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BBK LT3709S Service Manual

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Summary of Contents for BBK LT3709S

  • Page 1 SUBJECT: MODEL NO:JL321/371/401-XP2 REVISION: A1 JL321/371/401-XP2 DOC.NO: PAGE 1 OF 49 Service Manual REVISION STATUS EFFECTIVE DATE: REV. PAGE … COPY TO All CONTENTS APPROVED BY/ CONCURRED BY/ REVIEWED BY/ PREPARED BY/...
  • Page 2 LT3709S Service Manual...
  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. Precautions and Safety Notices ································· 4 2. S p e c i f i c a t i o n · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5 3.
  • Page 4: Precautions And Safety Notices

    1. Precautions and Safety Notices Prior to using this service manual,please ensure that you have carefully followed all the procedures outlined in the user's manual for this product. (1) Read all of these instructions. (2) Save these instructions. (3) Follow all warnings and instructions a marked on the product. (4) Unplug this product from the wall outlet before cleaning.Do not use liquid cleaners or aerosol cleaners, use a damp cloth for cleaning.
  • Page 5: Specification

    2. Specification JL321 panel specification: Item Specifications Display pixels 1366 (H) x 768 (V) pixels ( 1 pixel = 1 RGB cells ) Display Area 714.96mm (H) x 404.6mm (V) Pixel Pitch 0.1730mm (H) x 0.5190mm (V) Display Colors 16.77M Pixel Arrangement R+G+B vertical stripe Brightness...
  • Page 6 Panel Model No. LTA400W2-L01 Display pixels 1366 (H) x 768 (V) pixels ( 1 pixel = 1 RGB cells ) Display Area 885.168mm (H) x 497.664mm (V) 0.648 (H) x 0.216 (W) Pixel Pitch Display Colors 16.7M Pixel Arrangement R+G+B vertical stripe Brightness 500cd/m typical...
  • Page 7 HDMI2 HDMI Digital RGB +Digital HDMI 19 Pin HDMI2 Audio Analog RGB D-SUB 15 Pin VGA VGA+ L/R Earphone AUDIO L/R Audio STEREO AC IN AC Power IN AC 100~240V YC14 AC IN Note: A. SCART connector B. HMDI connector is a type A receptacle for video/audio mode.
  • Page 8 1. TMDS Data 2+ 9. TMDS Data 0- 17. CEC/GND 2. TMDS Data 2 shield 10. Clock + 18. +5V Power 3. TMDS Data 2- 11. Clock shield 19. Hot Plug Detect 4. TMDS Data 1+ 12. Clock - 5. TMDS Data 1 shield 13.
  • Page 9 Connector HDMI x 1 Analog HD15 PC Signal (RGB) Format R, G, B Analog Level/Impedance 0.7Vp-p / 75Ω DDC 1/2B Compliant with Revision 1.0 Sync H/V separate 3V TTL level / 1kΩ Frequency Fh = 31~80 kHz Fv = 50~75 Hz Maximum Pixel Clock 135 Mhz Connector...
  • Page 10 Video & S-Video AV Timing V FREQ H FREQ STANDARD RESOLUTION NTSC 15.734 12.65 PAL(B,G,H,D,I) 15.625 14.50 SECAM 15.625 14.50 4.43NTSC 15.734 12.65 PAL-M 15.734 12.65 PAL-N 15.625 14.50 HDTV/Component AV Timing SDTV 525i 720x525 15.735 SDTV 625i 720x625 15.625 SDTV 480p 720x480 31.5...
  • Page 11: Front Panel Function Control Description

    3. Front Panel Function Control Description Operation, Adjust and Programming...
  • Page 15 The operation of each OSD controls is described as following table: Menu Options Sub-Options Function and Description Picture Mode Vivid →Standard Press repeatedly for different picture modes: Cinema Vivid →High-Bright Cinema Sport → → → →User. Sport → →User. Contrast 0…100 (80) Fine tune the contrast.
  • Page 16 Osd Transparent Off/On Press Off/On to control the translucence of the OSD on-screen menus’ background. Default Reset to default Reset the items in the setup menu except value. the protected-items. Region Selection Western Europe, Use “Left/Right” keys to select the region Searching Auto search To select and confirm this selection, it will...
  • Page 17: Adjusting Procedure

    4. Adjusting Procedure ITEM Equipments Requiremen Procedure and SPEC Program Menu. VIDEO Play DVD Screen is clear and fluent adjustment Video Cable Set DVD to interlaced output S-VIDEO Play DVD Screen is clear and fluent S-Video Cable Set DVD to interlaced output Play DVD(Y,Cr,Cb) Screen is clear and fluent...
  • Page 18 WINDOWS. Play DVD test disc 1. Select SOURCE then choose VIDEO or VIDEO ESSENTIALS SVIDEO. OVERSCAN (6%) S-Video Cable Set DVD to 2. Sending the signal from DVD test disc Video Cable interlaced output (eighth paragraph) 3. Watch the screen to check if sees the block screen within SAFE ACTION.
  • Page 19 Audio adjustment Pattern Generator Any Pattern 1. Select SOURCE Sound input 2. Then press MENU KEY enter AUDIO adjustment item. External connect left-right trumpet (10~15W/4Ω) a. Volume 1. ←,→Key Set the sound volume. 2. Check if the action is normal. b.
  • Page 20: Trouble Shooting Flow Chart

    5. Trouble Shooting Flow Chart STEP 1. No Display ( Black ) Change AC Check AC LED ON Socket Fuse Socket ? Check LCD TV Video& Push the power Audio switch ON/OFF Function Check the D-SUB 37Pin board CN3- LED Color change ? Pin7 Make sure the...
  • Page 21 CN3-PIN5 Check the connection Change AD Active low(See cable Signal Board BOX Panel SPEC.) ? Change the LCD Display ? Panel Change AD Board Check Video& Display ? Audio Function Change AD Check Video& Board BOX Audio Function...
  • Page 22 STEP 2. Check Video& Audio Function No TV,VIDEO and VGA Check Picture Video& Audio Function Change AD Board BOX STEP 3. No Audio Check Check D-SUB Video& Check 37pin Audio Speaker Function CON4 Change AD Change Speaker Board BOX...
  • Page 23: Exploded Diagram And Spare Parts List

    6. Exploded Diagram and Spare Parts List JL321...
  • Page 24 JL371...
  • Page 25 JL401...
  • Page 26: Block And Schematic Diagrams

    7. Block and Schematic Diagrams...
  • Page 27 HOLE/GND HOLE/GND HOLE/GND HOLE/GND FB-300-OHM-2000MA 200PH-9LT FB-300-OHM-2000MA +24V SB5V FB-300-OHM-2000MA 220uF/16V 0.1uF 0.1uF 150R SB5V SB5V 6,9,10,11 LVDSVDD +12V VPANEL_IN HEADER 2x2-2.54 2X02-254-HW VPANEL_IN 220uF/16V 0.1uF 0.1uF AO4411-SO8 0.1uF 0.1uF HEADER 2x2-2.54 AO4411-SO8 100uF/25V 0.1uF 0.1uF 0.1uF UP3_0 TO252 MMBT3904 LO = >...
  • Page 28 TP10 SCART_FB SCART_FB TP11 27MHZ SB33B 27MHZ SB5V XTALI 27MHz XTALO HDMIMCLK HDMIMCLK NC/0 HDMIBCLK HDMIBCLK HC-49C H DMILRCK HDMILRCK 22pF 22pF HDMISD0 HDMISD0 LVDS_GND HDMISD1 HDMISD1 HDMISD2 HDMISD2 HDMISD3 HDMISD3 AU DIO_GND VI[0..23] AUDIO_GND VI[0..23] AADCVSS AADCVSS LVDS_GND HDMIODCK LVDS_GND HDMIODCK VFE_GND...
  • Page 29 NORMAL ANALOG POWER STANDBY ANALOG POWER ASB18A ASB18A XTALVDD AVICM XTALVDD 120-0603 XTALVDD 120-0603 PLLVDD1 ADCV DD 10uF/10V ADCVDD 0.1uF C0805 AVICM AVICM 10uF/10V 4.7uF 10uF/10V 4.7uF AU DIO_GND PWM2VREF C0805 C0805 0.1uF C0805 C0805 0.1uF PWM2VREF LVDS_GND LVDS_GND DA CFS LVDS_GND LVDS_GND PWM2VREF...
  • Page 30 MT8202 DIGITAL POWER & DECOUPLING SB33A DV18A SB18A C107 C108 0603 PUT ON NEARLY BGA 0.1uF 0.1uF SB18A C109 C110 C111 C112 C113 3300pF 0.1uF 0.1uF 0.1uF 0.1uF 0603 PUT ON NEARLY BGA C114 C115 C116 0.1uF 10nF 3300pF 0603 PUT ON NEARLY BGA C117 C118 C119...
  • Page 31 DV25B DV25B D1V25 F_ D0 A_RA3 D_RA3 F_ D1 0Rx4 A_RA2 D_RA2 D _DQ0 D_DQ15 F_ D2 IOA1 DQ15 A_RA1 D_RA1 D_RA3 F_ D3 IOA0 VDDQ VSSQ A_RA0 D_RA0 D _DQ1 D_DQ14 D_RA2 F_ D4 IOA3 DQ14 D _DQ2 D_DQ13 D_RA1 F_ D5 IOA2...
  • Page 32 P3V3 R462 P3V3 P3V3_A HDMI_PLUGPWR-1 MMBT3904 R463 HP-1 R101 C229 C408 0.22uF C409 C410 C411 C412 C413 C414 C415 C416 MMBT3904 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF DD C_SCL1 C417 R100 D DC_SDA1 0.47uF HDMI_PLUGPWR-1 EEPROM 24C02/CODE PLUGPWR-1 1N4148 HDMI_PLUGPWR-1...
  • Page 33 P3V3 AIC1117-SOT223-GOI-123 DV33B AZ1117-1.8V/adj DV33B VCC18 120-0603 P3V3 120-0805 VCC18 C202 C203 C204 C205 C206 C207 C208 C209 C429 C430 EC26 EC27 0.1uF 1000pF 0.1uF 1000pF 0.1uF 1000pF 0.1uF 1000pF 0.1uF 1000pF EC28 C210 47uF/25V 47uF/25V 47uF/25V 0.1uF 110_1% AVCC C213 C214 C215...
  • Page 34 AVCVBS1 SPK_R_OUT+ AV_SY1 AV_SY0 AV1-R VGA-L AVV50 AVV33 SPK_L_OUT+ 5V-T TU_VCC SPK_R_OUT- AVSC1 AVSC0 SCART1-R HDMI-R SPK_L_OUT- AVPR0N AVPR1P AOUT-L SCART_FB 120-0805 TU_SDA PHONE_A_L_O AVPR0P AVPR1N SCART2-R HDMI-L SCT_A_L SCT1_FS TU_SCL PHONE_A_D_O AVPB0N AVPB1P YPBPR1-R AV1-L SCT2_FS C258 TU_SIF PHONE_A_R_O AVPB0P AVPB1N VGA-R...
  • Page 35 RED+ RED+ R ED- RED- GREEN+ GREEN+ GREEN- GREEN- 1N4148 BLUE+ NEARLY VGA CON NEARLY MT8202 IC BLUE+ BLUE- BLUE- VGA_PLUGPWR VGA_PLUGPWR VGASOG VGASOG R261 R262 C328 10nF RED+ VGA_PLUGPWR VG AHSYNC# VGAHSYNC# 3 R263 VGAVSYNC# VGAVSYNC# 3 R264 C329 R265 R266 R267...
  • Page 36 AUDIO DAC AUDIO ADC TO MT8202 +12V +12VAUDIO OP5V ADCVA ADCVD DV33B ADCVL DACVA 120-0805 +12VAUDIO 120-0805 DACVA 120-0603 ADCVA R313 ADC VD 120-0603 ADCVL DACVA 120-0603 EC37 C346 EC77 C441 AOSDATA1 R314 R315 AUSPL 47uF/25V 47uF/25V SDATA AOUTL EC38 C347 C348 C349...
  • Page 37 +24V +24V-A FB-300-OHM-2000MA FB-300-OHM-2000MA +24V-P +24V-A R385 10R-1206 C371 EC58 EC59 C372 C373 0.1uF-0805 220uF/50V 220uF/50V 0.1uF-0805 0.1uF-0805 +24V-A MMBT3904 R388 +24V-P +24V-A +24V-A MMBT3904 MUTE_AMP R389 HIGH --> MUTE R437 R390 LOW --> NO MUTE R391 C375 NC/100K NC/0.1uF R392 PHONE_D AUSPR...
  • Page 38 VIDEO I/F CVBS IN AVCVBS1 AV1CVBS AVSY0 SCT1_AV SCT1_AV SCT1_AV AVSC0 SCT1_SC SCT2_AV SCT2_AV AVSY1 SCT2_AV AVSC1 SCT2_SC S-Video IN SCT1_SC SCT1_SC SCT2_SC SCT2_SC RGB IN AVV50 AVV33 SCT1_GRN SCT1_GRN 2 CON1 CON2 CON3 SCT1_BLU SCT1_BLU AVCVBS1 AV_R AVVGA_L SCT1_RED SCT1_RED AVSY1 AVSY0...
  • Page 39 SCART1 I/F CON4 SCT1_G_IN SCT1_GRN SCT1_AV_IN SCT1_AV SCT1_AUR_IN SCT1_AUL_IN CVBS+SV+SCTSOG IN SCT1_AUR_OUT SCT1_AUR_IN SCT1_AV SCT1_AV SCT1_AUL_OUT SCT1_SC SCT1_SC GNDA 75R_1% 15pF 75R_1% 330pF 0.01uF 0.01uF SCT1_B_GND RGB IN SCT1_AUL_IN 0801 0801 SCT1_B_IN SCT1_G_GND SCT1_AVI_GND SCT1_GRN SCT1_GRN 1 SCT1_FS_IN SCT1_BLU SCT1_BLU SCT1_G_GND SCT1_RED SCT1_RED...
  • Page 40 CON6 YPBPR INPUT VIDEO I/F CVBS IN Y0_ IN AV1CVBS YPbPr Video Input AV1CVBS Y0_GND Component IN RCA 1X1 GREEN Y0_ IN AVY0P PB_IN AVPB0P PR_IN AVPR0P AVY0P AVY0P CON7 AVY0N AVY0N AVPB0P AVPB0P AVPB0N AVPB0N PB_IN AVPR0P AVPR0P 75R_1% 330pF 75R_1% 330pF...
  • Page 41 IR/LED Board 0.1uF IR-OUT LED_O LED_G IR-SENSOR 10uF-0805 CON5 Hous5P-1.0h LED_O MMBT3904 MMBT3904 DIP LED-D3 LED_G MMBT3904 Title IR SENSOR PCB Size Document Number GF371-XU Date: Tuesday , December 20, 2005 Sheet...
  • Page 42 Keypad Board 0.1uF 4.7K 4.7K 4.7K 4.7K 4.7K 4.7K 4.7K POWER-ON SOERCE MENU POWER-ON CH-UP CH-DOWN VOL-UP VOL-DOWN SOURCE MENU CON9 Hous 9P-1.0 CH-UP CH-DOWN VOL-UP VOL-DOWN 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V 5.6V Title KEYPAD PCB Size Document Number GF371-XU Date: Friday , September 30, 2005...
  • Page 43 AV AUX Board S-Video Input CVBS FB-40-0805-700MA FB-40-0805-700MA LINE1 LINE2 FRONT_S_CHROMA FRONT_S_LUMA LINE3 LINE4 12pF 12pF RClamp0504F DIN4 FB-40-0805-700MA FRONT_A_R FRONT_A_R_IN FB-40-0805-700MA RCA JACK CVBS FRONT_COMPOSITE 12pF RCA JACK 12pF FB-40-0805-700MA AV Input FRONT_A_L FRONT_A_L_IN RCA JACK 12pF Audio Input PHONE_A_D PHONE_A_D_O 0-R0603...
  • Page 44 D-SUB 37 PIN Board 200PHD Series 2X8 (16pin) 200PHD Series 2X7 (14pin) CON1 VCCSB CON2 SW7-VOL-DOWN PHONE_A_D_O PHONE_A_L_O SW6-VOL-UP SW5-CH-DOWN SW4-CH-UP SW3-MENU FRONT_A_L_IN PHONE_A_R_O SW2-SOURCE SW1-POWER LED_G LED_O FRONT_COMPOSITE FRONT_A_R_IN IR-OUT LTDC_ADDR LTDC_INT LTDC_CLK FRONT_S_CHROMA FRONT_S_LUMA LTDC_DATA 200PHD-14LT 200PHD-16LT CTRL. Key AU X AV 200PHD Series 2X4 (8pin) SPK_R_OUT+...
  • Page 45: Pcb Layout Diagrams

    8. PCB Layout Diagram Main Board (Component Side Top)
  • Page 46 Main Board (Component Side Bottom) IO Board L1 component side...
  • Page 47 IO Board L2 GND (COMP.) IO Board L3 VCC (COMP.) IO Board L4 soloer side (BOT.) Keypad Board (Component Side Top) Keypad Board (Component Side Bottom) IR/LED Board (Component Side Top)
  • Page 48 IR/LED Board (Component Side Bottom) AUX AV Board (Component Side Top)
  • Page 49 AUX AV Board (Component Side Bottom) D-SUB 37 Pin Board (Component Side Top)
  • Page 50 D-SUB 37 Pin Board (Component Side Bottom)