JVC LT-26DB1BU/AX Service Manual
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JVC LT-26DB1BU/AX Service Manual

JVC LT-26DB1BU/AX Service Manual

Integrated digital terrestrial/satellite lcd television
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SERVICE MANUAL
INTEGRATED DIGITAL TERRESTRIAL/SATELLITE LCD TELEVISION
5 S ERVICE MANUAL
2009
YA698<Rev.001>
COPYRIGHT © 2009 Victor Company of Japan, Limited
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
LT-26DB1BU

TABLE OF CONTENTS

COPYRIGHT © 2009 Victor Company of Japan, Limited
/AX
No.YA698<Rev.001>
2009/5

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  • Page 1: Table Of Contents

    SERVICE MANUAL INTEGRATED DIGITAL TERRESTRIAL/SATELLITE LCD TELEVISION YA698<Rev.001> 2009 5 S ERVICE MANUAL LT-26DB1BU COPYRIGHT © 2009 Victor Company of Japan, Limited TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 Items Contents Dimensions ( W × H × D ) 66.0 cm × 48.25 cm × 20.0 cm [66.0 cm × 44.0 cm × 9.0 cm (Without stand)] Mass 9.5 kg [8.0 kg (Without stand)] Power Input AC220V - AC240 V, 50 Hz Power Consumption 95 W (Standby: 0.8 W) TV RF System...

  • Page 3: Precaution

    SECTION 1 PRECAUTION SAFETY PRECAUTIONS (1) The design of this product contains special hardware, (6) Isolation Check (Safety for Electrical Shock Hazard) many circuits and components specially for safety After re-assembling the product, always perform an isola- purposes. For continued protection, no changes should be tion check on the exposed metal parts of the cabinet (an- made to the original design unless authorized in writing by tenna terminals, video/audio input and output terminals,...
  • Page 4 INSTALLATION 1.2.1 HEAT DISSIPATION 1.2.3 INSTALLATION REQUIREMENTS If the heat dissipation vent behind this unit is blocked, cooling Ensure that the minimal distance is maintained, as specified efficiency may deteriorate and temperature inside the unit will below, between the unit with and the surrounding walls, as well rise.
  • Page 5 HANDLING LCD PANEL 1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL) (1) Avoid placing the unit under direct sunlight over a 1.3.1 PRECAUTIONS FOR TRANSPORTATION prolonged period of time. This may cause the optical filter When transporting the unit, pressure exerted on the internal LCD to deteriorate in quality and COLOUR.

  • Page 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS FEATURES DIGITAL TUNER PICTURE MODE This TV can receive both DVB-T (Digital terrestrial broadcasting), This function can adjust the picture settings automatically. DVB-S(Digital satellite broadcasting), and Analogue terrestrial There are BRIGHT, STANDARD, SOFT and MANUAL in the broadcasting.
  • Page 7 TECHNICAL INFORMATION 2.3.1 LCD PANEL This unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of the conventional CRT (Cathode Ray Tube), as a display unit. Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where light does not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals.

  • Page 8: Disassembly

    SECTION 3 DISASSEMBLY CAUTION AT DISASSEMBLY • Make sure that the power cord is disconnected from the outlet. • Pay special attention not to break or damage the parts. • Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors. •...
  • Page 9 SIDE SHIELD REAR COVER POWER UNIT POWER MAIN PWB BRACKET MAIN SHIELD INVERTER PWB COVER PANEL BRACKET STAND LCD PANEL PANEL INVERTER BRACKET BLUE LED MODULE SPEAKER IR PWB CONTROL KNOB SPEAKER FRONT KEY PWB CONTROL CABINET BASE Fig.3-1 (No.YA698<Rev.001>)1-9...
  • Page 10 MEMORY IC REPLACEMENT • This model uses the memory IC. • This memory IC stores data for proper operation of the video and drive circuits. • When replacing, be sure to use an IC containing this (initial value) data. 3.3.1 MEMORY IC REPLACEMENT PROCEDURE 1.
  • Page 11 3.3.3 SETTINGS OF FACTORY SHIPMENT 3.3.3.1 BUTTON OPERATION 3.3.3.2 REMOTE CONTROL DIRECT OPERATION Setting item Setting position Setting item Setting position POWER CHANNEL CHANNEL VOLUME VOLUME ZOOM AUTO SUB POWER 3.3.3.3 REMOTE CONTROL MENU OPERATION (1) Picture (4) Feature Setting item Setting position Setting item Setting position...
  • Page 12 REPLACEMENT OF CHIP COMPONENT 3.4.1 CAUTIONS (1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it. 3.4.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it.

  • Page 13: Adjustment

    SECTION 4 ADJUSTMENT ADJUSTMENT PREPARATION (1) This TV is adjusted by using REMOTE CONTROL UNIT. (2) The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values. (3) Make sure that connection is correctly made AC to AC power source.

  • Page 14: Troubleshooting

    ADJUSTMENT PROCEDURE 4.7.1 VIDEO CIRCUIT Measuring Item Test point Adjustment part Description instrument WHITE Remote [White Balance] (1) Set COLOUR TEMP. to "Normal". BALANCE control unit Normal R (2) Enter the FACTRY MODE. Normal G (3) Press [ ] / [ ] key on the remote control unit Signal Normal B simultaneously to select the White balance.

  • Page 15: Parts List

    PARTS LIST CAUTION The parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified ones to secure the  safety. The parts not indicated in this Parts List and those which are filled with lines --- in the Parts No. columns will not be supplied. P.W.
  • Page 16 IR P.W. BOARD ASS'Y (HU-72200001) ......................3-11 KEY P.W. BOARD ASS'Y (HU-72200002) ...................... 3-11 PACKING ................................... 3-12 PACKING PARTS LIST ............................. 3-12 USING P.W. BOARD & REMOTE CONTROL UNIT P.W.B ASS'Y No. P.W.B ASS'Y name LT-26DB1BU/AX MAIN P.W.B HU-71100005 IR P.W.B HU-72200001 KEY P.W.B HU-72200002...

  • Page 17: Exploded View

    EXPLODED VIEW INVERTER PWB COVER (No.YA698<Rev.001>)3-3...

  • Page 18: Printed Wiring Board Parts List

    PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS'Y (HU-71100005) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D521 HU-003041002 SI DIODE D522 HU-003041002 SI DIODE HU-000140583 DC-DC CONV D523 HU-003041002 SI DIODE HU-000091030 LDO REGULATOR D524...
  • Page 19 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C166 HU-001060297 C CAPACITOR 0.01pF 50V K C337 HU-001060250 C CAPACITOR 0.1uF 16V K C181 HU-001060250 C CAPACITOR 0.1uF 16V K C338 HU-001060250 C CAPACITOR 0.1uF 16V K C182 HU-001060286...
  • Page 20 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C446 HU-001060250 C CAPACITOR 0.1uF 16V K C623 HU-001060309 C CAPACITOR 10uF 16V K C447 HU-001060286 C CAPACITOR 10uF 10V C624 HU-001060250 C CAPACITOR 0.1uF 16V K C449 HU-001060250...
  • Page 21 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C833 HU-001060309 C CAPACITOR 10uF 16V K C1102 HU-001060286 C CAPACITOR 10uF 10V C834 HU-001060318 C CAPACITOR 0.1uF 50V C1200 HU-001060309 C CAPACITOR 10uF 16V K C835 HU-001060318 C CAPACITOR...
  • Page 22 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R179 HU-002000433 MG RESISTOR 0Ω R403 HU-002001141 MG RESISTOR 57.6Ω R182 HU-002000437 MG RESISTOR 10kΩ R404 HU-002001007 MG RESISTOR 1.8kΩ R183 HU-002000417 MG RESISTOR 4.7kΩ...
  • Page 23 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R575 HU-002000433 MG RESISTOR 0Ω R755 HU-002001060 MG RESISTOR 220kΩ R577 HU-002000433 MG RESISTOR 0Ω R757 HU-002001060 MG RESISTOR 220kΩ R579 HU-002000438 MG RESISTOR 12kΩ...
  • Page 24 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R964 HU-002000527 MG RESISTOR 100Ω L703 NQR0154-002X FERRITE CORE R966 HU-002000527 MG RESISTOR 100Ω L704 NQL812K-1R8X PEAKING COIL 1.8uH K R967 HU-002000433 MG RESISTOR 0Ω...
  • Page 25 Ref No. Part No. Part Name Description Local RV704 HU-002110004 VARISTOR 100pF 5.6V RV705 HU-002110008 VARISTOR RV706 HU-002110004 VARISTOR 100pF 5.6V RV707 HU-002110008 VARISTOR RV708 HU-002110008 VARISTOR RV709 HU-002110008 VARISTOR RV710 HU-002110008 VARISTOR RV741 HU-002110004 VARISTOR 100pF 5.6V RV742 HU-002110004 VARISTOR 100pF 5.6V RV743...

  • Page 26: Packing Parts List

    PACKING 13 18 PACKING PARTS LIST  Ref.No. Part No. Part Name Description Local ------------ CARTON BOX Not supply ------------ CUSHION Not supply HU-0320200064 REMOTE CONTROL UNIT RM-C2503 ------------ BATTERY AAA/R03(x2) HU-2000000111 INST BOOK English/French/German/Italian  ------------ WARRANTY CARD HU-2030000021 HU-2000700105 CAUTION SHEET ------------...
  • Page 27 SCHEMATIC DIAGRAMS INTEGRATED DIGITAL TERRESTRIAL/SATELLITE LCD TELEVISION LT-26DB1BU DVD-ROM No.SML2009Q1 No.YA698<Rev.001> COPYRIGHT © 2009 Victor Company of Japan, Limited. 2009/5...
  • Page 28 LT-26DB1BU STANDARD CIRCUIT DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS 1.SAFETY Type No indication : Ceramic capacitor The components identified by the symbol and shading are : Metalized mylar capacitor critical for safety. For continued safety replace safety ciritical : Polypropylene capacitor components only with manufactures recommended parts.
  • Page 29 KEY PWB CIRCUIT DIAGRAM ......................... 2-65 PATTERN DIAGRAMS ................2-67 MAIN PWB PATTERN ..........................2-67 IR PWB PATTERN ............................ 2-71 KEY PWB PATTERN ..........................2-71 USING P.W. BOARD P.W.B ASS Y name LT-26DB1BU/AX MAIN P.W. BOARD HU-71100005 IR P.W. BOARD HU-72200001 KEY P.W. BOARD HU-72200002...

  • Page 30: Wiring Diagram

    WIRING DIAGRAM LCD PANEL UNIT [LCD CONTROL PWB] LCD PANEL UNIT [INVERTER PWB] JP451 DIGITAL TUNER (SATELLITE) KEY PWB DIGITAL TUNER (TERRESTRIAL) JP761 MAIN PWB 250V/6.3A POWER UNIT SPEAKER(L) SPEAKER(R) AC INLET BLUE LED MODULE IR PWB (No.YA698<Rev.001>)2-3 2-4(No.YA698<Rev.001>)

  • Page 31: Block Diagram

    BLOCK DIAGRAM P_PWM_DIM P_A_DIM PWM3 PWM_DIM P_BKLT_EN PWM2 A_DIM +24V UART1_TXD/RXD UART1 DFSYNC_IN_OUT_GPIO8 BKLT_EN PANEL 4Pin Con. SERVICE PORT PPWR PANEL_PWR LVTX_ODD RS232 LVDS_OUT U831 UART0_TXD/RXD UART0 LVTX_EVN TXD/RXD TA_A/RA_A ILX232 RESET_N RESETn_MAIN USF-T LPM_RST_N Y961 CLK IN/OUT XTAL USB_HOST USB2.0 HOST INT_OUT WM0P...

  • Page 32: Circuit Diagrams

    CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/28) [DVB-T+C TUNER] U921 FQD1116AME/BH IIC AS : Tuner : 0xC0h Analog Demod : 0x86h RF IN R926 000/1005 MAIN PWB (12/28) RF_CVBS +5VT_ANT C922 R928 750/F/1005 L923 104p/16V/1005 BLM18PG300SN1D C939 C923 R944 R952 C933 220uF/16V/MVK/S 102p/50V/1005...
  • Page 33 MAIN PWB CIRCUIT DIAGRAM (2/28) [QPSK TUNER] U1021 R1021 000/1005 MAIN PWB (27/28) LNB_OUT LNB-A TUNER1_SCL MAIN PWB (28/28) R1022 000/1005 TUNER1_SDA LNB-B D1021 +3.3V_RF-AMP OPEN-LNBTVS6-221S DNBU12111IS(V) +3.3V_RF-AMP MAIN PWB (28/28) TUNER_AGC XTAL-OUT +3.3V_TUNER +3.3V_TUNER R1023 101/1005 R1024 101/1005 TUNER_Q_P TUNER_I_P C1021 C1022...
  • Page 34 MAIN PWB CIRCUIT DIAGRAM (3/28) [Power and Interface Connectors] SMW200-24C BLM41PG600SN1L [+12V] MAX.3A +12V AMP : 1500mA +5VSTB +5VSTB QPSK : 400mA 100uF/25V/BXE/S 104p/50V PANEL : 800mA BLM41PG600SN1L 472/1005 102/1005 [+5V] MAX.3.5A USB : 500mA CAM : 500mA SMPS_ON 470uF/16V/MVK/S MAIN PWB (25/28) SMPS_ON 104p/50V...
  • Page 35 MAIN PWB CIRCUIT DIAGRAM (4/28) [Power Regulation] TP22 PCB_TP10 +3V3 +3.36V, Max.2.790A 4.7uH/SPC7040-4R7/3.5A BLM31PG601SN1 NORMAL POWER STAND-BY POWER TP21 TP30 PCB_TP10 TP29 103p/50V/1005 PCB_TP10 +5V4STB PCB_TP10 +5VSTB U22 RT9167-50PB MAX 29mA 000/1005 VOUT 104/1005 OPEN-SX34 MP2307 106p/16V/2012 106p/16V/2012 243/F/1005 106p/16V/2012 Open_104p/16V/1005 104p/16V/1005 106p/10V/2012...
  • Page 36 MAIN PWB CIRCUIT DIAGRAM (5/28) [MICRO CTRL] System Reset +5VSTB +5VSTB KIA7042AF 103/1005 RESETn 101/1005 104p/16V/1005 104p/16V/1005 +5VSTB +5VSTB +5VSTB JP81 HPH-DS06-02 OPEN-JTP1127WEM MISO 162/1005 KEY_ADC2 MOSI RESETn 162/1005 KEY_ADC1 104p/16V/1005 104p/16V/1005 104p/16V/1005 106p/16V/2012 +5VSTB 104p/16V/1005 104p/16V/1005 OPEN_103/1005 +5VSTB +5VSTB VCC1 AVCC VCC2...
  • Page 37 MAIN PWB CIRCUIT DIAGRAM (6/28) [Douglas_USB,I2C,JTAG] UART0 : PC Display Debug message UART1 : G-Probe application run at PC & Serial command +3V3_A +3V3_A U111 I2C0 : FLI_SDA1 , FLI_SCL1 (Micom,eeprom,HDMI switch, Audio Amp) R111 OPEN-ASM811REUSF-T OPEN-104/1005 I2C1 : FLI_SDA0 , FLI_SCL0 (Demode IC , LNB IC) MAIN PWB (5/28) LPM_RST_N RESET...
  • Page 38 MAIN PWB CIRCUIT DIAGRAM (7/28) [Douglas I2S and FLEX ROM CONNECTOR] +3V3_A L161 U112D BLM18PG300SN1D &MPEG2_ONECHIP FLI10610H C161 C162 LBADC_33 106p/10V/2012 104p/16V/1005 AUDIN_I2S_BCLK AUDIN_I2S_WCLK LBADC_GND AUDIN_I2S_DAT LBADC_IN1 +3V3_A LBADC_IN1 LBADC_IN2 LBADC_IN2 MAIN PWB LBADC_IN3 LBADC_IN3 SCART1_ID (19/28) SCART1_ID LBADC_IN4 SCART2_ID SCART2_ID LBADC_IN5 MAIN PWB...
  • Page 39 MAIN PWB CIRCUIT DIAGRAM (8/28) [Douglas Flash & CI Interface] +1V8 +3V3_A U182 U112C C194 SN74LVC245APWR &MPEG2_ONECHIP FLI10610H OPEN-BLM18PG300SN1D 104p/16V/1005 CI_D[7..0] HOST_D0 POD_HOST_D0/SPI_SDI HOST_D1 HOST_D0 CI_D0 POD_HOST_D1 HOST_D2 +3V3_A C181 C187 C182 HOST_D1 CI_D1 POD_HOST_D2 HOST_D3 C193 HOST_D2 CI_D2 POD_HOST_D3 Flash_WP# HOST_D4 104p/16V/1005...
  • Page 40 MAIN PWB CIRCUIT DIAGRAM (9/28) [CI Slot] TS INPUT +3V3_A VCC_CI VCC_CI +3V3_A VCC_CI +3V3_A MDO_D[7..0] CI_MDI_0 PR221 MDO_D0 CI_MDI_1 MDO_D1 330*4/1005 C221 R222 CI_MDI_2 MDO_D2 C222 104p/16V/1005 121/5025 CI_MDI_3 MDO_D3 104p/16V/1005 CI_MDI_4 PR222 MDO_D4 R226 R221 R223 R224 R225 CI_MDI_5 330*4/1005 MDO_D5...
  • Page 41 MAIN PWB CIRCUIT DIAGRAM (10/28) [Douglas DDR Interface] VDDR_MEM MAIN PWB DDR_D[31:0] DDR_D[31:0] (11/28) VDDR_MEM C251 104p/16V/1005 DDR_VRF C256 R251 +3V3_A SDDR_D2 PR251 100*4/1005 DDR_D2 C252 103p/50V/1005 1R0/2012 SDDR_D0 DDR_D0 104p/16V/1005 SDDR_D7 DDR_D7 SDDR_D5 DDR_D5 SDDR_D4 PR252 100*4/1005 DDR_D4 SDDR_D1 DDR_D1 C254 C257...
  • Page 42 MAIN PWB CIRCUIT DIAGRAM (11/28) [DDR2 Memory] VDDR_MEM VDDR_MEM DDR_A[12:0] C321 C322 DDR_A0 104p/16V/1005 DDR_VRF DDR_VRF 104p/16V/1005 DDR_A1 DDR_A2 DDR_A3 DDR_A4 C323 DDR_A5 U321 MAIN PWB 102p/50V/1005 C324 C325 DDR_A6 H5PS5162FFR-Y5 (10/28) 226p/6.3V/2012 226p/6.3V/2012 DDR_A7 U322 DDR_A8 C326 DDR_A9 DDR_D0 DDR_D16 102p/50V/1005 VREF...
  • Page 43 MAIN PWB CIRCUIT DIAGRAM (12/28) [Douglas A/V Input] +3V3_D +1V2 +3V3_A L382 L383 C394 C396 C392 BLM18PG300SN1D BLM18PG300SN1D 104p/16V/1005 104p/16V/1005 104p/16V/1005 +3V3_A L381 BLM18PG300SN1D C398 106p/10V/2012 C397 C389 C390 C391 106p/10V/2012 104p/16V/1005 104p/16V/1005 104p/16V/1005 C381 C382 C383 C384 C385 103p/50V/1005 103p/50V/1005 104p/16V/1005 104p/16V/1005...
  • Page 44 MAIN PWB CIRCUIT DIAGRAM (13/28) [Douglas LVDS Interface] +3V3_A L451 BLM18PG121SN1D +5V_Module JP451 12530WS-51L2 L452 U112E BLM18PG121SN1D &MPEG2_ONECHIP FLI10610H TP481 PCB_TP15 R496 OPEN-33/1005 TXA0- AH29 LVTX_ODD_CH0N_DISP23 TXA0+ AJ29 R497 OPEN-330/1005 LVTX_ODD_CH0P_DISP22 AF24 AH28 R498 OPEN-330/1005 TXA1- LVTX_VDD33 LVTX_ODD_CH1N_DISP21 R499 OPEN-330/1005 TXA1+ AE22 AJ28...
  • Page 45 MAIN PWB CIRCUIT DIAGRAM (14/28) [Douglas Power] +1V2 U112K &MPEG2_ONECHIP FLI10610H CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12 CVSS CVDD12...
  • Page 46 MAIN PWB CIRCUIT DIAGRAM (15/28) [VGA INPUT and SPDIF] L521 PC_B BLM18AG121SN1D D521 U521A U521B KDS226 OPEN-74HC14 OPEN-74HC14 JP521 R522 RV521 D250FD015S116BY 750/F/1005 VSYNC1 SV060305E101N PC_VSYNC PC_VSYNC C521 DDC_SCL OPEN-100p/50V/1005 VSYNC1 R524 L522 472/F/1005 PC_G HSYNC1 BLM18AG121SN1D D522 MAIN PWB (12/28) KDS226 DDC_SDA R525...
  • Page 47 MAIN PWB CIRCUIT DIAGRAM (16/28) [HDMI SWITCH] TDA9996 4:1 HDMI Switch U551 I2C Address : 0xC0 TDA9996 +3V3H R551 330/1005 AHDMI_SDA HPD1 RXA_HPD OUT_DDC_DAT R553 330/1005 AHDMI_SCL HDMI1VCC RXA_5V OUT_DDC_CLK R554 472/1005 AHDMI_SDA R555 330/1005 ATXC- R557 472/1005 AHDMI_SCL D1SDA RXA_DDC_DAT OUT_CN R556...
  • Page 48 MAIN PWB CIRCUIT DIAGRAM (17/28) [REAR HDMI INPUT] HDMI1_INPUT HDMI2_INPUT JP621 JP622 FW05050-21 FW05050-21 1D2+ 2D2+ D2_SHIELD D2_SHIELD 1D2- 2D2- 1D1+ 2D1+ D1_SHIELD D1_SHIELD 1D1- 2D1- 1D0+ MAIN PWB (16/28) 2D0+ MAIN PWB (16/28) D0_SHIELD D0_SHIELD 1D0- 2D0- 1CK+ 2CK+ CK_SHIELD CK_SHIELD 1CK-...
  • Page 49 MAIN PWB CIRCUIT DIAGRAM (18/28) [SIDE HDMI INPUT] TP1201 TP1202 HDMI3_INPUT PCB_TP10 PCB_TP10 +5VSTB +3V5_STB JP651 U1201 DC1R019JBA LD1117AL-ADJ MAIN PWB (16/28) HP_DET HPD3 HDMI3_PWR R652 OPEN-102/1005 C1200 C1201 106p/16V/2012 104p/16V/1005 SHIELD4 DDC3_SDA R1201 C1202 C1203 DDC_DATA DDC3_SCL 111/F/1005 106p/10V/2012 104p/16V/1005 DDC_CLK SHIELD3...
  • Page 50 MAIN PWB CIRCUIT DIAGRAM (19/28) [SCART1] SC1_RED SCART1_R RV662 R663 C661 SCART1_CVBS SV060305E101N 750/F/1005 OPEN-331p/50V/1005 RV661 R662 MAIN PWB (12/28) SV060305E101N 750/F/1005 JP661 SC1_GREEN SCART1_G CVBSI R664 620/F/1005 SC1_CVBSO C/LUMA GND(R) RV664 R667 C662 GND(V) R665 000/1005 SC1_FB SV060305E101N 750/F/1005 OPEN-331p/50V/1005 RGBC SC1_RED...
  • Page 51 MAIN PWB CIRCUIT DIAGRAM (20/28) [SCART2] 8Pin(Function Select/Slow Switching) SC2_RED SCART2_R 9.5V ~ 12V --> 4:3 Mode 4.5V ~ 7V -->16:9 Mode 0V ~ 2V --> TV Mode R703 C701 RV702 750/F/1005 OPEN-331p/50V/1005 SV060305E101N 16Pin(RGB Control/Fast Blanking) 1V ~ 3V -->RGB Mode 0V ~ 0.4V -->CVBS Mode SC2_GREEN SCART2_G...
  • Page 52 MAIN PWB CIRCUIT DIAGRAM (21/28) [Component In and Side A/V In] R741 OPEN-000/1005 COMP_Y SVHS_C Z741 Z742 ZMMC5V6 ZMMC5V6 R743 RV741 R744 750/F/1005 SV060305E101N 750/F/1005 JP741 MAIN PWB (12/28) TPSS-0738-3(STRAIGHT) JP742 RV743 SV060305E101N SGND SVHS_Y SGND R746 OPEN-000/1005 COMP_Pb MAIN PWB (12/28) SGND RV742 R747...
  • Page 53 MAIN PWB CIRCUIT DIAGRAM (22/28) [Audio AMP and HP AMP] MAIN AMP +12V C764 AMP_L+ 470uF/25V/BXE/S C766 C763 +3V3_A 223p/50V R762 R763 103p/50V/1005 C761 C762 5R6/F L762 D761 R761 104p/50V 105p/50V/3216 COIL(15UH) C765 OPEN-MBRS130L3 R764 AD-8580 104p/50V C767 C768 105p/25V 391p/50V L761 C769...
  • Page 54 MAIN PWB CIRCUIT DIAGRAM (23/28) [RS232] JP831 U831 THSE-0734T R831 101/1005 TXD_PC T1IN MAIN PWB (5/28) T2IN R832 101/1005 RXD_PC R1IN R2IN +5VSTB C831 C832 C833 104p/50V RV831 RV832 SV060314B431N SV060314B431N 104p/50V 106p/16V/2012 C834 ILX232 C835 104p/50V 104p/50V +5VSTB +3V3_A +3V3_A R833 R834...
  • Page 55 MAIN PWB CIRCUIT DIAGRAM (24/28) [TS Switch] TS0_DATA from TER DTT ONLY MODEL OPTION MAIN PWB (26/28) TS0_DATA[7..0] U851 SN74LVC244APWR TS0_DATA0 TSI_D0 R851 101/1005 101/1005 MUX_TSI_D0 TS0_DATA0 PR851 TSI_D0 MUX_TSI_D0 TS0_DATA1 TSI_D1 R852 101/1005 101/1005 MUX_TSI_D1 TS0_DATA1 OPEN-000*4/1005 TSI_D1 MUX_TSI_D1 TS0_DATA2 TSI_D2 R853...
  • Page 56 MAIN PWB CIRCUIT DIAGRAM (25/28) [CHANNEL POWER] DVB-T+C POWER QPSK POWER TP769 TP770 PCB_TP08 PCB_TP08 +3V3_TS U881 U882 LD29150PT/P-PAK 5P LD1117AL-ADJ MAX 1.5A C884 C888 TP765 106p/16V/2012 PCB_TP08 +5VTA 104p/16V/1005 R882 C891 C892 +5.03V MAX 490mA 121/F/1005 MAIN PWB (3/28) SMPS_ON 106p/10V/2012 104p/16V/1005...
  • Page 57 MAIN PWB CIRCUIT DIAGRAM (26/28) [OFDM Demodulator] +3V3DT +3V3DT R961 R962 OPEN-103/1005 472/1005 R963 102/1005 IF_AGC0 MAIN PWB +3V3DT IF_AGC0 TUNER0_AGC (1/28) JP961 CH_TER_RESET MAIN PWB (7/28) Near By Tuner OPEN-53014-0410 C975 C962 FLI_SCL0 104p/16V/1005 104p/16V/1005 FLI_SDA0 VDDD_3V3 VDDD_1V2 VDDDC_1V2 VDDA_3V3 R966 101/1005...
  • Page 58 MAIN PWB CIRCUIT DIAGRAM (27/28) [LNB Supply] C1085,1091,1092 are located near by U1081 C1085,1091,1092 are located near by U1081 +3V3_TS C1082 104p/50V/2012 R1081 C1081 103p/50V C1083 D1081 OPEN-222/1005 104p/50V/2012 SS14 R1083 220/1005 22K_TONE MAIN PWB (28/28) D1082 C1085 C1084 OPEN-SX34 474p/50V/2012 100uF/50V/NXB GND 21...
  • Page 59 MAIN PWB CIRCUIT DIAGRAM (28/28) [QPSK Demodulator] C1051 473p/16V/1005 C1052 473p/16V/1005 +3.3VA +3V3_TS +1V8_CH +1.8VA R1051 3092/F/1005 C1053 103p/50V/1005 TS1_DATA0 C1054 OPEN-120p/50V/1005 TS1_CLK C1055 OPEN-120p/50V/1005 TS1_DATA[7..0] TS_DO7 PR1051 TS1_DATA7 TUNER_I_P RS_DATA7 TS_DO6 470*4/1005 TS1_DATA6 TUNER_I_N RS_DATA6 MAIN PWB (2/28) TS_DO5 TS1_DATA5 RS_DATA5 TS_DO4...

  • Page 60: Ir Pwb Circuit Diagram

    IR PWB CIRCUIT DIAGRAM ROM-N338THC1-5 +5VSTB MAIN PWB (3/28) +5VSTB TP10 TP10 OPEN-000 IR_OUT TP10 IR_OUT TP10 OPEN-000 000/2012 12505WR-06A 220uF/10V/TANTAL 000/2012 SV060305E101N 105p 105p SLR124-WOS SV060305E101N IR PWB ASS'Y HU-72200001 lt-19_26dx9_sub-02_0520_2/4_0.0 (No.YA698<Rev.001>)2-63 2-64(No.YA698<Rev.001>)

  • Page 61: Key Pwb Circuit Diagram

    KEY PWB CIRCUIT DIAGRAM MAIN PWB (3/28) TP10 KEY2 TP10 KEY1 TP10 12505WR-05P SV060305E101N SV060305E101N KEY1 KEY2 OPEN-302/1005 OPEN-302/1005 271/F/1005 271/F/1005 TV/AV DHT-1105TABF DHT-1105TABF 471/1005 471/1005 MENU/OK DHT-1105TABF DHT-1105TABF 102/1005 102/1005 VOL- DHT-1105TABF 272/1005 272/1005 VOL+ STANDBY DHT-1105TABF DHT-1105TABF ADC1 SW Setting Point Center Voltage Min Voltage...

  • Page 62: Pattern Diagrams

    PATTERN DIAGRAMS MAIN PWB PATTERN [SOLDER SIDE] (No.YA698<Rev.001>)2-67 2-68(No.YA698<Rev.001>)
  • Page 63 MAIN PWB PATTERN [PARTS SIDE] (No.YA698<Rev.001>)2-69 2-70(No.YA698<Rev.001>)

  • Page 64: Ir Pwb Pattern

    IR PWB PATTERN [SOLDER SIDE] IR PWB PATTERN [PARTS SIDE] KEY PWB PATTERN [SOLDER SIDE] KEY PWB PATTERN [PARTS SIDE] (No.YA698<Rev.001>)2-71...
  • Page 65 Victor Company of Japan, Limited Display Division 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA698<Rev.001>) Printed in Japan...

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