SERVICE MANUAL DVD DIGITAL CINEMA SYSTEM MB294 2004 TH-M508 Area suffix US ------------------------ Singapore UW ----------- Brazil,Mexico,Peru UX -------------------- Saudi Arabia UG --- Turkey,South Africa,Egypt UN ----------------------------- Asean (SP-THM505S) (SP-PWM508) (SP-THM508C) (SP-THM508F) (XV-THM508) TABLE OF CONTENTS PRECAUTION............... . . 1-4 SPECIFIC SERVICE INSTRUCTIONS .
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SPECIFICATION Center unit (XV-THM508) Audio section Digital input*2 DIGITAL IN (DBS) (OPTICAL) -21 dBm to -15 dBm (660 nm E30 nm) Video section Video System NTSC/PAL selectable Horizontal Resolution 500 lines Signal-to-Noise Ratio 64 dB 1.0 V(p-p)/75 Ω Video output level Composite 1.0 V(p-p)/75 Ω...
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Satellite Speakers-Surround speakers (SP-THM505S) Speakers 8.0 cm, Bass-reflex, Magnetically Shielded Power Handling Capacity 140 W 4 Ω Impedance Frequency Range 80 Hz to 20 kHz Dimensions (W × H × D) 111.5 mm × 139 mm × 106.5 mm Mass 0.52 kg Satellite Speakers-Center speaker (SP-THM508C) 8.0 cm ×...
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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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. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
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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 here in 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 metal cover (See Figs.1 to 4) (1) From the both sides of the main body, remove the four screws A attaching the metal cover. (See Figs.1 and 2) Metal cover (2) From the back side of the main body, remove the three screws B attaching the metal cover.
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3.1.2 Removing the front panel assembly (See Figs.5 and 6) • Prior to performing the following procedures, remove the metal cover. Main board CN456 CN457 CN450 CN460 (1) From the top side of the main body, disconnect the parallel wires from the connectors (CN456, CN457) on the main board.
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3.1.3 Removing the DVD changer mechanism assembly (See Fig.7) • Prior to performing the following procedures, remove metal cover and front panel assembly. DVD changer mechanism assembly (1) From the top side of the main body, remove the screw E at- CN402 CN401 CN403 taching the wire protection board to the main board.
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3.1.5 Removing the audio & digital input board (See Figs.9 and 10) • Prior to performing the following procedures, remove the metal cover. Main board CN412 Power supply board (1) From the top side of the main body, disconnect the card wires from the connectors (CN411, CN412) on the main Card wires CN411...
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3.1.8 Removing the main board (See Fig.11) • Prior to performing the following procedures, remove the metal cover, rear panel, audio & digital input board and tuner. CN460 CN456 Wire protection board (1) From the top side of the main body, remove the screw Q Earth wire CN457 CN401...
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Front panel assembly section • Prior to performing the following procedures, remove the front panel assembly from the main body. (See “Removing the front panel assembly”) 3.2.1 Removing the phone jack board (See Fig.1) (1) From the inside of the front panel assembly, remove the screw A and screw A’...
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3.2.4 Removing the front board (See Figs.2 and 3) • Prior to performing the following procedures, remove the oper- ation board. Front panel assembly (1) From the front side of the front panel assembly, pull out the volume knob in the direction of the arrow. (See Fig.2) (2) From the inside of the front panel assembly, remove the seven screws D attaching the front board.
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3.2.6 Removing the illumination board (See Figs.5 and 6) (1) Open the DVD door of the front panel assembly and re- move the three screws F attaching the door holder to the Door holder Front panel assembly DVD door. (See Fig.5) (2) Remove the DVD door from the door holder.
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DVD changer mechanism assembly section • Prior to performing the following procedures, remove the metal cover, front panel assembly and the DVD changer mechanism assembly. 3.3.1 Removing the tray assemblies (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 Open det lever mechanism assembly.
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3.3.2 Removing the DVD servo board (See Figs.6 to 8) • Prior to performing the following procedures, remove the tray Short circuit points d assemblies. (1) From the topside of the DVD changer mechanism assem- bly, solder the short-circuit points d on the DVD pick up. DVD pickup (See Fig.6) Caution:...
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3.3.4 Removing the motor board (See Figs.9 and 10) (1) From the top side of the DVD changer mechanism assem- bly, remove the two belts from the motor pulleys. (See Fig.9) Caution: Take care not to attach grease on the belt. Belt Belt (2) Remove the four screws D attaching the motors to the...
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3.3.7 Removing the DVD pickup (See Figs.12 to 14) • Prior to performing the following procedures, remove the tray Short circuit points i assemblies and DVD traverse mechanism assembly. (1) From the topside of the DVD traverse mechanism assem- DVD traverse mechanism assembly bly, solder the short-circuit points i on the DVD pick up.
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3.3.9 Removing the spindle motor board (See Figs.15 and 16) • Prior to performing the following procedures, remove the tray Motor base assemblies and DVD traverse mechanism assembly. Card wire (1) From the topside of the DVD traverse mechanism assem- Spindle motor board bly, remove the four screws K attaching the DVD traverse mechanism assembly to the DVD traverse mechanism...
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3.3.11 Removing the side (L) assembly and tray switch board (See Figs.19 to 23) • Prior to performing the following procedures, remove the tray Joint tab r assemblies. (1) From the topside of the DVD changer mechanism assem- bly, remove the two screws R attaching the side (L) assem- Side (L) assembly bly.
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3.3.12 Removing the side (R) assembly (See Fig.22 to 26) • Prior to performing the following procedures, remove the tray Elevator spring assemblies and DVD servo board. Hook u • When removing the DVD servo board, it is not necessary to re- move the DVD servo board from the bracket.
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3.3.13 Removing the lifter assembly (See Figs.27 to 31) • Prior to performing the following procedures, remove the tray Hook assemblies, DVD servo board, side (L) assembly and side (R) assembly. • When removing the DVD servo board, it is not necessary to re- Joint aa move the DVD servo board from the bracket.
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3.3.14 Removing the rack holder assembly and sensor assembly (See Figs.32 to 38) • Prior to performing the following procedures, remove the tray assemblies, side (L) assembly, side (R) assembly and lifter as- Rack holder assembly 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 Gear 1...
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Notch ag Sensor assembly Boss af Sensor assembly Sensor slider Joint ae Hole ah Slide gear Boss af Notch ag Joint ae Sensor spring Notch am Fig.35 Pin ak Slot aj Hole ah Slide lever Sensor spring Fig.38 Sensor slider Boss af Sensor spring Fig.36...
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3.3.15 Taking out the disc in the play mode (See Fig.39 to 42) Reference: Tray assembly Disc Refer to "Removing the tray assemblies". (1) From the topside of the DVD changer mechanism assem- bly, remove the top cover. (2) Unlock the tray assemblies and draw out the tray assem- blies toward the front.
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Speaker section 3.4.1 Removing the amplifier assembly (See Figs.1 to 3) (1) From the back side of the speaker main body, remove three screws A attaching the amplifier assembly. (See Fig.1) (2) From the bottom side of the speaker main body, remove the eight screws B attaching amplifier assembly.
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3.4.4 Removing the heat sink bracket (See Fig.5) • Prior to performing the following procedure, remove the ampli- fier assembly. Barrier (1) From the top side of the amplifier assembly, remove the three screws G and three screws H attaching the heat sink bracket.
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3.4.6 Removing the power board (See Figs.7 to 9) • Prior to performing the following procedures, remove the am- Barrier plifier assembly, rear panel, heat sink bracket and amplifier board. (1) From the right side of the amplifier assembly, remove the five screws J attaching the power board.
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3.4.7 Removing the heat sink (See Figs.10 and 11) • Prior to performing the following procedures, remove the am- plifier assembly, rear panel, heat sink bracket, amplifier board and power board. (1) From right side of the amplifier assembly, remove the three screws L and three screws M attaching the heat sink.
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3.4.9 Removing the LED board (See Fig.13) • Prior to performing the following procedures, remove the am- plifier assembly and rear panel. (1) From the top side of the amplifier assembly, disconnect the wire from the connector CN501 on the LED board. (2) Remove the two screws R attaching the LED board, take out the LED board.
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3.4.11 Removing the speaker net (See Figs.15 and 16) (1) From right side of the speaker main body, remove the four screws T attaching the speaker net. (See Fig.15) (2) From bottom side of the speaker main body, insert the tip of the flat-bladed screwdriver or similar tool into the space between the speaker main body and speaker net, and lift the speaker net little by little to remove.
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3.4.12 Removing the speaker (See Figs.17 and 18) • Prior to performing the following procedures, remove the speaker net. (1) From right side of the speaker main body, remove the eight screws U attaching the speaker. (See Fig.17) (2) Take out the speaker from the speaker main body. (See Fig.18) (3) Disconnect the wires from the terminal of the speaker.
SECTION 4 ADJUSTMENT Test mode setting method (1) Unplug the power plug. (2) Insert power plug into outlet while pressing both "PLAY" key and "STANDBY/ON" key of the main body. "Area code" is indicated at the upper left of display, (3) To release test mode, press "STANDBY/ON"...
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Normal initialization method Please initialize according to the following procedures in the following case: • Just after you upgrade the firmware. • After you confirm the symptoms that a customer points out. First Initialize, and then confirm whether the symptoms are improved or not.
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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.MB294) Printed in Japan...
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SCHEMATIC DIAGRAMS DVD DIGITAL CINEMA SYSTEM TH-M508 Area suffix US ------------------------ Singapore UW ----------- Brazil,Mexico,Peru CD-ROM No.SML200407 UX -------------------- Saudi Arabia UG --- Turkey,South Africa,Egypt UN ----------------------------- Asean (SP-THM505S) (SP-PWM508) (SP-THM508C) (SP-THM508F) (XV-THM508) Contents Block diagrams 2-2 to 13 Standard schematic diagrams...
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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.
Block diagrams <Main body section> <Subwoofer section> DVD servo board Audio input/output section Speaker terminal section EXADT0 to 15, EXADR16 to 20 A, B, C, D, E, F, RF+, PD(CD), PD(DVD) SW.P.ON, SETUP NEXCE, NEXOE, NEXWE IC509 J1002 DVD traverse SYSTEM LPCO1, LPCO2 FLASH ROM...
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Standard schematic diagrams <Main body section> Power supply section Parts are safety assurance parts. When replacing those parts make SHEET 1 sure to use the specified one.
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System control section To CN441 To CN442 To CN702 To CN701 OF LVA10476-A1 OF LVA10476-A1 OF LVA10510-91A OF LVA10510-91A (SHEET 8) (SHEET 8) (SHEET 5) (SHEET 5) Parts are safety assurance parts. When replacing those parts make To FW521 To FW561 sure to use the specified one.
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<Subwoofer section> Terminal section Parts are safety assurance parts. To CN303 To CN201 To CN301 To CN203 To CN302 When replacing those parts make (SHEET 11) (SHEET 12) (SHEET 11) (SHEET 12) (SHEET 11) sure to use the specified one. SHEET 10 2-11...
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Mother section To CN133 (SHEET 10) To CN132 (SHEET 10) To CN131 (SHEET 10) Parts are safety assurance parts. When replacing those parts make sure to use the specified one. SHEET 11 2-12...
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Amplifier section To CN121 (SHEET 10) To CN122 (SHEET 10) SHEET 12 2-13...
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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.MB294CH)
PARTS LIST [ TH-M508 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix US ---------------------- Singapore UW ---------- Brazil,Mexico,Peru UX ------------------- Saudi Arabia UG - Turkey,South Africa,Egypt UN ----------------------------Asean - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1)
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Exploded view of general assembly and parts list Block No. Operation board Connect board Illumination board Phone...
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Power supply board Main board 55 52 Audio & Digital input board Front board Phone jack board...
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General assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local LV10965-006A FRONT CAB ASSY LV21605-001A FL LENS LV34588-002A VOL RING QYSDSF2608Z TAP SCREW M2.6 x 8mm QYSDSF2608Z TAP SCREW M2.6 x 8mm(x3) QYSDSF2608Z TAP SCREW M2.6 x 8mm(x4) LV42851-006A FL SCREEN LV21607-001A...
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Symbol No. Part No. Part Name Description Local LV43661-001A LV30225-0M9A SPACER (x2) LV42683-001A SPACER LV21606-001A DISC BUTTON LV43657-001A INDICATOR...
Speaker assembly and parts list (Center speaker) Block No. The parts without symbol number are not service. Speaker (Center speaker) Block No. [M][6][M][M] Symbol No. Part No. Part Name Description Local TF040013-02 SPEAKER(TW) 7001591206 SCREW (x2) 5700071001 TW RING CR077019-01 SPEAKER(WF) (x2)
Speaker assembly and parts list (Front speaker) Block No. The parts without symbol number are not service. Speaker (Front speaker) Block No. [M][7][M][M] Symbol No. Part No. Part Name Description Local TF040013-02 SPEAKER(TW) 7001591206 SCREW (x2) 5700070901 TW RING CR100051-03 SPEAKER(WF) CR100051-04...
DVD mechanism assembly and parts list Block No. FXL-D52-1M Grease =JVG-31N =JVS-1003 The parts without symbol number are not service. 3-10...
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DVD mechanism Block No. [M][J][M][M] Symbol No. Part No. Part Name Description Local LV10751-001A TM CHASSIS LV10752-003A SF MOTOR BASE QAR0308-001 SPINDLE MOTOR LV43461-001A SPECIAL SCREW (x3) QAR0144-003 MOTOR VKS5557-001 F.M. GEAR QYSPSPT2030M SCREW M2 x 3mm LV33985-001A MIDDLE GEAR QYSDST2008Z TAP SCREW M2 x 8mm(x2)
DVD changer mechanism assembly and parts list Block No. FMU-SD9-5M Grease =JVG-31N =JVS-1003 CH5-BASE-1M The parts without symbol number are not service. 3-12...
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DVD changer mechanism Block No. [M][K][M][M] Symbol No. Part No. Part Name Description Local LV10913-001A LOADER ASSY QVY0027-B14 S V RESISTOR QYSDST2004Z SCREW 2mm x 4mm QAR0164-001 MOTOR (x2) LV42340-001A MOTOR PULLEY (x2) LV41431-002A BELT (x2) QYSPSPU1725N SCREW 1.7mm x 2.5mm(x2) LV33965-004A LIFTER ASSY LV33963-001A...
STR-G6651 D4891 MTZJ6.2C-T2 Z DIODE IC951 PQ05RD21 D4921 MTZJ8.2C-T2 Z DIODE IC953 KIA7805API D4922 1SS133-T2 DIODE D4931 MTZJ8.2C-T2 Z DIODE Q951 2SC3576-JVC-T TRANSISTOR D4932 1SS133-T2 DIODE Q953 KTA1267/YG/-T TRANSISTOR D4961 MTZJ4.7A-T2 Z DIODE Q954 SI2305DS-X TRANSISTOR D4962 1SS133-T2 DIODE Q955...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C4006 QCZ0202-155Z C CAPACITOR 1.5uF 25V Z C6104 NCB31CK-104X C CAPACITOR 0.1uF 16V K C4011 NCB31HK-822X C CAPACITOR 8200pF 50V K C6105 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 R984 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J R4777 NRSA63J-101X MG RESISTOR 100Ω 1/16W J R985 NRSA02J-132X MG RESISTOR 1.3kΩ 1/10W J R4778 NRSA63J-101X MG RESISTOR 100Ω...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R6512 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J CP471 ICP-N5-T IC PROTECTOR 250mA R6513 NRSA63J-104X MG RESISTOR 100kΩ 1/16W J CP951 ICP-N10-T IC PROTECTOR 400mA...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R503 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J Q1133 IMX9-W TRANSISTOR R504 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J Q1135 IMX9-W TRANSISTOR R511 NRSA63J-221X MG RESISTOR 220Ω...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C2561 QETN1HM-105Z E CAPACITOR 1uF 50V M R1172 NRSA63J-332X MG RESISTOR 3.3kΩ 1/16W J C2562 QETN1HM-105Z E CAPACITOR 1uF 50V M R1173 NRSA63J-473X MG RESISTOR 47kΩ...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local Q1007 UN2111-X TRANSISTOR D3707 1SS133-T2 SI DIODE Q1101 KTA1504/YG/-X SI TRANSISTOR D3708 1SS133-T2 SI DIODE Q1102 KTC3875/YG/-X SI TRANSISTOR D3709 1SS133-T2 SI DIODE Q1103 KTC3875/YG/-X SI TRANSISTOR...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C1208 NCB31HK-221X C CAPACITOR 220pF 50V K C3505 NCF31HZ-103X C CAPACITOR 0.01uF 50V Z C1209 NCB31HK-221X C CAPACITOR 220pF 50V K C3506 NCB11HK-223X C CAPACITOR 0.022uF 50V K...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R1212 NRSA63J-153X MG RESISTOR 15kΩ 1/16W J R1506 NRSA63J-471X MG RESISTOR 470Ω 1/16W J R1213 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J R1507 NRSA63J-563X MG RESISTOR 56kΩ...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R3718 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J J1001 QND0118-001 DIN CONNECTOR R3720 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J J1002 QNB0192-001 SPEAKER TERMINA R3721 NRSA63J-104X MG RESISTOR...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local Q2708 UN2111-X TRANSISTOR C2105 NDC31HJ-151X C CAPACITOR 150pF 50V J Q2709 2SA1514K/RS/-X TRANSISTOR C2106 NDC31HJ-560X C CAPACITOR 56pF 50V J Q2901 KTA1046/Y/ TRANSISTOR C2107 NCB21HK-104X...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R2020 NRSA63J-822X MG RESISTOR 8.2kΩ 1/16W J R2222 NRSA63J-221X MG RESISTOR 220Ω 1/16W J R2021 NRSA63J-105X MG RESISTOR 1MΩ 1/16W J R2223 NRSA63J-682X MG RESISTOR 6.8kΩ...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C306 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z QEKC1AM-107Z E CAPACITOR 100uF 10V M C307 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z QCFB1HZ-104Y C CAPACITOR 0.1uF 50V Z C308 NCF31CZ-104X...
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Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C718 NCF31CZ-104X C CAPACITOR 0.1uF 16V Z R359 NRSA63J-221X MG RESISTOR 220Ω 1/16W J C722 NCB31CK-104X C CAPACITOR 0.1uF 16V K R360 NRSA63J-221X MG RESISTOR 220Ω...
Packing materials and accessories parts list Block No. A1,A2, A4,A5, A6,A7,A8,A9, A10 3-28...
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Packing and accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local LVT1147-010A INST BOOK LVT1147-011A INST BOOK CHI(PEKIN) THM508UN,THM508US LVT1147-012A INST BOOK SPA POR THM508UW LVT1147-013A INST BOOK THM508UG,THM508UX LVT1147-017A INST BOOK THM508UG THM508UG,THM508UN,THM508US,THM5 QMPL060-183-JD POWER CORD(EU) 1.83m BLACK ...