JVC TH-L1A Service Manual
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JVC TH-L1A Service Manual

JVC TH-L1A Service Manual

Digital media system
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SERVICE MANUAL
2007
7 S ERVICE MANUAL
MB623
TH-L1A, TH-L1US, TH-L1UB,
TH-L1UJ, TH-L1UG, TH-L1UN
COPYRIGHT © 2007 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
DIGITAL MEDIA SYSTEM
AX-THL1

TABLE OF CONTENTS

COPYRIGHT © 2007 Victor Company of Japan, Limited
SP-THL1W
SP-THL1F
SP-THL1F
SP-THL1S
SP-THL1S
SP-THL1C
No.MB623
2007/7

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  • Page 1: Table Of Contents

    SERVICE MANUAL DIGITAL MEDIA SYSTEM MB623 2007 7 S ERVICE MANUAL TH-L1A, TH-L1US, TH-L1UB, TH-L1UJ, TH-L1UG, TH-L1UN SP-THL1W SP-THL1F SP-THL1F SP-THL1S SP-THL1S SP-THL1C AX-THL1 COPYRIGHT © 2007 Victor Company of Japan, Limited Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

  • Page 2: No.mb623)1

    SPECIFICATION Center unit 40 W per channel RMS at 3 Ω at 1 kHz with 10% total harmonic distortion. Output power Front/Surround 100 W RMS at 4 Ω at 1 kHz with 10% total harmonic distortion. Center 100 W RMS at 4 Ω at 30 Hz with 10% total harmonic distortion. Subwoofer 500 mV/50 k Ω...

  • Page 3: No.mb623)1

    Subwoofer (SP-THL1W) Type 1-way Bass-Reflex Type (Magnetically-Shielded Type) 16 cm cone × 1 Speaker Power Handling Capacity 100 W 4 Ω Impedance Frequency Range 30 Hz to 1.5 kHz Sound Pressure Level 84 dB/W•m Dimensions (W × H × D) 266 mm ×...

  • Page 4: 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 5: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the SIDE PANEL (See Fig.1, 2) (1) Remove the nine screws A attaching the SIDE PANEL. (See Fig.1) (2) Remove the three screws B attaching the SIDE PANEL. (See Fig.2) Fig.1 Fig.2...
  • Page 6 3.1.2 Removing the FRONT PANEL assembly (See Fig.3, 4) (1) Remove the two screws C attaching the both side of FRONT PANEL assembly. (See Fig.3) (2) Disengage the six hooks a engaged both side of FRONT PANEL assembly. (See Fig.3) (3) Disconnect the card wire from MAIN BODY connected to hook connector...
  • Page 7 3.1.3 Removing the TOP CHASSIS (See Fig.5 to 8) (1) From the back side of main body, remove the two screws D attaching the TOP CHASSIS. (See Fig.5) (2) From the top side of main body, remove the one screw E attaching the TOP CHASSIS.
  • Page 8 3.1.4 Removing the HDMI assembly (See Fig.9, 10) (1) Disconnect the card wire from HDMI assembly connected to connector CN901 of the VIDEO 2 BOARD assembly. (See Fig.9) (2) Remove the two screws H and three screws J attaching the HDMI BOARD assembly.
  • Page 9 3.1.5 Removing the VIDEO 2 BOARD assembly (See Fig.11, 12) (1) Disconnect the card wire from VIDEO 2 BOARD assembly connected to connector CN905 of the MAIN BOARD as- sembly. (See Fig.11) (2) Remove the two screws K attaching the VIDEO 2 BOARD assembly.
  • Page 10 3.1.7 Removing the POWER BOARD assembly (See Fig.14 to 17) (1) Remove the four screws M attaching the POWER BOARD assembly. (See Fig.14) (2) Remove the one screw N attaching the DUMMY BOARD. (See Fig.15) (3) Disconnect the connector wires from POWER BOARD as- sembly connected to connector CN200, CN201 CN202...
  • Page 11 3.1.8 Removing the REAR PANEL (See Fig.18 to 20) (1) Disconnect the connector wire from FAN connected to con- nector CN209 of the MAIN BOARD assembly. (See Fig.18) (2) Remove the two screws P attaching the SPEAKER TER- MINAL. (See Fig.19) (3) Remove the one screw Q attaching the VIDEO 1 jack.
  • Page 12 3.1.9 Removing the DSP BOARD assembly (See Fig.21, 22) (1) Disconnect the card wire from DSP BOARD assembly con- CN320 CN205 nected to connector CN203, CN204 CN206 of the MAIN BOARD assembly. (See Fig.21) (2) Disconnect the connector wire from DSP BOARD assem- bly connected to connector CN205 CN320...
  • Page 13 3.1.10 Removing the MAIN BOARD assembly (See Fig.23, 24) (1) Remove the one screw W attaching the BRACKET BOARD. (See Fig.23) (2) Remove the four screws X attaching the JACK BRACKET. (See Fig.24) (3) Remove the one screw Y attaching the MAIN BOARD as- sembly.

  • Page 14: Adjustment

    SECTION 4 ADJUSTMENT EXTENTION CABLE When do the operation check or do the confirm SPECIAL MODE, please use the extention cables connect to Main amp board and Power supply board. 1. EXTTHL1-7P × 2 pcs 2. EXTTHL1-6P × 1 pc SPECIAL MODE MODE NAME CODE...

  • Page 15: No.mb623)1

    (No.MB623)1-15...
  • Page 16 Victor company of Japan, Limited Audio/Video Systems category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB623) Printed in Japan...

  • Page 17: Parts List

    PARTS LIST TH-L1A,TH-L1US,TH-L1UB TH-L1UJ,TH-L1UG,TH-L1UN * All printed circuit boards and its assemblies are not available as service parts. - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 6 Electrical parts list (Block No.01~04) 3-16 Packing materials and accessories parts list (Block No.M3)
  • Page 18 Exploded view of general assembly and parts list Block No. HDMI board Wire guard board FL board Wire stoper board Power board Main bo...
  • Page 19 HDMI board Digital in board DSPboard Wire stoper board Main board...
  • Page 20 General Assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local  GV10364-001A FRONT PANEL E69897-002 CUSHION (x2) GV20472-005A FRONT LENS GV40745-001A DOOR SPRING (x2) QYSDSF2608ZA TAP SCREW M2.6 x 8mm(x2) GV31015-001A JACK DOOR GV31016-001A POWER BUTTON GV31017-001A RING LENS (x2) GV31018-001A...
  • Page 21 Symbol No. Part No. Part Name Description Local  GV40313-002A FELT SPACER (x2) GV30893-001A NUMBER LABEL  QMPG150-244-JC POWER CORD(AST) 2.44m BLACK QMPK200-200-JD POWER CORD(EK) 2m BLACK US,UJ,UG,UN  QMPN160-200-JD POWER CORD(EK) 2m BLACK  QAR0456-001 QMFZ059-2R5-E FUSE F 101 2.5A A,UB ...

  • Page 22: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1] D2001 MA111-X SI DIODE  Symbol No. Part No. Part Name Description Local D2101 MA111-X SI DIODE D2200 UDZW3.9B-X Z DIODE D2201 UDZW3.9B-X Z DIODE IC102 TAS5086DBT-X...
  • Page 23  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C1205 QETN1VM-477Z E CAPACITOR 470uF 35V M C1508 NCB31HK-472X C CAPACITOR 4700pF 50V K C1206 QETN1VM-477Z E CAPACITOR 470uF 35V M C1509 NCB31HK-472X C CAPACITOR 4700pF 50V K...
  • Page 24  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C2351 QETN1HM-106Z E CAPACITOR 10uF 50V M C2907 NCF31AZ-105X C CAPACITOR 1uF 10V Z C2352 NCB21AK-225X C CAPACITOR 2.2uF 10V K C2908 NCF31AZ-105X C CAPACITOR 1uF 10V Z...
  • Page 25  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C3300 NCB31HK-104X C CAPACITOR 0.1uF 50V K R1224 NRSA63J-393X MG RESISTOR 39kΩ 1/16W J C3301 NCB31HK-104X C CAPACITOR 0.1uF 50V K R1225 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 26  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R1705 NRSA63F-333X MG RESISTOR 33kΩ 1/16W F R2456 NRSA63J-101X MG RESISTOR 100Ω 1/16W J R1706 NRSA63J-392X MG RESISTOR 3.9kΩ 1/16W J R2500 NRSA63J-331X MG RESISTOR 330Ω...

  • Page 27: Power Board

    Power board  Symbol No. Part No. Part Name Description Local Block No. [0][2] R3101 NRSA63J-750X MG RESISTOR 75Ω 1/16W J R3103 NRSA63J-102X MG RESISTOR 1kΩ 1/16W J  Symbol No. Part No. Part Name Description Local R3115 NRSA63J-223X MG RESISTOR 22kΩ...
  • Page 28  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C109 QEZ0657-226Z E CAPACITOR 22uF 35V M R231 QRE141J-101Y C RESISTOR 100Ω 1/4W J C110 NCB31HK-471X C CAPACITOR 470pF 50V K R232 NRSA63J-221X MG RESISTOR 220Ω...
  • Page 29  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local HS250 GV40614-001A HEAT SINK R2084 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J J900 QNZ0689-001 PIN JACK R2085 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J K900 NQR0007-002X FERRITE BEADS...
  • Page 30  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R128 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J Q801 RT1P441C-X DIGI TRANSISTOR R130 NRSA63J-0R0X MG RESISTOR 0Ω 1/16W J Q801 or UN2113-X TRANSISTOR R131 NRSA63J-0R0X MG RESISTOR...
  • Page 31  Symbol No. Part No. Part Name Description Local K351 NQR0502-001X FERRITE BEADS K352 NQR0502-001X FERRITE BEADS K353 NQR0502-001X FERRITE BEADS K354 NQR0022-002X FERRITE BEADS K501 NQR0502-001X FERRITE BEADS K701 NQR0022-002X FERRITE BEADS K702 NQR0022-002X FERRITE BEADS K703 NQR0022-002X FERRITE BEADS K704 NQR0022-002X FERRITE BEADS...
  • Page 32 Packing materials and accessories parts list Block No. <Except TH-L1UJ> No additional / supplemental order of WARRANTY CARDs are available. US,UN A1, A3, A1, A2, A4, A5, A6 A5, A6 A7, A7, A8 A8, A10 UB,UG A1, A2, A5, A6 A7, A19(Only UB) The parts without symbol number are not service.
  • Page 33 Packing and Accessories(Except TH-L1UJ) Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  GVT0206-006A INST BOOK GVT0206-007A INST BOOK CHI(PEKIN) US,UB,UN GVT0206-009A INST BOOK ARA PER ------------ WARRANTY CARD BT-56017-1 ------------ WARRANTY CARD BT-56016-1 RM-STHL1A REMOCON ------------ BATTERY 1.5V(x2) QAM0944-001...
  • Page 34 Packing materials and accessories parts list Block No. <Only TH-L1UJ> A1, A2, A8 A10 The parts without symbol number are not service. 3-18...
  • Page 35 Packing and Accessories(Only TH-L1UJ) Block No. [M][4][M][M] Symbol No. Part No. Part Name Description Local  GVT0206-006A INST BOOK QAM0944-001 PIN CABLE QAM0112-002 CONVERSION PLUG  ------------ BATTERY 1.5V(x2) QAM0955-002 iPod CABLE RM-STHL1A REMOCON ASL5WTHL1-EB01 SPK WITH BOX-W ASL5MTHL1-EB01L SPK WITH BOX-FL ASL5MTHL1-EB01R SPK WITH BOX-FR ASL5UTHL1-EB01L...
  • Page 36 SCHEMATIC DIAGRAMS DIGITAL MEDIA SYSTEM TH-L1A,TH-L1US,TH-L1UB TH-L1UJ,TH-L1UG,TH-L1UN CD-ROM No.SML200707 SP-THL1W SP-THL1F SP-THL1F SP-THL1S SP-THL1S SP-THL1C AX-THL1 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)
  • Page 37 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 38: Block Diagram

    Block diagram IC53 DSP section Y1 to Y4, Z1 to Z4 HDMI MA0 to 11, MDQ0 to 15 CABLE EQULIZER With SWITCHING D1.2V SCL_SINK, SDA_SINK IC302 IC505 BA0, BA1, MCK, DQM0, DQM1,NCSM, NRAS, NCAS, NWE MONITOR X301 D1.2V REG. HPD_SINK SDRAM HS5V 27MHz...
  • Page 39 Standard schematic diagrams Primary section GVA10147-A1 T101 QQS0374-001 C211 1/2W POWER PWB CP211 FL SW Q211 TH101 R217 100P/50 ICP-N10-T QAD0141-8R0 KTC3265/Y/-X D101 6.5V 6.4V D3SBA60 D211 FR104S-T5 7.1V L101 L102 C215 100P/1000 FL VH Q212 Q213 D214 2SA1530A/QR/-X (1/4W) MAINS 26.8V 26.8V...
  • Page 40 System control section TO DSP TO VIDEO TO HDMI TO DSP Q2450 D2353 RTN1N140C-X MA111-X D2354 MA111-X D2351 1N4003S-T5 D2355 B3.3V Q2352 KTA1271/OY/-T MA111-X IC235 D2352 MA111-X 5.9V 5.8V D2357 MM1565AF-X MA111-X C2352 R2352 Q2200 5.9V R2351 R2354 IC245 KTC3203/OY/-T AK5358AET-X 5.2V C2450...
  • Page 41 Digital amp section SAFETY3 +33V TO Micom BLOCK POWER AMP. PGND EP101 EP101 QNZ0136-001Z IC103 TAS5142DDV-X 12.1V R1602 R1601 12.0V GVDD_B GVDD_A C1621 3.3V 11.7V /OTW BST_A 270P/50 C1615 R1606 C1611 C1614 16.5V 33.2V R1604 PVDD_A L1602 1/10W C1607 1/4W B1001 3.3V 33.2V...
  • Page 42 Audio/Video section AUX1 AUX2 COMP OUT J2700 QNN0828-001 C2600 J2600 1/10 QND0156-001 C2803 C2806 R2601 C2800 J2800 QNN0782-001 R2700 R2701 R2704 R2705 180k 180k 180k C2601 C2810 0.01/50 1/10 R2600 180k R2803 C2809 VIDEO IN C2700 C2701 C2704 C2705 # FOR B,E,EN, EV,EE ONLY IC280 (S-VIDEO/...
  • Page 43 FL board and Coaxial board section GVA10147-A2 GVA10147-A3 DI800 QLF0185-001 C800 0.1/50 C905 C801 0.1/50 47/25 IC900 C802 C907 TC74VHC04FT-K-X 0.1/50 C803 C804 0.1/50 3.3V R902 1.7V 3.4V C805 2.1V 3.4V 100p C903 C806 1.2V 3.4V 3.4V J900 K900 QNN0481-001 R901 NQR0369-004X C901...
  • Page 44 DSP section (1/3) K354 48MHz NQR0022-002X C370 D1.2V REG. C328 0.01 DVDPWR 3.9V Cont D1.2V P3.3V 1.2V C302 47/4 IC302 MM1701CH-X CN301 for ICE D301 DGND CPURST RESET EEPROM R306 SCLK C564 DGND R307 SDATA DGND UCLK EXDT8 R353 (UCLK) S2CLK EXDT8 216 IC510...
  • Page 45 DSP section (2/3) SDRAM FLASH ROM IC505 IC509 SG32A90TFIR3 K4S641632K-UC75 EXADT15 0.4V 0.5V EXADR16 C560 3.3V EXADT14 0.7V 3.3V 2.8V 2.7V MDQ15 MDQ0 */BYTE DQ15 EXADT13 0.5V C551 3.3V VDDQ VSSQ EXADT12 0.7V 0.8V EXDT15 MDQ1 2.8V 2.7V MDQ14 DQ14 EXADT11 0.7V 1.5V...
  • Page 46 DSP section (3/3) P3.3V DGND R859 R860 Q801 UN2113X IC801 MM1565AF-X KRA104S-X R891 Vout CN801 QGF1016F8-05W IC891 Cont C819 CN811 QGA2001F6-05X R819 R811 1/2W K811 R812 K812 1/2W LVA10626-641B (3/3) NOTES VOLTAGES ARE DC-MEASURED WITH A DIGITAL VOLT METER WITHOUT INPUT SIGNAL. NI STANDS FOR NOT INSERTED PARTS.
  • Page 47 HDMI section R2083 Shield L2004 NQR0597-001X C2063 NI TX2+ L2003 TX2GND NQR0597-001X TX2- TX1+ L2002 TX1GND R2003 NQR0597-001X R2002 TX1- 4.7k REXT TX0+ C2053 TX0GND L2001 C2051 NQR0597-001X ACKN BDT2P TX0- ACKP BDT2N TXC+ TXCGND ADT0N IC53 BDT1P TXC- TP2027 CXB1442R TP2028 ADT0P...

  • Page 48: Printed Circuit Boards

    Printed circuit boards Power board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) Q212 Q203 C122 C204 C291 R217 D203 FC102...
  • Page 49 Main board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) forward side reverse side J1001 Q1103 C1042 C1407 C1507 C1107 C1207...
  • Page 50 DSP board Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) R104 R103 R129 R109 Q101 C291 R110 CN301 C352 forward side R373...
  • Page 51 Victor Company of Japan, Limited Audio/Video Systems Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MB623SCH)

This manual is also suitable for:

Th-l1ujTh-l1ugTh-l1unTh-l1usTh-l1ub

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