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JVC TH-A85 Series Service Manual
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JVC TH-A85 Series Service Manual

JVC TH-A85 Series Service Manual

Dvd digital cinema system
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SERVICE MANUAL
DVD DIGITAL CINEMA SYSTEM
1
2004
MB135
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
TH-A85
TABLE OF CONTENTS
Area Suffix
UF -------------- China
No.MB135
2004/1

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Summary of Contents for JVC TH-A85 Series

  • Page 1 SERVICE MANUAL DVD DIGITAL CINEMA SYSTEM MB135 2004 TH-A85 Area Suffix UF -------------- China TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Center Unit (XV-THA85) Audio Audio Input Sensitivity/Impedance (1 kHz), Total Harmonic Distortion 0.01% NOTE: This value is measured at System cord CONNECTOR for reference. Analog input AUDIO IN VCR 360 mV/47 kΩ Digital input* DIGITALIN (DBS):Optical -21 dBm to -15 dBm (660 nm ±30 nm) * Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency - 32 kHz, 44.1 kHz, 48 kHz).
  • Page 3 SECTION 1 PRECAUTION Please refer to "TH-A85 No.MB106" about this section. SECTION 2 SPECIFIC SERVICE INSTRUCTIONS Please refer to "TH-A85 No.MB106" about this section. SECTION 3 DISASSEMBLY Please refer to "TH-A85 No.MB106" about this section. SECTION 4 ADJUSTMENT Please refer to "TH-A85 No.MB106" about this section. SECTION 5 TROUBLESHOOTING Please refer to "TH-A85 No.MB106"...
  • Page 4 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB135) Printed in Japan...
  • Page 5 SCHEMATIC DIAGRAMS DVD DIGITAL CINEMA SYSTEM TH-A85 CD-ROM No.SML200311 Area suffix B ------------------------------- U.K. E ----------- Continental Europe EN ------------ Northern Europe Contents Block diagrams Standard schematic diagrams 2-14 to 19 Printed circuit boards No.MB040SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/11...
  • Page 6 In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.
  • Page 7 Block diagrams <Main body section> Volume board FL board Main board DATA IN, J4403 SCART-LIN INITIAL, AUDIO L IN IC501 X501 RESET, SCART-RIN IC492 AUDIO R IN KEY2 CLOCK DISPLAY Cb OUT 8MHz TV-SOUND MICOM Y2 OUT /TUNER TU-L/R S551 to S553 TUNER Cr OUT SELECT SW...
  • Page 8 <DVD servo section> <SP-PWA85 subwoofer section> Speaker terminal Mother board Amplifier board (A) DVD servo board board Main board 49,50 CN406 J401 LFE,FR,FL 53,54 FCIN SL,SR,C 57 to 60 IC101 Mini Din SLIN 62,63 SRIN CONN. FRONT END P.ON PROCESSOR IC201 D3.3V D3.3V...
  • Page 9 Standard schematic diagrams <Main body section> Power supply section T901 C951 100p/50 QQS0097-001 Q951 CP951 2SC3576-JVC-T R951 ICP-N10-T D901 S1WB/A/60-4101 R952 D951 C960 C961 R901 C908 ERA18-04-T1 82/10 1.5/25 0.0033 C952 100p/1000 C907 C909 Q953 R953 P901 100p/1000 R954 KTA1267/YG/-T...
  • Page 10 System control section CN411 CN410 QGF1016C1-31 QGF1205C1-11 C4002 EP401 QNZ0136-001Z C4001 Q4921 KTC3203/OY/-T R4921 R4922 C4971 2.2K 0.01 R4833 B4019 IC491 C4922 KIA7805API D4831 100/10 1SS133-T2 D4921 MTZJ8.2C-T2 R4951 R4952 R4832 D4833 Q4951 1SS133-T2 KRA104S-X R4834 D4931 MTZJ8.2C-T2 Q4091 KTA1271/OY/-T R4835 R4831 D4834...
  • Page 11 Video output section C4472 330P R4472 J4403 QNZ0516-001 C4476 C4471 330P 4.7/25 R4474 SCART-RIN SCART-LIN R4471 R4476 AGND 180K R4481 C4475 C4443 R4475 4.7/25 R4473 A+12V 180K R4482 R4442 C4433 R4432 L4391 Q4482 KRC102S-X C4453 C4391 470/10 R4452 R4191 Q4481 Q4483 KRC102S-X KRA102S-X...
  • Page 12 FL display section Q501 Q502 C508 C513 DI501 QLF0119-002 C514 C509 R511 C506 C505 C531 R531 100/6.3 0.01/16 100K D511 C501 470p C502 470p R501 DATAIN R502 X501 CLOCK ILUMI_DIM R521 QAX0246-001Z R503 INITIAL Q521 C503 0.01/16 IC501 C511 MN101C35DKW 0.01/16 ILUMI_LED CN501...
  • Page 13 DSP section TP603 R418 C408 47/6.3 R419 CDTI C407 CCLK C411 0.1/16 0.1/16 IC401 IC408 74VHC00SJ-X C412 AK4527BVQP R415 TP607 C405 0.1/16 C403 47/6.3 R438 Q404 R420 C404 47/6.3 C406 0.1/16 TP604 TP608 C436 IC402 47/6.3 MM1613DN-X X401 DSP_RST C437 C433 NAX0385-001X C432...
  • Page 14 Audio input / output section LIN+ R2515 C2507 TP509 C2515 180p R2509 R2517 TP501 C2519 C2555 C2503 0.1/16 R2513 R2503 4.7/25 R2507 0.1/16 IC511 TP511 R2519 BA15218F-XE IC510 LIN- BA15218F-XE R467 C2517 C2513 C2553 5600p 1800p 5600p C2520 R2501 0.1/16 C2556 C2512 C2511...
  • Page 15 <DVD servo section> S3.3V D3.3V D1.8V DVD servo section 1/4 K301 K302 K303 K304 R341 5.6K C144 0.01/16 To DVD servo C145 CN101 section 2/4 QGF0522F1-30W DGND T2CD HDTYPE ODCIRQ2 F2CD R318 R319 ODCIRQ C347 T1CD C141 TP309 0.1/16 0.1/16 TP308 C115 0.1/16...
  • Page 16 DVD servo section 2/4 D3.3V R998 R995 D1.8V D3.3V To DVD servo section 3/4 K504 NQR0007-002X To DVD servo section 1/4 R505 R506 R507 C527 C524 47/4 47/4 D3.3V R508 K501 NQR0007-002X PWE0 IC505 K4S643232E-TC70 C511 0.1/16 47/4 C512 MD10 C501 MD11 0.1/16...
  • Page 17 DVD servo section 3/4 To DVD servo section 2/4 D3.3V D3.3V S3.3V D3.3V LADD16 CN502 QGB2027L1-26X IC509 C910 SST39VF160-9CEK IC512 LADD15 C904 0.1/16 74LCX373MTC-X R604 LADD14 LADD13 C906 0.1/16 LADD12 AD15 LADD6 LADD19 CN501 LADD11 AD19 C902 0.1/16 LADD10 AD14 AD18 LADD9 LADD5...
  • Page 18 DVD servo section 4/4 (Voltage value) 2-12...
  • Page 19 <SP-PWA85 subwoofer section> Subwoofer section STK413-420 IC301 IC201 STK413-490 R2502 R3502 C3105 C3205 C3305 C2105 C2205 C2305 R2501 R3501 R3106 0.22 C3206 C2206 R3305 R2106 R2305 3.3P 3.3P D2501 D3501 C3306 D2502 0.22 R2205 R3205 C2306 R3105 R2105 3.3P D3502 3.3P C3106 C2106...
  • Page 20 Printed circuit boards <Main body section> Main board (Main board) Q581 D581 (Power board) CN407 EP951 R581 CN408 R6301 Q957 C941 CN901 S581 D984 D960 C962 R6203 R6204 C6202 R6202 R977 IC951 B6003 CN411 R6206 C4701 Q4703 R4708 C977 R981 R980 C4703 IC601...
  • Page 21 DSP board Forward side Reverse side CN401 C1211 R1163 C1206 C462 R1164 C459 C454 C1179 C1178 C445 C458 C1176 C413 R461 C1177 C1221 R1169 R1138 R1201 R1167 R1137 C1227 R1131 IC158 R1134 R1141 C1209 R1132 R1139 C1207 C1128 R1202 C1126 R1170 C1127 C1204...
  • Page 22 Front board Forward side Reverse side (FL board) (FL board) C514 (Head phone board) CN502 C510 J571 C507 S571 C505 W571 (Head phone board) C572 W571 C513 S571 D511 J571 C512 D511 C513 Q502 C505 Q501 C514 CN502 2-16...
  • Page 23 <DVD servo section> DVD servo board Forward side Reverse side TP811 TP812 TP815 TP826 TP822 TP827 TP813 TP821 TP818 TP817 TP823 L501 TP836 TP825 TP824 TP816 TP819 TP820 CN503 CN502 TP832 TP814 C907 TPFG4 R583 TP914 TP907 TP831 C908 TP830 TP906 TP833 C902...
  • Page 24 <SP-PWA subwoofer section> (Speaker terminal board) Mother board (Mother board) C512 R522 C415 C416 R555 R151 D153 D535 D154 R152 L411 FC152 FC151 L412 C413 C411 CN503 CN504 CN501 R510 R512 D505 FC156 FC155 Q511 C414 C412 R548 R503 R519 RY401 Q501 R502...
  • Page 25 Amp. board ( Amplifier board (A) ) ( Amplifier board (B) ) R2503 R2506 C2501 D2504 C2504 R2507 C2503 D2502 R2504 R2511 R2510 C3301 R3312 R2106 R2109 R3301 D2101 C3201 R2107 R2108 R3208 R3201 R3212 R2207 R2208 C3101 D3201 D2201 R3209 R2209 R3101...
  • Page 26 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MB040SCH)

  • Page 27: Table Of Contents

    PARTS LIST [ TH-A85 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix UF ---------------------------- China - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 Speaker assembly and parts list (Subwoofer) (Block No.M2) 3- 7 Speaker assembly and parts list (Front speaker) (Block No.M6)

  • Page 28: Exploded View Of General Assembly And Parts List (Block No.m1)

    Exploded view of general assembly and parts list Block No. Power board FL board Volume board Head phone board Switch board...
  • Page 29 Main board Power board FL board DSP board...
  • Page 30 General assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local LV10787-003A FRAME LV34217-004A LENS LV42851-006A FL SCREEN LV34219-003A LIGHT LENS LV30225-0F4A SPACER LV43610-001A SPACER LV21485-003A FRONT ORNAMENT LV34213-002A PUSH BUTTON(L) LV34214-002A PUSH BUTTON(R) QYSBSF2610Z SCREW 2.6mm x 10mm(x4) LV34215-002A P BUTTON(POWER) LV34220-003A...

  • Page 31: Speaker Assembly And Parts List (Subwoofer) (Block No.m2)

    Speaker assembly and parts list Block No. (Subwoofer) Amplifier board (A) Amplifier board (B) Speaker terminal board Mother board...
  • Page 32 Speaker (Subwoofer) Block No. [M][2][M][M] Symbol No. Part No. Part Name Description Local LV10784-010A REAR CHASSIS QYSBSF4010Z TAP SCREW M4 x 10mm(x6) QQT0404-004 POWER TRANSF LV31723-001A TRANS BRACKET E406309-002 SPACER (x4) QYSDSTL4010E TAP SCREW M4 x 10mm(x4) QMF51W2-3R15-J8 FUSE 3.15A AC250V LV42032-001A AC BRACKET QMFZ051-8R0-J8...

  • Page 33: Speaker Assembly And Parts List (Front Speaker) (Block No.m6)

    Speaker assembly and parts list Block No. (Front speaker) Speaker (Front speaker) Block No. [M][6][M][M] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local LV43426- 9000009001 FOOT 001A(x16) 6000197381 RATING LABEL (x4) 5700066201 TOP COVER (x4) 6100070611...

  • Page 34: Speaker Assembly And Parts List (Center Speaker) (Block No.m7)

    Speaker assembly and parts list Block No. (Center speaker) Speaker (Center speaker) Block No. [M][7][M][M] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local 7007840606 SCREW (x8) 9905000701 NET ASSY LV21497-001A BADGE(FRONT/ 3110006801 DUCT 5900020901 LV43427-001A...

  • Page 35: Dvd Mechanism Assembly And Parts List (Block No.mj)

    DVD mechanism assembly and parts list Block No. EXL-V73-1C 12.0mm 0.2mm 33 13 65.2mm 0.2mm Grease CFD-4007ZYZ JVG-31N PG-641 1401C DVD mechanism Block No. [M][J][M][M] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local QYSDST2605M TAP SCREW M2.6 x 5mm...

  • Page 36: Dvd Loading Base Assembly And Parts List (Block No.mn)

    DVD loading base assembly and parts list Block No. FMU-DV31-1M 21 BACK SIDE Grease =JVG-31N =JVS-1003 BACK SIDE 3-10...
  • Page 37 DVD loading base Block No. [M][N][M][M] Symbol No. Part No. Part Name Description Local LV10454-007A-CK LOADING BASE QAR0164-001 MOTOR LV42087-002A MOTOR PULLEY QYSPSPU1730Z SCREW M1.7 x 3mm VKZ4777-003 MINI SCREW LV42209-001A BELT LV42084-002A PULLEY GEAR LV42085-002A MIDDLE GEAR LV42086-001A IDLE GEAR LV32514-002A SLIDE CAM LV42348-001A...
  • Page 38 PHOTO COUPLER IC953 KIA7805API PC902 PC123Y22FZ PHOTO COUPLER Q581 KRC102S-X DIGI TRANSISTOR C902 QFZ9075-683 MPP CAPACITOR 0.068uF AC275V M Q951 2SC3576-JVC-T TRANSISTOR C904 QCZ9079-102 C CAPACITOR 1000pF AC250V M Q952 KRA104S-X DIGI TRANSISTOR C905 QCZ9079-102 C CAPACITOR 1000pF AC250V M Q953...
  • Page 39 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C4301 QEKC1CM-476Z E CAPACITOR 47uF 16V M R962 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J C4311 NCB31CK-103X C CAPACITOR 0.01uF 16V K R964 NRSA63J-105X MG RESISTOR 1MΩ...
  • Page 40 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R4831 NRSA63J-153X MG RESISTOR 15kΩ 1/16W J S551 QSW0683-001Z PUSH SW R4832 NRSA63J-223X MG RESISTOR 22kΩ 1/16W J S552 QSW0683-001Z PUSH SW R4833 NRSA63J-123X MG RESISTOR 12kΩ...
  • Page 41 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local IC402 MM1613DN-X C466 NEA71CM-476X E CAPACITOR 47uF 16V M IC403 TC9446F-025 C467 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z IC404 LP61L1024S-12-X C493 NCB30JK-105X C CAPACITOR 1uF 6.3V K IC406 UPD784215AGC167...
  • Page 42 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C2592 NCB31HK-472X C CAPACITOR 4700pF 50V K R1140 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J C2594 NCB31HK-223X C CAPACITOR 0.022uF 50V K R1141 NRSA63J-102X MG RESISTOR 1kΩ...
  • Page 43 Block No. [0][4][0][0] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C531 QETN1HM-106Z E CAPACITOR 10uF 50V M C532 QCF31HZ-103Z C CAPACITOR 0.01uF 50V Z Q151 KTC3203/OY/-T TRANSISTOR C533 QCF31HZ-103Z C CAPACITOR 0.01uF 50V Z Q501 KRA104M-T...
  • Page 44 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local J403 QNB0161-002 SPK TERMINAL C201 NEA70JM-226X E CAPACITOR 22uF 6.3V M J404 QNB0162-002 SPK TERMINAL C203 NCB31CK-104X C CAPACITOR 0.1uF 16V K K401 QQR1277-001Z COIL C204 NCB31CK-104X...
  • Page 45 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C501 NCB31CK-104X C CAPACITOR 0.1uF 16V K R117 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J C506 NCS31HJ-150X C CAPACITOR 15pF 50V J R119 NRSA63J-2R2X MG RESISTOR 2.2Ω...
  • Page 46 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R421 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J K565 NRSA02J-0R0X MG RESISTOR 0Ω 1/10W J R422 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J K566 NRSA02J-0R0X MG RESISTOR 0Ω...
  • Page 47 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C2507 QCBB1HK-103Y C CAPACITOR 0.01uF 50V K R2510 QRZ9005-101X F.RES. I.M 100Ω C3102 QFVJ1HJ-473Z MF CAPACITOR 0.047uF 50V J R3101 QRE141J-103Y C RESISTOR 10kΩ 1/4W J C3103 QETN1HM-475Z E CAPACITOR...
  • Page 48 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local IC451 S-93C66AFJ-X Serial EEPROM C301 NCB31CK-104X C CAPACITOR 0.1uF 16V K IC501 NDV8601VWA-BE AV Decoder C302 NCB31CK-104X C CAPACITOR 0.1uF 16V K IC505 K4S643232F-TC70 C303 NCB31CK-104X C CAPACITOR...
  • Page 49 Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C541 NCB31CK-104X C CAPACITOR 0.1uF 16V K R217 NRSA63J-201X MG RESISTOR 200Ω 1/16W J C542 NCB31CK-104X C CAPACITOR 0.1uF 16V K R218 NRSA63J-221X MG RESISTOR 220Ω...
  • Page 50 Block No. [0][8][0][0] Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R565 NRVA63D-622X CMF RESISTOR 6.2kΩ 1/16W D R566 NRVA63D-132X CMF RESISTOR 1.3kΩ 1/16W D R570 NRSA63J-100X MG RESISTOR 10Ω 1/16W J QGF1016F3-06 CONNECTOR FFC/FPC (1-6)
  • Page 51 < MEMO > 3-25...
  • Page 52 Packing materials and accessories parts list Block No. P12 A1, A11, A12, A13 3-26...
  • Page 53 Packing and accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local LVT1025-012A INST BOOK CHI(PEKIN) QAM0381-001 SYSTEM CABLE QAM0236-001 VIDEO CABLE LV43454-001A SPK CORD ASSY QMPS230-183-JC POWER CORD 1.83m BLACK QAL0457-001 ANT.WIRE QAL0014-001 AM LOOP ANT RM-STHA55U REMOCON UNIT ------------ BATTERY...

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