SERVICE MANUAL DVD DIGITAL CINEMA SYSTEM MB040 2003 TH-A85 Area suffix B ------------------------------- U.K. E ----------- Continental Europe EN ------------ Northern Europe TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
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SPECIFICATION Center Unit Audio Audio Input Sensitivity/Impedance (1 kHz), Total Harmonic Distortion 0.01% Analog input AUX IN 360 mV/47 kΩ Digital input* 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). Video Color System Horizontal Resolution...
SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across...
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1.5 Safety Precautions (U.K only) (1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con- tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace- ment parts must be identical to those used in the original circuits.
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Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.6.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
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Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam. procedures other than those specified herein may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure.
SECTION 3 DISASSEMBLY Main body section 3.1.1 Removing the top plate Top plate (See Fig.1) (1) From the top side of the main body, remove the four screws A attaching the top plate. (2) Remove the top plate from main body. Fig.1 3.1.2 Removing the rear cover (See Figs.2 and 3)
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3.1.4 Removing the front panel assembly Main board Front panel (See Figs.5 and 6) assembly • Prior to performing the following procedures, remove the top plate. (1) From the top side of the head phone board, remove the three screws G attaching the front panel assembly. (See Fig.5) CN412 (2) Disconnect the card wires from the connectors...
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3.1.6 Removing the DSP board (See Figs.9 and 10) • Prior to performing the following procedures, remove the top plate and rear cover. (1) From the top side of the DSP board, disconnect the card wires from the connectors CN401 on the DSP board.
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3.1.8 Removing the main board (See Fig.12) CN408 CN412 CN901 • Prior to performing the following procedures, remove the top CN902 plate, rear cover, rear panel, DVD mechanism, DSP board and tuner. (1) From the top side of the main board, disconnect the card wires from the connectors CN408 CN412...
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Front panel assembly section • Prior to performing the following procedures, remove the top plate and front panel assembly. 3.2.1 Removing the FL board (See Figs.1 and 2) (1) From the inside of the FL board, disconnect the wire from the connector CN502 on the volume board.
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DVD mechanism section • Prior to performing the following procedures, remove the top plate and rear cover, and remove the DVD mechanism assembly. 3.3.1 Removing the tray (See Figs.1 and 2) (1) From the left side of the DVD mechanism assembly, push Tray the slide cam in the direction of the arrow 1 and then pull out the tray in the direction of the arrow 2.
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3.3.4 Removing the clamper base Boss d Clamper base (See Fig.4) Section e (1) From the top side of the DVD mechanism assembly, re- move the four screws A attaching the clamper base. (2) Remove the clamper base from the bosses d of the loading base in an upward direction, remove the clamper base from the sections e while sliding it in the direction of the ar- row.
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3.3.6 Removing the motor DVD mechanism assembly (See Fig.6) Pulley gear • Prior to performing the following procedures, remove the clamper base and tray drive board. (1) From the top side of the DVD mechanism assembly, re- move the belt of the pulley gear. Note: Take care not to attach grease on the belt.
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3.3.8 Removing the DVD pickup unit DVD pickup unit Section h (See Figs.8 to 10) • Prior to performing the following procedures, remove the DVD Section i servo board, clamper base and DVD traverse mechanism as- sembly. (1) From the top side of the DVD traverse mechanism assem- Shaft bly, remove the screw E attaching the plate and torsion spring.
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3.3.10 Removing the spindle motor board Spindle motor board (See Figs.13 and 14) • Prior to performing the following procedures, remove the DVD Remove the solders. servo board, clamper base and DVD traverse mechanism as- sembly. (1) From the top side of the DVD traverse mechanism assem- Feed motor bly, remove the feed motor wire that is soldered to the spin- wire...
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3.3.11 Removing the feed motor Remove the solders. Spindle motor board (See Figs.15 to 17) • Prior to performing the following procedures, remove the DVD servo board, clamper base and DVD traverse mechanism as- sembly. Feed holder (1) From the top side of the DVD traverse mechanism assem- assembly bly, remove the feed motor wire that is soldered to the spin- dle motor board.
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Speaker section 3.4.1 Removing the amplifier assembly (See Figs.1 and 2) (1) From the rear side of the speaker main body, remove four screws A attaching the heat sink cover. (See Fig.1) (2) Remove the nine screws B attaching amplifier assembly. (See Fig.2) (3) Move the amplifier assembly backward and disconnect the Amplifier...
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3.4.2 Removing the rear panel (See Fig.3) • Prior to performing the following procedures, remove the am- Rear panel plifier assembly. (1) Remove the four screws C, twelve screws D and screw E attaching the rear panel. (2) Take out the rear panel from the amplifier assembly. Fig.3 3.4.3 Removing the SP terminal board (See Figs.4 and 5)
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3.4.4 Removing the mother board assembly Mother (See Fig.6) board • Prior to performing the following procedures, remove the am- plifier assembly, rear panel and SP terminal board. (1) From the top side of the amplifier assembly, disconnect the card wires from the connectors CN151 on the mother board.
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3.4.6 Removing the power amplifier board (A) P.TR holder (A) (See Figs.8 and 9) • Prior to performing the following procedures, remove the am- plifier assembly, rear panel, SP terminal board, mother board assembly and mother board. (1) Remove the three screws J attaching the heat sink to the power amplifier board (A).
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3.4.8 Removing the power transformer (See Fig.11) • Prior to performing the following procedures, remove the am- plifier assembly, rear panel, SP terminal board and mother board assembly. (1) Remove the tie band, and remove the four screws L attach- ing the power transformer.
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3.4.10 Removing the speaker (See Figs.14 and 15) Speaker (1) From right side of the speaker main body, remove the eight screws M attaching the speaker. (See Fig.14) (2) Take out the speaker from the speaker main body. (See Fig.15) (3) Disconnect the wires from the terminal of the speaker.
SECTION 4 ADJUSTMENT TEST mode (See Fig.1) (1) This model is provided with a test mode for use in production QC, service and repair. (2) Before executing the test mode, if a tray is not completely close up, make power to standby from on to close up the tray. (3) After confirm that a tray is completely close up, pull off the power plug.
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VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB040) Printed in Japan...
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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.
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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.
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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...
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<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...
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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)
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PARTS LIST [ TH-A85 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix B ------------------------------- U.K. E ----------- Continental Europe EN ------------ Northern Europe - 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)
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Exploded view of general assembly and parts list Block No. Power board FL board Volume board Head phone board Switch board...
Speaker assembly and parts list Block No. (Subwoofer) Amplifier board (A) Amplifier board (B) Speaker terminal board Mother board...
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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) 3 QQT0417-002 POWER TRANSF LV31723-001A TRANS BRACKET E406309-002 SPACER (x4) QYSDSTL4010E TAP SCREW M4 x 10mm(x4) F 101 3.15A ...
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 7006930801 SCREW (x4) 7008730801 SCREW (x24) 2810006901 SPACER (x4) 5700066201...
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 9000005361 FOOT (x2) 6000197391 RATING LABEL 3110006801 DUCT 1030004001 TERMINAL...
DVD mechanism assembly and parts list Block No. EXL-V73-1YPC 12.0mm 0.2mm 33 13 65.2mm 0.2mm Grease CFD-4007ZYZ JVG-31N PG-641 1401C...
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DVD mechanism Block No. [M][J][M][M] Symbol No. Part No. Part Name Description Local LE20520-002A MECHA BASE LE20516-002A SPINDLE BASE QYSDST2605M TAP SCREW M2.6 x 5mm(x3) LE30909-001A FEED HOLDER ASSY QAR0165-001 FEED MOTOR LV41510-001A FEED GEAR T QYSPSPU2040M SCREW M2 x 4mm(x2) LV41512-002A FEED GEAR E LV41517-003A...
DVD loading base assembly and parts list Block No. 21 BACK SIDE FMU-DV31-1M Grease =JVG-31N =JVS-1003 BACK SIDE 3-11...
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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...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C4073 NCB31CK-104X C CAPACITOR 0.1uF 16V K C6903 NCB31HK-103X C CAPACITOR 0.01uF 50V K C4074 NCB31HK-561X C CAPACITOR 560pF 50V K C6904 NCB31HK-103X C CAPACITOR 0.01uF 50V K...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R4473 NRSA63J-471X MG RESISTOR 470Ω 1/16W J R6106 NRSA63J-330X MG RESISTOR 33Ω 1/16W J R4474 NRSA63J-471X MG RESISTOR 470Ω 1/16W J R6107 NRSA63J-390X MG RESISTOR 39Ω...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local Q501 KRC102S-X DIGI TRANSISTOR Q401 KRA104S-X DIGI TRANSISTOR Q502 KRC102S-X DIGI TRANSISTOR Q402 KRC107S-X DIGI TRANSISTOR Q511 KRC102M-T DIGI TRANSISTOR Q403 KRC107S-X DIGI TRANSISTOR Q521 KRC111M-T...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C1125 NCB31CK-223X C CAPACITOR 0.022uF 16V K C2575 NCB31HK-102X C CAPACITOR 1000pF 50V K C1126 NCB31CK-223X C CAPACITOR 0.022uF 16V K C2576 NCB31HK-102X C CAPACITOR 1000pF 50V K...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R483 NRSA63J-105X MG RESISTOR 1MΩ 1/16W J R2528 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J R491 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R2529 NRSA63J-103X MG RESISTOR 10kΩ...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local Q531 KTC3199/GL/-T TRANSISTOR R421 QRJ146J-100X UNF C RESISTOR 10Ω 1/4W J Q532 KTC3199/GL/-T TRANSISTOR R431 QRJ146J-100X UNF C RESISTOR 10Ω 1/4W J Q545 KRC102M-T DIGI TRANSISTOR...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local FC158 QNG0003-001Z FUSE CLIP C3202 QCBB1HK-471Y C CAPACITOR 470pF 50V K HS151 QZW0115-001 HEATSINK C3203 QETN1HM-475Z E CAPACITOR 4.7uF 50V M J401 QND0118-001 DIN CONNECTOR C3204...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R3108 QRE141J-153Y C RESISTOR 15kΩ 1/4W J Quad 2 input OR IC521 MM74HCT32MTC-X gate R3109 QRE141J-473Y C RESISTOR 47kΩ 1/4W J IC522 74LCX32MTC-X IC(DIGITAL) OR gate...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C311 NCB31HK-561X C CAPACITOR 560pF 50V K C549 NEA70GM-476X E CAPACITOR 47uF 4V M C312 NCB31HK-561X C CAPACITOR 560pF 50V K C550 NCB31CK-104X C CAPACITOR 0.1uF 16V K...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R224 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R578 NRSA63J-471X MG RESISTOR 470Ω 1/16W J R251 NRS125J-R47X MG RESISTOR 0.47Ω 1/2W J R579 NRSA63J-471X MG RESISTOR 470Ω...
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DVD loading switch board Block No. [0][7][0][0] Symbol No. Part No. Part Name Description Local QGF1016F3-06 CONNECTOR FFC/FPC (1-6) QSW0910-002 SWITCH QSW0910-002 SWITCH 3-24...
Packing materials and accessories parts list Block No. 3-26...
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Packing and accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local LVT1025-003C INST BOOK THA85B LVT1025-004C INST BOOK GER,FRE,DUT THA85E LVT1025-005B INST BOOK SWE,FIN,DAN THA85EN THA85E, A 2 QMPL060-183-JD POWER CORD(EU) 1.83m BLACK THA85EN QAM0381-001 SYSTEM CABLE LV43454-001A SPK CORD ASSY...