PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39

TH-M55

SP-THM55F SP-THM55F SP-THM55F SP-THM55F

XV-THM55

Area suffix

J ----------------------------- U.S.A.

C -------------------------- Canada

SP-PWM55

No.MB075

2003/11

Chapters

Table of Contents

Summary of Contents for JVC TH-M55

Page 1: Table Of Contents
SERVICE MANUAL DVD DIGITAL THEATER SYSTEM MB075 2003 TH-M55 Area suffix J ----------------------------- U.S.A. C -------------------------- Canada SP-THM55C SP-THM55F SP-THM55F SP-THM55F SP-THM55F XV-THM55 SP-PWM55 TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
Page 2 SPECIFICATION Center unit Audio section Total Harmonic Distortion 0.02% NOTE : This value is measured at System cord CONNECTOR for reference. Audio input sensitivity/ Analog input AUDIO IN (VCR) 290 mV/47 kΩ Impedance (at 1 kHz) Digital input* DIGITAL IN (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) Video section...
Page 3: Precaution
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...
Page 4 Preventing static electricity 1.5.1 Grounding to prevent damage by 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. 1.5.2 About the earth processing for the destruction prevention by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Page 5 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is 1.CLASS 1 LASER PRODUCT able to function. 2.DANGER : Invisible laser radiation when open and 6.CAUTION : Use of controls, adjustments or inter lock failed or defeated. Avoid direct exposure to performance of procedures other than those specified beam.
Page 6 Importance administering point on the safety <Main body section> Power supply board (Forward side) <SP-PWM55 subwoofer section> Speaker terminal board (Forward side) Mother board (Forward side) Caution: For continued protection against risk of fire, replace only with same type 1.6A/125V for F901, 6.3A/125V for F101, 8A/125V for F153 and F154.
Page 7: Specific Service Instructions
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB075)1-7...
Page 8: Disassembly
SECTION 3 DISASSEMBLY Main body section Metal cover 3.1.1 Removing the metal cover (See Figs.1 to 4) (1) From the right and left sides of the main body, remove the four screws A attaching the metal cover. (See Figs.1 and (2) From the back side of the main body, remove the three screws B attaching the metal cover.
Page 9 3.1.2 Removing the front panel assembly Card wire Card wire (See Figs.5 and 6) • Remove the metal cover. CN407 (1) From the top side of the main body, disconnect the parallel Main board wires from the connectors (CN408, CN409) on the main board.
Page 10 3.1.3 Removing the DVD changer mechanism assembly DVD changer mechanism (See Fig.7) assembly Main board • Remove the metal cover. Boss d • Remove the front panel assembly. (1) From the top side of the main body, disconnect the card wires from the connectors (CN405, CN415) on the main board.
Page 11 3.1.5 Removing the audio & digital input board Main board (See Figs.9 and 10) • Remove the metal cover. CN402 Power supply board (1) From the top side of the main body, disconnect the card CN401 CN416 wire from the connector CN401 on the audio &...
Page 12: No.mb075)1
3.1.8 Removing the main board Main board CN407 Parallel wire (See Figs.11 to 13) • Remove the metal cover. Card wires Parallel wire Card wire CN415 (1) From the top side of the main body, disconnect the card CN408 wires from the connectors (CN405, CN407, CN410 CN412, CN415) on the main board.
Page 13 3.1.9 Removing the connect board Phone jack board (See Fig.14) • Remove the metal cover. • Remove the front panel assembly. CN561 Connect board (1) From the inside of the front panel assembly, disconnect the card wire from the connector CN561 on the connect board.
Page 14 3.1.13 Removing the illumination board Front panel assembly (See Figs.17 and 18) (1) Open the door assembly of the front panel assembly and remove the three screws AA attaching the door cover to the door assembly. (See Fig.17.) (2) Disconnect the card wire from the connector CN551 on the illumination board.
Page 15 DVD changer mechanism assembly section 3.2.1 Removing the tray assemblies Open det lever (See Figs.1 to 5) (1) Remove the two screws A from the top cover and release the two joints a on the both sides of the DVD changer mechanism assembly.
Page 16 3.2.2 Removing the DVD servo board Short circuit points d (See Figs.6 and 7) • Prior to performing the following procedures, remove the tray assemblies. DVD pickup (1) From the topside of the DVD changer mechanism assem- bly, solder the short-circuit points d on the DVD pick up. (See Fig.6.) Caution: Solder the short-circuit points d on the DVD pickup be-...
Page 17 3.2.4 Removing the motor board (See Figs.9 and 10) (1) From the top side of the DVD chnager mechanism assem- bly, remove the two belts from the motor pulleys. (See Fig.9.) Belt Belt Caution: Take care not to attach grease on the belt. (2) Remove the four screws E attaching the motors to the chassis assembly.
Page 18 3.2.6 Removing the DVD traverse mechanism assembly DVD changer mechanism assembly (See Figs.6 and 11) DVD servo board • Prior to performing the following procedures, remove the tray assemblies. (1) From the topside of the DVD changer mechanism assem- bly, solder the short-circuit points d on the DVD pick up. (See Fig.6.) Caution: Solder the short-circuit points d on the DVD pickup be-...
Page 19 3.2.7 Removing the DVD pickup DVD traverse mechanism assembly (See Figs.12 to 14) Connector • Prior to performing the following procedures, remove the tray Flexible wire assemblies and DVD traverse mechanism assembly. (1) From topside of the DVD traverse mechanism assembly, disconnect the flexible wire from the connector on the DVD pickup.
Page 20 3.2.9 Removing the spindle motor board Card wire Motor base (See Figs.15 and 16) • Prior to performing the following procedures, remove the tray Spindle motor board assemblies and DVD traverse mechanism assembly. (1) From the topside of the DVD traverse mechanism assem- bly, remove the four screws L attaching the DVD traverse mechanism assembly to the DVD traverse mechanism base.
Page 21 3.2.11 Removing the side (L) assembly and tray switch board Side (L) assembly (See Figs.19 to 21) • Prior to performing the following procedures, remove the tray assemblies. (1) From the topside of the DVD changer mechanism assem- bly, remove the two screws S attaching the side (L) assem- bly.
Page 22 3.2.12 Removing the side (R) assembly Elevator spring (See Fig.22 to 26) • Prior to performing the following procedures, remove the tray assemblies and DVD servo board. • When removing the DVD servo board, it is not necessary to re- Elevator cam move the DVD servo board from the bracket.
Page 23 3.2.13 Removing the lifter assembly Hook (See Figs.27 to 31) • Prior to performing the following procedures, remove the tray assembies, DVD servo board, side (L) assembly and side (R) assembly. • When removing the DVD servo board, it is not necessary to re- move the DVD servo board from the bracket.
Page 24 3.2.14 Removing the rack holder assembly and sensor assembly Rack holder assembly (See Figs.32 to 38) • Prior to performing the following procedures, remove the tray Gear 1 assemblies, side (L) assembly, side (R) assembly and lifter as- sembly. Reference: If the slide gear of the DVD changer mechanism assembly places at joint ac of the rack holder assembly, turn the gear 1 counterclockwise to move the slide gear in the direction of the...
Page 25 Rack holder assembly Sensor board SV resister Sensor bracket Sensor slider Fig.37 Fig.34 Sensor assembly Sensor assembly Sensor slider Slide gear Sensor spring Slide lever Fig.35 Sensor spring Fig.38 Sensor slider Sensor spring Fig.36 (No.MB075)1-25...
Page 26 3.2.15 Taking out the disc in the play mode Tray assembly Disc (See Fig.39 to 42) Reference: Refer to "Removing the tray assemblies". (1) From the topside of the DVD mechanism assembly, re- move the top cover. (2) Unlock the tray assemblies and draw out the tray assem- blies toward the front.
Page 27 Subwoofer section Amplifier assembly 3.3.1 Removing the amplifier assembly (See Figs.1 to 3) (1) From the back side of the speaker main body, remove the four screws A attaching the heat sink cover and then re- move the heat sink cover. (See Fig.1.) (2) Remove the nine screws B attaching the amplifier assem- bly.
Page 28 3.3.3 Removing the speaker terminal board Speaker terminal board Amplifier assembly (See Figs.5 and 6) • Remove the amplifier assembly. • Remove the rear panel. (1) From the back side of the amplifier assembly, remove the two screws F attaching the AC bracket. (See Fig.5.) (2) Disconnect the wires from the connectors CN101 CN102...
Page 29 3.3.4 Removing the mother board (See Figs.7 to 9) Amplifier board (A) Amplifier board (B) • Remove the rear panel. • Remove the amplifier assembly. • Remove the speaker terminal board. (1) From the inside of the amplifier assembly, disconnect the wire from the connector CN151 on the mother board.
Page 30 3.3.5 Removing the amplifier board (A) Amplifier board (A) (See Figs.10 and 11) IC bracket • Remove the rear panel. • Remove the amplifier assembly. • Remove the speaker terminal board. • Remove the mother board. (1) Remove the three screws J attaching the IC bracket. (See Fig.10.) (2) Remove the amplifier board (A) from the heat sink together the IC bracket.
Page 31 3.3.7 Removing the power transformer Mother board Heat sink (See Figs.13 and 14) • Remove the rear panel. • Remove the amplifier assembly. • Remove the speaker terminal board. (1) Remove the tie band bundling the power cord and power transformer wire.
Page 32 3.3.8 Removing the indicator board Buffle assembly Cushioning plate,etc (See Fig.15 to 17) (1) Insert the tip of a flat-bladed screwdriver or a similar tool into the space between the speaker main body and buffle assembly (the section indicated by the arrows), and lift the buffle assembly little by little to move.
Page 33 3.3.9 Removing the speaker Speaker main body (See Figs.18 and 19) (1) Remove the four screws P attaching the speaker. (See Fig.18.) (2) Take out the speaker. (3) Disconnect the wires from the terminal of the speaker. (See Fig.19.) Speaker Fig.18 Wires Terminal...
Page 34: Adjustment
SECTION 4 ADJUSTMENT Test mode setting method (1) Unplug the power plug. (2) Insert power plug into outlet while pressing both "STOP" key and "OPEN/CLOSE" key (for DISC 1) of the main body. (3) "Area code" is indicated at the upper left of display. (4) To release test mode, press "STANDBY/ON"...
Page 35 All-initialization method Please perform all-initialization according to the following procedures in the following case: • Just after you exchange the pick-up. • Just after you exchange the spindle motor. • Just after you exchange the traverse mechanism base. NOTE: Please perform all-initialization when you exchange the parts above and also when you remove the parts above. •...
Page 36 Display of current value of laser (1) Set the main body at test mode. (2) Press "CHOICE" key of the remote controller three times. Then, FL display is displayed "CHECK". (3) The laser current value can be switched between the value of CD and that of DVD by pressing the following key of the remote controller.
Page 37 4.7.1 Tool for adjustment *Stud: One set (four studs), Part number: JIGXVS40 4.7.2 Preparation for adjustment (1) Set the disassembly procedure, and remove the changer mechanism assembly from the main body. (2) Disconnect the card wires from the connectors CN501 CN502 on the DVD servo board.
Page 38 Confirmation of region (1) Unplug the power plug. (2) Insert power plug into outlet while pressing both "PAUSE" key and "FORWARD SKIP" key of the main body. About 3 seconds later, FL display indicates "REGION ". (3) Push the "OPEN/CLOSE" key (for DISC 1) and confirm the tray of DISC 1 is ejected. (4) To release test mode, press "STANDBY/ON"...
Page 39: Troubleshooting
SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MB075)1-39...
Page 40 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB075) Printed in Japan...
Page 41: Schematic Diagrams
SCHEMATIC DIAGRAMS DVD DIGITAL THEATER SYSTEM TH-M55 CD-ROM No.SML200311 Area suffix J ----------------------------- U.S.A. C -------------------------- Canada SP-THM55C SP-THM55F SP-THM55F SP-THM55F SP-THM55F XV-THM55 SP-PWM55 Contents Block diagrams Standard schematic diagrams 2-27 to 37 Printed circuit boards No.MB075SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
Page 42 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 43 < M E M O >...
Page 44: Block Diagrams
Block diagrams <Main body section> DVD servo board Main board DVD-110,DVD-112 IC101 DVD-114,DVD-118 A,B,C,D,E,F,RF FRONT END DVD traverse PROCESSOR SAFETY Q4701 mechanism PD(CD) TBAL,FBAL,TE,FE,AS BACKUP PD(DVD) Q101 IC505 Q4831 ARF+,ARF-,BDO,OFTR & DET. F+,F- S2UDT,SCLK Q102 DRAM SAFETY RFENV,TESTSG,SLEEP T+,T- INTP,U2SDT TRDRV CDLDCUR DET.
Page 45 <Subwoofer section> Speaker terminal Mother board Amplifier board (A) DVD-110 board J4402 DVD-112 COMPONENT VIDEO OUT DVD-114 J401 LFE,FR,FL FCIN SL,SR,C Mini Din SLIN VIDEO-MUTE1 IC431 SRIN CONN. VIDEO-MUTE2 VIDEO P.ON VIDEO-YCMIX DRIVER VIDEO-RGB IC201 VIDEO-LPF Q545 SPEAKER POWER FCOUT AMP.
Page 46: Power Supply Section
Standard schematic diagrams <Main body section> Power supply section T901 C951 100p/50 QQS0097-001 EP901 D901 S1WB/A/60-4101 QEZ0136-001Z D951 R901 C908 ERA18-04-T1 0.0033 L901 QQR1105-001 C952 100p/1000 C907 C909 P901 100p/1000 D903 ERA18-04-T1 D902 D952 ERA18-04-T1 C913 ERA18-04-T1 100p/1000V IC901 EP902 STR-G6651 R907 QEZ0136-001Z...
Page 47 00p/50 Q951 CP951 2SC3576-JVC-T ICP-N10-T R952 C960 C961 4-T1 82/10 1.5/25 00p/1000 Q953 R953 L951 KTA1267/YG/-T 0.22 R954 04-T1 Q954 SI2305DS-X IC951 PQ05RD21 Q955 KRC103S-X C953 100p/50 L952 D953 FMB-24 C965 1000/10 R966 HS964 Q964 KTA1046/Y/ Q965 KTC3875/YG/-X D970 1SS133-T2...
Page 48 System control section QGF1016C1-31 CN411 KTC3203/OY/-T Q4921 R4921 1SS133-T2 KIA7805API IC491 D4834 D4831 1SS133-T2 KRA104S-X Q4951 R4833 D4833 Q4831 KRA104S-X KRC102S-X R4834 Q4952 1SS133-T2 R4931 Q4931 -VDISP KTA1271/OY/-T CP471 DVD-PON ICP-N5-T SYS-PON KTC3203/OY/-T Q4961 NTSEL TU-CE TU-CK VCR-S/C TU-DO C4771 R4773 KEY1 TU-DI...
Page 49 QGF1016C1-31 QGF1205C1-11 CN411 CN410 B4097 SAA6588 IC481 4S-X KTA1271/OY/-T Q4091 IC492 4S-X BU4066BCF-X RDS-CLK RDS-DATA B4098 RDS-ST 4.7K R4091 Q4092 KTC3875/YG/-X X4071 QAX0263-001Z S-MUTE SCART-LIN SCART-RIN AM-BEAT TU-CE TU-CK A12V EP401 TU-DO R4764 TU-DI SWPON DVD-118 RDS-CLK SMUTE RDS-DATA DVD-114 DVD-112 TU-PON DVD-PON...
Page 50 Video input / output section SCART-RIN SCART-LIN AGND A12V L4391 R4191 AGND B4499 DVD-118 B4299 VIDEO R4172 R4182 R4173 VIDE C4171 1/6.3 VIDE IC411 MM1233XF-X DVD-114 VIDE DVD-112 DVD-110 BLANK-CTL R4972 NTSEL VCR-S/C R4971 R4601 2.2K VIDEO-SW VIDEO-MUTE1 R4941 R4602 2.2K VIDEO-MUTE2 VIDEO-YCMIX...
Page 51 C4491 0.01 J4403 J4403 QNZ0516-001 R4472 R4474 R4471 C4476 4.7/25 4.7/25 C4475 R4481 R4442 R4473 C4443 C4433 R4432 Q4482 KRC102S-X C4453 R4452 Q4481 KRC102S-X R4485 Q4483 KRA102S-X R4486 LA73054-X IC431 C4422 R4422 470/6.3 Q4484 C4424 KRC102S-X 47/10 C4301 R4383 J4403 R4384 R4381 R4382...
Page 52 FL display section Q501 Q502 DI501 QLF0119-001 C501 470p C502 470p R501 DATAIN R502 X501 CLOCK NAX0623-001X R503 INITIAL IC501 C503 0.01 MN101C35DKW R504 C504 0.01 R534 R533 R532 R531 6.8k 3.9k 3.3k KEY3 Q511 Q512 Q513 S505 S504 S503 S502 S501 D511...
Page 53 JS501 QSW0898-001 C506 C505 R541 R542 0.01/16 100/6.3 C541 C542 0.01 0.01 CN501 QGF1016F2-21W VOL1 VOL2 DISC5-1 DISC5-2 DISC4-2 REMOCON R505 KEY3 IC502 KEY4 GP1UM271XK CLOCK D501 DATAIN INITIAL RESET DISC4-1 Q503 Q513 Q514 Q515 Q516 Q517 Q518 Q519 Q520 D512 D513 D514...
Page 54 DSP section TP603 IC409 GP1FA352RZ R418 R419 C411 0.1/16 IC408 74VHC00SJ-X IC410 C412 0.1/16 GP1FA352TZ Q404 R420 R438 KRC107S-X TP604 TP608 C436 IC402 47/6.3 MM1613DN-X X401 C437 C433 NAX0385-001X C432 0.01/16 0.01/16 C421 100/6.3 C431 C422 0.01/16 TP606 R423 R425 R426 R424 IC403...
Page 55 C408 47/6.3 CDTI C407 CCLK 0.1/16 IC401 AK4527BVQP R415 TP607 C405 0.1/16 C403 47/6.3 C404 47/6.3 C406 0.1/16 DSP_RST R445 MIACK R446 MILP R447 MICS Q402 R448 MICK KRC107S-X R451 R449 MIDIO R450 R452 4.3k DSPREADY R453 4.3k DSPCLK TP609 IC406 D407 R454...
Page 56 Audio input / output section LIN+ R2515 C2507 TP509 C2515 180p R2509 R2517 TP501 C2519 C2555 C2503 0.1/16 R2513 R2503 0.1/16 4.7/25 R2507 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 57 R1101 Q1252 C1103 KRA104S-X 4.7/25 R1252 C1101 330p R1102 C1102 C1104 330p 4.7/25 C495 0.01/16 Q1251 KRA104S-X R1251 IC160 NJM4580M-X C1215 R1153 C1213 R1149 4.7/25 C1217 4.7/25 4.7/25 R1158 IC153 M62446AFP-X C1225 C1125 470p 0.022/16 VOL_CK 4.7k R1121 C1226 R1154 VOL_DT R1122 VOL_STB...
Page 58 DVD servo section 1/4 C144 0.01/16 C113 C145 R114 R131 SGND C116 0.1/16 TESTSG C117 0.047/16 R116 C118 0.027/16 TBAL R106 C119 560P FBAL R107 IC101 R125 RFENV C115 AN8703FH-V R117 R124 K101 NQR0007-002X C138 OFTR C121 0.1/16 FEPEN 2.2K C122 R127 CPSCK...
Page 59 D1.8V C305 D3.3V C307 K303 K302 C336 C335 C306 R341 47/4 C308 5.6K 47/4 DGND S3.3V C309 K301 ODCIRQ2 R318 ODCIRQ R319 C347 TP309 0.1/16 TP308 ADSCIRQ TP307 C304 D301 TP306 47/4 RB521S-30-X C310 0.1/16 TP331 C311 LADD17 560P LADD16 CDLDCUR C312 R321...
Page 60 DVD servo section 2/4 D1.8V D3.3V C502 C503 LC502 LC504 K502 K504 C521 C504 C524 C527 47/4 47/4 D3.3V C508 0.1/16 C512 MD10 MD11 LC501 470P C514 K501 MD12 NQR0007-002X MD13 MD14 MD15 C509 470P C515 DQM1 IC505 W986432DH-7 C511 C501 0.1/16 C505...
Page 61 TP532 TP531 TP530 TP529 TP533 TP528 TP560 TP561 TP527 R505 R506 R507 R508 PWE0 R584 3.3K PWE1 C558 0.1/16 AD10 AD11 AD12 AD13 SCLK C559 470P R514 AD14 AD15 PWE2 AD16 C560 470P AD17 AD18 IC501 AD19 NDV8601VWA-BE AD20 AD21 AD22 AD23 PWE3...
Page 62 DVD servo section 3/4 IC405 SST39VF160-7CEK LADD15 LADD16 R412 LADD14 LADD13 AD15 LADD12 CN404 LADD11 LADD10 AD14 LADD9 LADD8 AD13 LADD19 AD12 SRST PWE0 R410 AD11 AD30 AD31 R411 AD28 AD29 AD10 AD26 AD27 LADD18 AD24 AD25 LADD17 AD23 LADD7 AD22 PWE3 LADD6...
Page 63 D3.3V C425 DISPRST DISPBUSY DISPCS DISPCK K405 DISPD2S LADD16 IC406 74LVC373APW-X DISPS2D AD15 CN501 LADD6 LADD19 QGF1016C2-07W AD19 AD14 DGND AD18 DOUTCNT LADD5 LADD18 AD13 C422 LADD4 LADD17 0.1/16 AD17 AD12 AD16 LADD16 LADD7 AD11 AD10 LADD11 LADD15 AD11 AD15 AD10 AD14 D3.3V...
Page 64 DVD servo section 4/4 2-21...
Page 65 2-22...
Page 66 DVD mechanism control section QSW0931-001 M.TR_OP TR5_CL TR5_CL TR4_CL TR4_CL TR3_CL TR3_CL TR2_CL TR2_CL TR1_CL TR1_CL 0.1/50 QRA0164-00 2-23...
Page 67 QVY0002-B14 WJM0331-001A QSW0886-002 WJM0330-001A LB1641 LB1641 TR3_CL TR2_CL TR4_CL TR1_CL TR5_CL M.TR_OP POS_UP TR_OP POS_DOWN TR_CL 0.1/50 0.1/50 QSW0886-002 RA0164-001 QRA0164-001 2-24...
Page 68 <Subwoofer section> Subwoofer section IC301 STK413-420 R3502 C3105 C3205 C3305 R3501 R3106 0.22 C3206 R3305 3.3P D3501 C3306 R3205 R3105 D3502 3.3P C3106 3.3P C3502 C2501 C3501 100/50 100/5 C250 C3503 100/50 100/5 C3504 C2504 C3507 0.01 CN352 CN351 QGB2510K2-07 QGB2510K2-18 CN532 CN531...
Page 69 IC201 STK413-490 R2502 C2105 C2205 C2305 R2501 C2206 R2106 R2305 3.3P D2501 D2502 0.22 R2205 C2306 R2105 3.3P C2106 3.3P C2502 T101 QQT0404-003 S101 C2501 100/50 C2503 100/50 QSW0924-001 C2504 C2507 0.01 J401 QND0079-001 CN252 CN251 QGB2510K2-18 QGB2510K2-07 CN522 CN521 QGB2510J1-18 QGB2510J1-07 P.ON...
Page 70 Printed circuit boards (Phone jack board) <Main body section> Main board W6001 C6204 R6205 R6207 R6206 B6004 R6203 B6001 C6202 K6001 R6301 C6003 C6203 IC601 K6003 B6002 C6103 C6102 C6001 R6103 R6102 R6107 R6106 (Main board) C6104 R6105 CN404 CN403 CN402 CN416 R4885...
Page 71 k board) C6901 R6203 B6102 B6101 C6902 B6104 C6201 B6105 C6101 (Power supply board) R6102 R4797 R4794 R4885 FC901 R4865 FC902 R4864 R4862 B3101 CN415 C902 B3102 R905 C915 R4852 R4851 R910 Q4851 Q4852 B4016 B4015 R911 B4336 B4337 IC473 K902 B3199 B4159...
Page 72 Front board Forward side (Front board) (Operation board) CN501 CN551 S574 R551 C551 (Illumination board) C505 S573 (Support board) R503 C503 R502 C502 S572 (Connect board) S571 S577 S576 S575 2-29...
Page 73 Reverse side (Operation board) (Front board) Q503 C508 C507 R505 S575 S576 S577 S571 R513 (Connect board) C501 C506 S572 R504 C504 R501 R514 (Support board) S573 C510 C509 C505 C542 C541 S574 R541 (Illumination board) 2-30...
Page 74 DSP board Forward side C1211 R1163 C1206 R1164 C1179 C1178 C1176 C413 C1177 C1221 R1169 R1138 R1201 R1167 R1137 C1227 R1131 IC158 R1134 R1141 C1209 R1132 R1139 C1207 C1128 R1202 C1126 R1170 C1127 C1204 C1202 R483 C1121 R2580 R2579 R2532 R2531 C2576 C2575...
Page 75 Reverse side CN401 C462 C459 C454 C445 C458 R461 C432 C431 R431 C430 D407 R445 R446 R448 R447 R449 R450 R407 R406 R408 R404 R403 R405 R415 C403 C408 R475 R476 R2581 C2554 C2553 C422 R2585 R2582 C2556 C2555 C404 TP509 C466 TP510...
Page 76 DVD servo board Forward side R301 LC556 C346 C434 C343 R341 R340 IC511 SW401 R343 C345 C344 C301 C433 C348 CN404 R305 R302 K304 R306 D301 R303 C550 R408 R409 R304 K302 K557 C435 R567 R568 R569 TP317 R344 R584 R589 R514 C573...
Page 77 DVD loading board (Motor board) (Sensor board) (Switch board) (Tray switch board) 2-34...
Page 78 <Subwoofer section> Mother board (Mother board) C512 R522 R555 R151 D153 D535 D154 R152 FC152 FC151 CN503 CN504 CN501 R510 R512 D505 FC156 FC155 Q511 R548 R503 R519 Q501 D501 R502 R549 R511 Q514 C501 R501 R547 D511 R518 FC158 FC157 D512 Q504...
Page 79 (Speaker terminal board) C415 C416 L411 L412 C413 C411 C414 C412 RY401 R491 C424 C422 C423 C421 D401 C401 L421 L422 C425 C426 C435 C436 RY402 L432 L431 C433 C431 C434 C432 C445 C446 L442 L441 C443 C441 C444 C442 RY403 L451 L452...
Page 80 Amplifier 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 81 < M E M O >...
Page 82 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.MB075SCH)
Page 83: Parts List
PARTS LIST [ TH-M55 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix J ----------------------------- U.S.A. C -------------------------- Canada - 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)
Page 84: Exploded View Of General Assembly And Parts List (Block No.m1)
Exploded view of general assembly and parts list Block No. Power su Operation board Support board Connect board Illumination board...
Page 85 Power supply board Main board 59 57 Audio & Digital input board Front board Phone jack board...
Page 86 General assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local QYSBSE3008Z SCREW 3mm x 8mm LV10769-004A FRONT PANEL LV34038-004A FL LENS LV43327-002A VOL RING QYSDSF2608Z SCREW 2.6mm x 8mm LV21451-002A BUTTON ORNAMENT LV21448-001A...
Page 87: 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 Indicator board...
Page 88 Speaker (Subwoofer) Block No. [M][2][M][M]  Symbol No. Part No. Part Name Description Local LV10784-009A REAR CHASSIS QYSBSF4010Z TAP SCREW M4 x 10mm(x6)  3 QQT0404-001 POWER TRANSF LV31723-001A TRANS BRACKET E406309-002 SPACER (x4) QYSDSTL4010E TAP SCREW M4 x 10mm(x4) F 101 ...
Page 89: 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 9000005311 FOOT (x16) 6000198801 RATING LABEL (x4) 6400021401 BRACKET (x4)
Page 90: 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 9000005311 FOOT (x4) 6000198811 RATING LABEL TF040013-01 SPEAKER(TW) 7001591201 SCREW...
Page 91: Dvd Changer Mechanism Assembly And Parts List (Block No.mk)
DVD changer mechanism assembly and parts list Block No. EMU-SD1-1M Grease =JVG-31N =JVS-1003...
Page 92 DVD changer mechanism Block No. [M][K][M][M]  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local QAL0478-001 PICK UP LV33983-001A PS SPRING QYSPSFT1730Z TAP SCREW M1.7 x 3mm LV10743-003A CHASSIS ASSY LV33984-001A RACK ARM LV43278-001A SENSOR SPRING...
Page 93: Electrical Parts List
PQ05RD21 Regulator IC953 KIA7805API Regulator  PC901 PC123Y22FZ PHOTO COUPLER Photo coupler  PC902 PC123Y22FZ PHOTO COUPLER Photo coupler Q951 2SC3576-JVC-T TRANSISTOR Q953 KTA1267/YG/-T TRANSISTOR  C902 QFZ9075-683 MPP CAPACITOR 0.068uF AC275V M Q954 SI2305DS-X TRANSISTOR  C904 QCZ9079-102 C CAPACITOR...
Page 94  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C4191 QETN1VM-476Z E CAPACITOR 47uF 35V M R955 NRSA63J-223X MG RESISTOR 22kΩ 1/16W J C4192 NCB31HK-103X C CAPACITOR 0.01uF 50V K R960 NRSA63J-101X MG RESISTOR 100Ω...
Page 95  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R4801 NRSA63J-223X MG RESISTOR 22kΩ 1/16W J EP401 QNZ0136-001Z EARTH PLATE R4802 NRSA63J-223X MG RESISTOR 22kΩ 1/16W J EP402 QNZ0136-001Z EARTH PLATE ...
Page 96  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local CN551 QGF1006F1-04W CONNECTOR FFC/FPC (1-4) D401 MA152WK-X SI DIODE CN561 QGF1006F1-04W CONNECTOR FFC/FPC (1-4) D403 MA152WK-X SI DIODE DI501 QLF0119-001 FL TUBE D405 MA152WK-X SI DIODE...
Page 97  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C1201 NEA71EM-475X E CAPACITOR 4.7uF 25V M C2600 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z C1202 NEA71EM-475X E CAPACITOR 4.7uF 25V M C2601 NEA71EM-475X E CAPACITOR 4.7uF 25V M...
Page 98  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R1137 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J R2566 NRSA63J-392X MG RESISTOR 3.9kΩ 1/16W J R1138 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J R2567 NRSA63J-103X MG RESISTOR 10kΩ...
Page 99  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local D503 MTZJ5.1C-T2 Z DIODE R537 QRE141J-472Y C RESISTOR 4.7kΩ 1/4W J D504 1SS133-T2 DIODE R538 QRE141J-472Y C RESISTOR 4.7kΩ 1/4W J D505 1SS133-T2 DIODE R539...
Page 100  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local D2502 MTZJ13C-T2 Z DIODE R2202 QRE141J-471Y C RESISTOR 470Ω 1/4W J D3101 1SS133-T2 DIODE R2203 QRE141J-563Y C RESISTOR 56kΩ 1/4W J D3201 1SS133-T2 DIODE R2204...
Page 101  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R3505 QRE141J-333Y C RESISTOR 33kΩ 1/4W J DVD on a chip IC501 or NDV8601VWA-BE processor  R3506 QRZ9006-4R7X F.RESISTOR 4.7Ω 1/4W J IC505 K4S643232F-TC60 ...
Page 102  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C319 NCB31HK-102X C CAPACITOR 1000pF 50V K C540 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z C320 NCB31HK-102X C CAPACITOR 1000pF 50V K C541 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z...
Page 103  Symbol No. Part No. Part Name Description Local R307 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R308 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J R309 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R313 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R317 NRSA63J-473X MG RESISTOR 47kΩ...
Page 104 Packing materials and accessories parts list Block No. P21 P17 A1, A2, A3, A12 3-22...
Page 105 Packing and accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local LVT1024-002B INST BOOK ENG,FRE THM55C LVT1024-001B INST BOOK THM55J YU20333 SAFETY INST. BT-51034-1 J=REGIST CARD THM55J QAM0381-001 SYSTEM CABLE QAM0236-001 VIDEO CABLE LV43454-001A SPK CORD ASSY ...

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