JVC LT-19DB1BU/AX Service Manual
  1. Manuals
  2. Brands
  3. JVC Manuals
  4. LCD TV
  5. LT-19DB1BU/AX
  6. Service manual
JVC LT-19DB1BU/AX Service Manual

JVC LT-19DB1BU/AX Service Manual

Integrated digital terrestrial/satellite lcd television
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
SERVICE MANUAL
INTEGRATED DIGITAL TERRESTRIAL/SATELLITE LCD TELEVISION
5 S ERVICE MANUAL
2009
YA697<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-19DB1BU

TABLE OF CONTENTS

COPYRIGHT © 2009 Victor Company of Japan, Limited
/AX
No.YA697<Rev.001>
2009/5

Advertisement

Table of Contents
loading

Related Manuals for JVC LT-19DB1BU/AX

Summary of Contents for JVC LT-19DB1BU/AX

  • Page 1: Table Of Contents

    SERVICE MANUAL INTEGRATED DIGITAL TERRESTRIAL/SATELLITE LCD TELEVISION YA697<Rev.001> 2009 5 S ERVICE MANUAL LT-19DB1BU COPYRIGHT © 2009 Victor Company of Japan, Limited TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 Items Contents Dimensions ( W × H × D ) 47.0 cm × 36.70 cm × 16.0 cm [47.0 cm × 33.5 cm × 7.3 cm (Without stand)] Mass 5.6 kg [4.8 kg (Without stand)] Power Input AC220V - AC240 V, 50 Hz Power Consumption 50 W (Standby: 0.7 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 1.3.1 PRECAUTIONS FOR TRANSPORTATION 1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL) When transporting the unit, pressure exerted on the internal LCD (1) Avoid placing the unit under direct sunlight over a panel due to improper handling (such as tossing and dropping) prolonged period of time.

  • 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 LCD (Liquid Crystal Display) panel that occupies little space, instead of using the conventional CRT(Cathode Ray Tube). This panel adopts "normally white" mode where the transmittance or reflective rate is maximum, and the screen is white when no voltage is applied.

  • 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 CORD GUIDE REAR COVER SIDE SHIELD MAIN PWB POWER UNIT MAIN SHEILD FRONT BRACKET STAND LCD PANEL BLUE LED MODULE FRONT CABINET IR PWB KEY PWB CONTROL BASE CONTROL KNOB Fig.3-1 (No.YA697<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 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) ......................3-10 KEY P.W. BOARD ASS'Y (HU-72200002) ...................... 3-10 PACKING ................................... 3-11 PACKING PARTS LIST ............................. 3-11 USING P.W. BOARD & REMOTE CONTROL UNIT P.W.B ASS'Y No. P.W.B ASS'Y name LT-19DB1BU/AX MAIN P.W.B HU-71100004 IR P.W.B HU-72200001 KEY P.W.B HU-72200002...
  • Page 17 EXPLODED VIEW (No.YA697<Rev.001>)3-3...
  • Page 18 PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS'Y (HU-71100004) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D651 HU-003100001 DIODE D1081 HU-003060190 DIODE HU-000140583 DC-DC CONV D1083 HU-0030000002 DIODE HU-000091030 LDO REGULATOR D1084 HU-003060190 DIODE...
  • Page 19 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C184 HU-001060250 C CAPACITOR 0.1uF 16V K C341 HU-001060297 C CAPACITOR 0.01pF 50V K C185 HU-001060250 C CAPACITOR 0.1uF 16V K C342 HU-001060297 C CAPACITOR 0.01pF 50V K C186 HU-001060250...
  • Page 20 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C456 HU-001060318 C CAPACITOR 0.1uF 50V C671 HU-001071190 E CAPACITOR 10uF 16V C457 HU-001060222 C CAPACITOR 4.7uF 16V C672 HU-001060219 C CAPACITOR 1000pF 50V K C458 HU-001060318 C CAPACITOR...
  • Page 21 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C925 HU-001060250 C CAPACITOR 0.1uF 16V K HU-002000437 MG RESISTOR 10kΩ C926 HU-001060219 C CAPACITOR 1000pF 50V K HU-002001163 MG RESISTOR 75kΩ C927 HU-001071224 E CAPACITOR 220uF 16V HU-002000465...
  • Page 22 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R226 HU-002000437 MG RESISTOR 10kΩ R443 HU-002000433 MG RESISTOR 0Ω R227 HU-002000437 MG RESISTOR 10kΩ R457 HU-002000417 MG RESISTOR 4.7kΩ R228 HU-002000437 MG RESISTOR 10kΩ...
  • Page 23 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R679 HU-002000502 MG RESISTOR 3.3kΩ R881 HU-002001082 MG RESISTOR 30.9kΩ R680 HU-002000527 MG RESISTOR 100Ω R882 HU-002000547 MG RESISTOR 120Ω R681 HU-002001009 MG RESISTOR 68kΩ...
  • Page 24 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local L383 NQR0154-002X FERRITE CORE RV522 HU-002110004 VARISTOR 100pF 5.6V L384 NQR0154-002X FERRITE CORE RV523 HU-002110008 VARISTOR L385 NQR0154-002X FERRITE CORE RV524 HU-002110008 VARISTOR L386 NQR0154-002X FERRITE CORE RV525...
  • Page 25 PACKING 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 ------------ POLY BAG Not supply...
  • Page 26 SCHEMATIC DIAGRAMS INTEGRATED DIGITAL TERRESTRIAL/SATELLITE LCD TELEVISION LT-19DB1BU DVD-ROM No.SML2009Q1 No.YA697<Rev.001> COPYRIGHT © 2009 Victor Company of Japan, Limited. 2009/5...
  • Page 27 LT-19DB1BU 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 28 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-19DB1BU/AX MAIN P.W. BOARD HU-71100004 IR P.W. BOARD HU-72200001 KEY P.W. BOARD HU-72200002...

  • Page 29: Wiring Diagram

    WIRING DIAGRAM LCD PANEL UNIT [LCD CONTROL PWB] LCD PANEL UNIT JP451 CN200 KEY PWB DIGITAL TUNER (SATELLITE) DIGITAL TUNER (TERRESTRIAL) F100 250V/4A CN100 JP761 MAIN PWB POWER UNIT POWER CORD SPEAKER(L) SPEAKER(R) BLUE LED MODULE IR PWB (No.YA697<Rev.001>)2-3 2-4(No.YA697<Rev.001>)

  • Page 30: 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 31: 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 RF IN R926 000/1005 MAIN PWB (12/28) RF_CVBS +5VT_ANT C922 R928 750/F/1005 L923 104p/16V/1005 BLM18PG300SN1D C939 R944 C933 220uF/16V/MVK/S 331/F/1005...
  • Page 32 MAIN PWB CIRCUIT DIAGRAM (2/28) [QPSK TUNER] U1021 R1021 000/1005 LNB_OUT MAIN PWB (27/28) 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 * To be routed pattern without VIA Hole * R1023 101/1005 R1024...
  • Page 33 MAIN PWB CIRCUIT DIAGRAM (3/28) [Power & Interface Connectors] SMW200-24C BLM41PG600SN1L [+12V] MAX.3A AMP : 1500mA +12V +5VSTB +5VSTB QPSK : 400mA 100uF/25V/BXE/S 104p/50V PANEL : 800mA BLM41PG600SN1L [+5V] 472/1005 102/1005 MAX.3.5A USB : 500mA CAM : 500mA SMPS_ON SMPS_ON MAIN PWB (25/28) 470uF/16V/MVK/S 104p/50V...
  • Page 34 MAIN PWB CIRCUIT DIAGRAM (4/28) [Power Regulation] TP22 PCB_TP10 +3V3 +3.36V, Max.2.790A NORMAL POWER STAND-BY POWER 4.7uH/SPC7040-4R7/3.5A BLM31PG601SN1 BLM31PG601SN1 TP21 TP30 TP29 PCB_TP10 PCB_TP10 PCB_TP10 +5V4STB +5VSTB 103p/50V/1005 U22 RT9167-50PB MAX 29mA VOUT 000/1005 104/1005 OPEN-SX34 106p/16V/2012 MP2307 106p/16V/2012 243/F/1005 Open_104p/16V/1005 104p/16V/1005 106p/10V/2012...
  • Page 35 MAIN PWB CIRCUIT DIAGRAM (5/28) [MICRO CTRL] System Reset +5VSTB +5VSTB KIA7042AF 103/1005 RESETn +5VSTB 101/1005 +5VSTB +5VSTB JP81 104p/16V/1005 104p/16V/1005 HPH-DS06-02 MISO 162/1005 162/1005 KEY_ADC2 MOSI RESETn 162/1005 162/1005 KEY_ADC1 104p/16V/1005 104p/16V/1005 104p/16V/1005 106p/16V/2012 OPEN-JTP1127WEM +5VSTB 104p/16V/1005 104p/16V/1005 OPEN_103/1005 +5VSTB +5VSTB VCC1...
  • Page 36 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 37 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 LBADC_IN1 LBADC_IN2 LBADC_IN2 MAIN PWB LBADC_IN3 LBADC_IN3 SCART1_ID (19/28) SCART1_ID +3V3_A LBADC_IN4 SCART2_ID SCART2_ID LBADC_IN5 MAIN PWB...
  • Page 38 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 C182 HOST_D2 +3V3_A C181 C187 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 39 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_1 330*4/1005 MDO_D1 C221 R222 C222 CI_MDI_2 MDO_D2 104p/16V/1005 121/5025 104p/16V/1005 CI_MDI_3 MDO_D3 R226 CI_MDI_4 PR222 MDO_D4 R221 R223 R224 R225 103/1005 CI_MDI_5 330*4/1005...
  • Page 40 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 C254 C257 C258 C259 SDDR_D4 PR252 100*4/1005 DDR_D4...
  • Page 41 MAIN PWB CIRCUIT DIAGRAM (11/28) [DDR2 Memory] VDDR_MEM VDDR_MEM DDR_A[12:0] C322 DDR_VRF DDR_A0 DDR_VRF 104p/16V/1005 C321 DDR_A1 104p/16V/1005 DDR_A2 DDR_A3 DDR_A4 C323 DDR_A5 U321 102p/50V/1005 MAIN PWB 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 42 MAIN PWB CIRCUIT DIAGRAM (12/28) [Douglas A/V Input] +3V3_D +1V2 +3V3_A L382 L383 C392 C394 C396 BLM18PG300SN1D BLM18PG300SN1D 104p/16V/1005 104p/16V/1005 104p/16V/1005 +3V3_A L381 BLM18PG300SN1D C397 C389 C390 C391 C398 C381 C382 C383 C384 C385 106p/10V/2012 104p/16V/1005 104p/16V/1005 104p/16V/1005 106p/10V/2012 103p/50V/1005 103p/50V/1005 104p/16V/1005 104p/16V/1005...
  • Page 43 MAIN PWB CIRCUIT DIAGRAM (13/28) [Douglas LVDS Interface] +3V3_A +5V_Module JP451 L451 12530WS-51L2 BLM18PG121SN1D TP481 PCB_TP15 L452 U112E BLM18PG121SN1D &MPEG2_ONECHIP FLI10610H R496 OPEN-33/1005 TXA0- AH29 LVTX_ODD_CH0N_DISP23 R497 OPEN-330/1005 TXA0+ AJ29 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 44 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 MAIN PWB ASS'Y (14/28) CVDD12 CVSS CVDD12...
  • Page 45 MAIN PWB CIRCUIT DIAGRAM (15/28) [VGA INPUT & SPDIF] L521 PC_B BLM18AG121SN1D D521 KDS226 U521A U521B JP521 R522 C521 OPEN-74HC14 OPEN-74HC14 RV521 D250FD015S116BY 750/F/1005 OPEN-100p/50V/1005 SV060305E101N VSYNC1 PC_VSYNC PC_VSYNC DDC_SCL VSYNC1 L522 R524 PC_G HSYNC1 BLM18AG121SN1D D522 472/F/1005 MAIN PWB (12/28) KDS226 DDC_SDA R525...
  • Page 46 MAIN PWB CIRCUIT DIAGRAM (16/28) [HDMI SWITCH] TDA9996 4:1 HDMI Switch I2C Address : 0xC0 U551 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 47 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+ 2D0+ MAIN PWB (16/28) MAIN PWB (16/28) D0_SHIELD D0_SHIELD 1D0- 2D0- 1CK+ 2CK+ CK_SHIELD CK_SHIELD 1CK-...
  • Page 48 MAIN PWB CIRCUIT DIAGRAM (18/28) [SIDE HDMI INPUT] HDMI3_INPUT TP1201 TP1202 PCB_TP10 PCB_TP10 +5VSTB +3V5_STB U1201 JP651 OPEN LD1117AL-ADJ MAIN PWB (16/28) HPD3 HP_DET HDMI3_PWR R652 OPEN-102/1005 SHIELD4 DDC3_SDA R1201 C1200 C1201 DDC_DATA DDC3_SCL 111/F/1005 106p/16V/2012 104p/16V/1005 DDC_CLK C1202 C1203 SHIELD3 HDMI_CEC 106p/10V/2012...
  • Page 49 MAIN PWB CIRCUIT DIAGRAM (19/28) [SCART1] SC1_RED SCART1_R R663 C661 SCART1_CVBS 750/F/1005 OPEN-331p/50V/1005 RV662 SV060305E101N R662 MAIN PWB (12/28) 750/F/1005 JP661 RV661 SV060305E101N SC1_GREEN SCART1_G CVBSI R664 620/F/1005 SC1_CVBSO C/LUMA GND(R) R667 C662 GND(V) R665 000/1005 SC1_FB RV664 750/F/1005 OPEN-331p/50V/1005 RGBC SC1_RED SV060305E101N...
  • Page 50 MAIN PWB CIRCUIT DIAGRAM (20/28) [SCART2] SC2_RED 8Pin(Function Select/Slow Switching) SCART2_R 9.5V ~ 12V --> 4:3 Mode 4.5V ~ 7V -->16:9 Mode 0V ~ 2V --> TV Mode RV702 R703 C701 OPEN-SV060305E101N OPEN-750/F/1005 OPEN-331p/50V/1005 16Pin(RGB Control/Fast Blanking) 1V ~ 3V -->RGB Mode 0V ~ 0.4V -->CVBS Mode SC2_GREEN SCART2_G...
  • Page 51 MAIN PWB CIRCUIT DIAGRAM (21/28) [Component In & 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 SGND SVHS_Y SV060305E101N SGND R746 OPEN-000/1005 MAIN PWB (12/28) COMP_Pb SGND RV742...
  • Page 52 MAIN PWB CIRCUIT DIAGRAM (22/28) [Audio AMP & HP AMP] MAIN AMP +12V C764 AMP_L+ 470uF/25V/BXE/S C766 C763 +3V3_A 223p/50V D761 R762 R763 103p/50V/1005 C761 C762 OPEN-MBRS130L3 5R6/F L762 R761 104p/50V 105p/50V/3216 COIL(15UH) C765 C767 R764 AD-8580 104p/50V 105p/25V C768 L761 C769 391p/50V...
  • Page 53 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 RV831 C833 SV060314B431N C831 C832 104p/50V RV832 SV060314B431N 104p/50V 106p/16V/2012 ILX232 C835 104p/50V C834 104p/50V +5VSTB +3V3_A +3V3_A R833 R834...
  • Page 54 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 MUX_TSI_D0 TS0_DATA0 PR851 TSI_D0 MUX_TSI_D0 TS0_DATA1 TSI_D1 R852 101/1005 MUX_TSI_D1 TS0_DATA1 OPEN-000*4/1005 TSI_D1 MUX_TSI_D1 TS0_DATA2 TSI_D2 R853 101/1005 MUX_TSI_D2...
  • Page 55 MAIN PWB CIRCUIT DIAGRAM (25/28) [CHANNEL POWER] DVB-T+C POWER QPSK POWER U881 LD29150PT/P-PAK 5P TP769 TP770 MAX 1.5A PCB_TP08 PCB_TP08 +3V3_TS U882 TP765 LD1117AL-ADJ +5VTA PCB_TP08 +5.03V MAX 490mA MAIN PWB (3/28) SMPS_ON C888 TP764 C884 +5V4STB PCB_TP10 C891 104p/16V/1005 R882 C892 106p/16V/2012...
  • Page 56 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 MAIN PWB (7/28) CH_TER_RESET 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 57 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 MAIN PWB (28/28) 22K_TONE D1082 OPEN-SX34 C1085 C1084 474p/50V/2012 100uF/50V/NXB +12V...
  • Page 58 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 59: 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.YA697<Rev.001>)2-63 2-64(No.YA697<Rev.001>)

  • Page 60: 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 61: Pattern Diagrams

    PATTERN DIAGRAMS MAIN PWB PATTERN [SOLDER SIDE] (No.YA697<Rev.001>)2-67 2-68(No.YA697<Rev.001>)
  • Page 62 MAIN PWB PATTERN [PARTS SIDE] (No.YA697<Rev.001>)2-69 2-70(No.YA697<Rev.001>)

  • Page 63: Ir Pwb Pattern

    IR PWB PATTERN [SOLDER SIDE] IR PWB PATTERN [PARTS SIDE] KEY PWB PATTERN [SOLDER SIDE] KEY PWB PATTERN [PARTS SIDE] (No.YA697<Rev.001>)2-71...
  • Page 64 Victor Company of Japan, Limited Display Division 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA697<Rev.001>) Printed in Japan...

Table of Contents