Sanyo VHR-757G Service Manual page 28

VHR-757G,VHR-757EX
VHR-757NL,VHR-777EV
VHR-777EX,VHR-797SP
BLOCK DIAGRAMS,CIRCUIT DIAGRAMS &
PRINTED WIRING BOARDS
TABLE OF CONTENTS
Page
1. OVERALL WIRING, MECHANISM CONNECTION & BLOCK DIAGRAMS
OVERALL: WIRING tase. ii scecetcivcsevthez te seecstascheevth Bevel alts at, caeivicaitedavesdid i abecenbinnecceteaes luba st balheneeeiip ania 1
MEGHANISM CONNECTION :c0.cctscescessesssscibecsscancivscigteubececeesscddesaatesaeecgerectonecutepsbestcnsreapedefesesudcastoeseaseaudnvsteaeess 3
VIDEOCUR CUNT: 22. sicz afc Aa car en catescstnt Ne scat alias a ccie Sats anadues Shad pacha baron Basst sins vensdinn cbcavedeabebss futhatteendeat ialvertiedandor 4
SYSTEM CONTROL & SERVO CIRCUIT 0.0... cecsccssessescesesssceseseeseseseaseeeceneessssseessnsensnensesesassessnsnessesersnsenseseags 7
AUDIO CIRCUIT ctecice soeavcaevsa bec csesea naa ouse os catches ae Teese ca easel Benen se eee cto cete Abgaadsentwetasecdiyaaeasaaets 10
TERMINAL & INPUT / OUTPUT SELECTOR CIRCUIT (VHR-797SP ONLY) ..... cece ceeeeteeeseteeeneeeees 13
2. CIRCUIT DIAGRAMS & PRINTED WIRING BOARDS (P.W.B.)
CP-1 BOARD (VA-A) VIDEO & AUDIO (VHR-797SP ONLY) ........:ceeeseseeseressecenesseseseesesessseesaesseeeesssessseeeaneees 16
CP-1 BOARD (VA-A) VIDEO & AUDIO (EXCEPT VHR-797SP) ..........cccccsessssessssecsseeseseeneesrseesnensenseseesseasenees 19
VIDEO CIRCUIT WAVEFORMS ....:.::.sciccecsssaececescactcescoctscscsucuveuccevssncuavacca stavecvenessees ses coegntabeqstienacusbnnbediceastecsenenss 21
VP-1 BOARD: VIDEO. PRE-AMP j....:c:ccscccsccccccccssciesscacevecevecvenecveveceseeeesdasandveescevenusneectessenncensescciuiaseesstaasaasbecanis 22
MP1 PW acccecscies caseststescducecdsge Bios les teats Deli beste sey aenteaea a aatadveetians cafeaep ales ctaevens cnet eceatdetes Sahat eaaaeoaetteats 24
AD-5 BOARD DMSS (VHR-797SP ONLY) ....... cc eseeseeseeeeesesseeseseesseuesensecsseesssenesessacasceasessesseseesassaeasesaneasnanegs 25
AD-5 P.W.B. (VHR-797SP ONLY) ....... eee ceseeteeteees a E Asda Seances Leg heeatehedseensatecceceluneegdnvesdisacateessedteverese 27
CP-1 BOARD (AD-A) HIF! AUDIO ( VHR-797SP ONLY) .0.... cece ceceseeeceecee cesses ceseeneaeseesucssseessessesesseeueseeseenees 28
CP-1 BOARD (AD-A) HIFI AUDIO ( EXCEPT VHR-797SP) .........:ccecsesseseeseeeeeseeseausesesensnsssessansesersnetsenenenens 31
SERVO CIRCUIT WAVEFORMS. ............cccccstecsesseeeeeeeeeeseeseneseeeecanecsessnenaessceeeecsseesuesuscseesdssssssesseasenssuanenseaseneens 34
GP=1-BOARDASV-A): SERVO \scseccccstvatts fevavacceccsh hans cactestaubendadevea cl dastetes Gl, avdetesieedeedsetdespinsns Cots vewaesseinccetoetaat le 35
IC301 SYSTEM CONTROL, TIMER & TUNING CONTROL MPU PIN FUNCTIONS TABLE ...........::2ccesesssesees 37
CP-1 BOARD (SY-A) SYSTEM CONTROL, TIMER & TUNER (VHR-757G,VHR-757NL & VHR-777EV)....... 38
CP-1 BOARD (SY-A) SYSTEM CONTROL, TIMER & TUNER (VHR-757EX & VHR-777EX) ......2:cecceccseseeeees 40
CP-1 BOARD (SY-A) SYSTEM CONTROL, TIMER & TUNER (VHR-797SP ONLY) .......cescceeseteeeeeeeneesenens 43
CRA 1 PW Bo ss ies ani cabeces vadiseadaced us Shdda sevaulond cpa uucias Sasa habe acto antenashsacde say sad cvasaas cabacaatavacage nahi adasiuades sateen veeaatasts 46
TN-3 BOARD MTS DECODER (VHR-757G , VHR-757NL & VHR-777EV) ......c.cccsceseeseseseeseseeerseesnereereneseeeees 49
TN-3 P.W.B. (VHR-757G , VHR-757NL & VHR-777EV) .......cccceceeeteeeeeereeteeeeees s e i s c t a i c d Hiaveloutd nat tvdevsveswtaveasncncdts 49
TM-8 BOARD VPS (VHR-757G ONLY) ........:eecceeseeceseeneesesseeessusessnsaesesenescsnesssesessneeseseancauseaeecaecneecsuesaasaesesensees 50
TM-8 P.W.B. (VHR-757G ONLY) ........ccecccecceseceeseeceneneneeseenesessuseuansusceucaecseseausasenseesseseeceneesseenseceeseeeaenseeenensaeeaees 50
TM-9 BOARD PDC/VPS (EXCEPT VHR-757G) ......:cceesecceseeseseseeseeseeeseseecseseesssassnsasuesseneaseesecaeenessesseensenesseses 51
TM-9.P.W.B; (EXCEPT VAR-757G) .csc.0ctecheciccticcicccsccnctaesects Medica sadsig scoesduetadssaedsbaancesscastacaeassacrissctenseasesdasanseanie 51
A7101 DISPLAY (FLD) GRID/ANODE ASSIGNMENT DRAWING & TABLE ...........ccccccsssesscsseeseeeeesserereeneees 52
TM-1 P.W.B.(VHR-777EV, VHR-777EX&VHR-797SP) 00. ceceeeeeeeceeeseesetensecseesenenseseresseeneeseeneeeneeseeeneensaseetetes 53
TM-1 P.W.B.(VHR-757G, VHR-757 EX&VHR-757NL) oe. eee esseeeeeeeeeeneeeeeaessseeneeneanenersecenesseeseesseesaeseenetentesneages 53
TM-1 BOARD OPERATION KEY & DISPLAY(VHR-757G, VHR-757EX&VHR-757NL) .......cccsescseceetscseenreeenes 53
TM-1 , TB-2 BOARDS OPERATION KEY & DISPLAY(VHR-777EV,VHR-777EX&VHR-797SP) ...... cece 54
TB-2 P.W.B. (VHR-797SP ONLY) ..00...eececeeeeeereeseeceeeeseseeeesscsccessseseseseneeseenscaecsansacaecssasassenesseeneseessussaseesnesanenss 55
TN-6 BOARD MTS & NICAM DECODER (VHR-797SP ONLY) ..........esscssesesessescesecsssessereecassaeesecnarsessesnecaenees 56
TN-6 P.W.B. (VHR-797SP ONLY) ........:ececeseseeseeeceeceneeseseuseseseneeseseecsevstasessesssesesaavarssseseeseseessesessaeaeeseansenseaeeaeas 58
TN-5 P.W.B. (VHR-757EX & VHR-777EX) ......2scecccecceeccecectceeeteneereceeeeeaeeeee sees saeseeesaeneaseenssussesseseeneaeesseseeeseeseetes 58
TN-5 BOARD NICAM DECODER (VHR-757EX & VHR-777EX) 0.0... cece cesceseeeereneenereeeeseeseasesseeseeenaesaeeneneeeees 59
CP-1 BOARD (PW-A) POWER SUPPLY ...0...eocee sec ceceeeeeer cere reeeeeeseesaeseaassueceetssesseeeseesameaseatensesseepesnsanasenaenes 61
MP4H/G5,EX5,NL5,EV3,EX3,SP 74N
REFERENCE No.SM531579