 C3043 4030095807 C3086 4030011609 C3301 4031079905 C3302 4031079905 C3302 4031348100 C3303 4030247206 C3307 4030680409 C3314 4031892405 C3315 4030683608 C3316 4031677002 C3318 4030115000 C3320 4030307009 C3324 4031219509 C3325 4030680409 C3404 4031938905 C3501 4030709803 C3...

Page 20: ...WZEALAND ONLY MT GIAZE 33K JA l 10W AUSTRALIA ONLY MT GLAZE 6 8K JA l 10W NEWZEALAND ONLY MT GLAZE 18K JA l 10W AUSTRALIA ONLY LOCAllON PARTSNO R2305 4010387700 R2306 4010379309 R2306 4010387700 R2307 4010375400 R2308 4010375400 R2309 4010386406 R2310 4010386406 R2313 4010375004 R2314 4010375004 R2322 4010232703 R2323 4010382200 R2324 4010382200 R2325 4010144006 R2327 4010163700 R2329 4010381005 R...

Page 21: ...N 2 7 JA l 4W CARBON 1 8K JA l 4W CARBON 3 3K JA l 4W CARBON 8 2K JA I14W CARBON 3 3K JA l 4W MT GLAZE 120 JA l 10W MT GLAZE 0 000 ZA l 10W FUSE 250V 2 5A FUSE 250V 2 5A PROTECTOR IC 0 8A 50V PROTECTOR l 25A 125V JACK RCA 2 JACK RCA JACK RCA 2 JK234 6450124006 JACK RCA 2 OR 6450069291 JACK RCA JK239 6450087608 JACK RCA 2 OR 6450208928 JACK RCA 2 OR 6450069314 JACK RCA MISCELLANEOUS 6130538048 FIXE...

Page 22: ... R6301 R6303 R6304 R6305 R6306 R6307 R6308 R6311 R6312 R6313 6131769892 AUSTRALIA ONLY CONNECTORS 6450030925 PLUG lIP NS P AUSTRALIA ONLY SEMICONDUCTORS 4050930607 TRKSC2785 Y AUSTRALIA ONLY 4050118401 TR2SC1740S Q AUSTRALIA ONLY 4050998508 TR2SC4640S AUSTRALIA ONLY 4050118500 TR2SC1740S R AUSTRALIA ONLY 4050998607 TR2SC4640T AUSTRALIA ONLY INTEGRATED CIRCUITS 4093706504 ICTDA9840 AUSTRALIA ONLY 4...

Page 23: ... NEWZEALAND ONLY CERAMIC 220P J 50V NEWZEALAND ONLY ELECT 10U M 16V NEWZEALAND ONLY CERAMIC 0 1 U Z 25V NEWZEALAND ONLY ELECT 1U M 50V NEWZEALAND ONLY CERAMIC 0 1 U Z 25V NEWZEALAND ONLY CERAMIC 0 01 U K 50V NEWZEALAND ONLY ELECT 10U M 16V NEWZEALAND ONLY MT POLYEST 0 33U J 50V NEWZEALAND ONLY CERAMIC 0 022U K 50V NEWZEAUND ONLY CERAMIC 47P J 50V NEWZEAL4ND ONLY CERAMIC 47P J 50V NEWZEALAND ONLY C...

Page 24: ...Aug 97 45o NS Pmted m Japan Slqbwilo SANYO Electric Co Ltd Osaka Japan ...