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Sanyo LCD-22R35FHD Service Manual

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LCD-22R35FHD
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Summary of Contents for Sanyo LCD-22R35FHD

  • Page 1 LCD-22R35FHD 50 81...

  • Page 2: Table Of Contents

    CONTENTS Safety precautions………………………………………………………………………..… Alignment instructions …………………………….…….………………………………… Method of software upgrading instructions……………………………………………….. Working principle analysis of the unit……………………………….………….…………. Block diagram…………………………………..………………………………….………… IC block diagram and instruction…………………………………………………………..…… Wiring diagram ……………………………………………………………………………. Troubleshooting guide ………………………………………………………………..…… Schematic diagram………………………………………………………………………… APPENDIX-A: Main assembly list APPENDIX-B: Exploded View...

  • Page 3: Safety Precautions

    Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety precautions 1. Instructions Be sure to switch off the power supply before replacing or welding any components or inserting/plugging in connection wire.
  • Page 4 would be unable to work and no way to get it repaired. If the connection wires, connections or components fixed by the thermotropic glue need to disengage when service, please soak the thermotropic glue into the alcohol and then pull them out in case of dagmage.

  • Page 5: Alignment Instructions

    Alignment instructions 2 Adjustment equipment Digital multimeter Signal generator (54200) PC (presetting FLASH software) VG848, VG849 (VGA, YPbPr and HDMI signal generator) DVD player with HDMI output White balance apparatus (CA210) Monitor 3 Adjustment flow 3.1 Test voltage of power supply According to wiring diagram ‘9222KC4201JL’, connect main board, power board, IR board and key board correctly, switch on power supply, then press key ‘power’...
  • Page 6 3.2 Adjustment flow chart as Fig.1 Check if FLASH has been burned Product main board on line General assembly and adjustment White balance adjustment Connect to central signal source, check if each function of TV, such as omitted program, analog parameter control, etc. is normal? Check if output of earphones, speakers are normal? Input AV/S-VIDEO signal, check if each function of both channels are normal?
  • Page 7 4 Adjustment instruction 4.1 Unit adjustment 4.1.1 According to wiring diagram ‘9242KC4201JL’ , ‘9222KC4201JL’, ‘9219KC7201JL’ , ‘9224KC7001J’ or ‘9232KC7001JL’, connect main board, power board, key board and IR board correctly, switch on power supply, check if display is normal? 4.1.2 Instruction of factory menu a）First press key ‘Program source’, then press number keys “2、5、8、0”...
  • Page 8 4.2.3 White balance adjustment of YPbPr channel ADC calibration of SD mode: Input color-bar signal with format of 480i/60 Hz (VG848: Timing is 968，PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other);...
  • Page 9 adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, Press key “Menu” to be back to upper menu, set “Program source” as VGA”, input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854，PAT is 948), enter into submenu “ADC adjustment”...
  • Page 10 5 Performance check 5.1 TV port Connect RF port to central signal source, first enter into channel menu, then auto search programs, check if there is any omitted program ,output of speakers and picture are normal 5.2 AV/S-Video port Input AV/S signal to corresponding terminal respectively, check if picture and sound are normal. 5.3 YPbPr/YCbCr port Input YUV signal from signal general VG848 with YUV format listed as Table 8, check if picture and sound are normal.
  • Page 11 6 User menu setting before leaving factory Enter into factory menu, select item ‘Reset’, TV set will be preset automatically before leaving factory. Be sure to do the step after completing adjustments in factory. 7 Instruction for software burning in factory as Table 10 Table 10 Instruction for software burning in factory Instruction for...

  • Page 12: Method Of Software Upgrading Instructions

    Instruction of software upgrade Instruction of software upgrade for KC# model: 1. Save upgrade file “flash.img” into the root directory of a U disk; 2. Insert the U disk into USB port of TV set, press key “power” until TV set is in “standby”...
  • Page 13 Fig. 2 Factory menu 4. Press keys of remote control “▲”,”▼” to select item “ISP”, press key “enter” to begin updating progress, a prompt “Updating, Pls, Waiting…” is displaying, wait for a while until menu display (TV set is unable to accept other operation now), please refer to the Fig.
  • Page 14 Fig. 3 Updating prompt 5. TV set will auto-reset after completing update, according to step1 and step 2, enter into factory menu again to confirm updating completion by checking the time of update file.

  • Page 15: Working Principle Analysis Of The Unit

    Working principle analysis of the unit RF signal from antenna is sent into TUNER301 to be processed by HF-amplified and frequency mixing, then IF signal is outputted to SWF Z301 to be IF filtered to get ideal IF characteristics, then the signal is sent to main chip N101(RTD2674S)-27#,28# to be amplified by inline IF amplifier and synchronous demodulated to get CVBS.

  • Page 16: Block Diagram

    Block Diagram SPI FLASH EM6AA160TS- W25X32VSSIG-E PANEL LVDS TUNER CVBS SPEAKER YPbPR YPbPr TDA7266SA RTD2674S AUDIO TMDS AUDIO HDMI VIDEO D+/D-...

  • Page 17: Ic Block Diagram And Instruction

    IC block diagram Ｍａｉｎ　ＩＣ RTD2674S Pin List VCM_BB AVDD_BB0_3.3V HDDC0_SCL AIN_5L/LSADC6 HDDC0_SDA AIO_2R HDDC1_SCL AIO_2L HDDC1_SDA AIO_1R VGA_DDC_SCL AIO_1L VGA_DDC_SDA AIN_4R IO_3.3V AIN_4L GPIO_C8 AIN_3R GPIO_C6 AIN_3L GPIO_C5 AIN_2R STBY _CORE_1.2V AIN_2L SPI_DI AIN_1R SPI_DO AIN_1L SPI_SCK AOUT_R SPI_CS_N AOUT_L RESET_IN HPOUT_R GPIO_C4...
  • Page 18 Ｍａｉｎ　ＩＣ RTD2674S Table 1-1. RTD2674S Pin Assignments – Pin detail description (I/O Legend: A = Analog, I = Input, O = Output, P = Power, G = Ground) Pin No Pin Name Type Description Note Connect 1uF to GND VCM_BB Analog Audio Common Voltage Reference Analog 3.3V AVDD_BB0...
  • Page 19 Ｍａｉｎ　ＩＣ RTD2674S Digital I/O 3.3V VCC3_0 PAD I/O Power 3.3V 5V tolerance even when GPIO_A0 GPIO_A0 power-off 5V tolerance even when GPIO_A1 GPIO_A1 power-off Digital 1.2V, Power Down@ Core_1.2V Core Power 1.2V Power saving B_FP LVDS_Port_B_F_Pair_P B_FN LVDS_Port_B_F_Pair_N B_EP LVDS_Port_B_E_Pair_P B_EN LVDS_Port_B_E_Pair_N B_DP...
  • Page 20 Ｍａｉｎ　ＩＣ RTD2674S 5V tolerance even when GPIO_B9 GPIO_B9 power-off 5V tolerance even when GPIO_B10 GPIO_B10 power-off 5V tolerance even when GPIO_B12 GPIO_B12 power-off Digital 1.2V, Power Down@ Core_1.2V Core Power 1.2V Power saving DQS0 DDR_DQS0 DQ_7 DDR_Data7 DQ_6 DDR_Data6 SVCC25 DDR I/O Power 2.5V DQ_5 DDR_Data5...
  • Page 21 Ｍａｉｎ　ＩＣ RTD2674S DQ_15 DDR_Data15 DQ_14 DDR_Data14 DQ_13 DDR_Data13 DQ_12 DDR_Data12 DQ_11 DDR_Data11 DQ_10 DDR_Data10 SVCC25 DDR I/O Power 2.5V DQ_9 DDR_Data9 DQ_8 DDR_Data8 DQS1 DDR_DQS1 Digital 1.2V, Power Down@ Core_1.2V Core Power 1.2V Power saving V33_IO PAD I/O Power 3.3V Connect 10K to GND lsadc_ref LSADC reference...
  • Page 22 Ｍａｉｎ　ＩＣ RTD2674S 5V tolerance even when HDDC0_SDA HDMI DDC Data 0 power-off 5V tolerance even when HDDC0_SCL HDMI DDC Clock 0 power-off 5V tolerance even when HDMI CEC function power-off RX_V12 HDMI GDI Power 1.2V RX_V33 HDMI GDI Power 3.3V HDMI_1_CLKN HDMI_RX_Port1_CLK_Pair_Negative HDMI_1_CLKP...
  • Page 23 Ｍａｉｎ　ＩＣ RTD2674S ADC_VDC_VDD12 ADC Power 1.2V ADC_GND_OFF ADC GND VIN_11P S-Video C/Scart C Input VIN_A0N Common GND for Scart/SV VIN_9P S-Video Y/Scart Y Input VIN_12P S-Video C Input VIN_A1N Common GND for SV VIN_10P S-Video Y Input VIN_13P CVBS Input VIN_A2N Common GND for CVBS VIN_14P...
  • Page 24 TDA7266SA Sound Power Amplifier...

  • Page 25: Wiring Diagram

    Wiring diagram...

  • Page 26: Troubleshooting Guide

    Troubleshooting flow 1. No raster...
  • Page 27 2. No picture, but sound is normal...
  • Page 28 3. No sound, but picture is normal.

  • Page 33: Appendix-B: Exploded View

    APPENDIX-B: Exploded view (LCD-22R35FHD)
  • Page 34 PART LIST OF EXPLODED VIEW REF.No. DESCRIPION Front cabinet assembly Display panel Main frame Main board assembly Power / backlight board assembly Back cover assembly Standing pole assembly Pedestal assembly Interface baffle (down) Power cord clip Interface baffle Key board assembly Speaker assembly IR assembly Light-guided pole...
  • Page 35 PART LIST LCD-22R35FHD ver. REF.No. PARTS No. DESCRIPION Q'TY REMARK XI662242005D Front cabinet assembly Display panel XI5203228203 1 CLAA215FA01 V2 XI574022801D Main frame Main board assembly XI6KC03101B0 Power / backlight board assembly XI6KH0022010 Back cover assembly XI672242N020 Standing pole assembly...
  • Page 36 Appendix: Installing the Stand If the stand is provided, please read these instructions thoroughly before attempting this installation. You must install your TV into the stand in order for it to stand upright on a cabinet or other flat surface. If you intend to mount your TV on a wall or other vertical surface, you must remove the stand column.
  • Page 37 Appendix: Installing the Stand (Continued) 2.Press the two tabs together and push inside properly, and pull out the stand at the same time to detach the stand. Pull out the stand Press together and push inside Tabs Removing the Stand Column To remove the stand column: If wall mounting, please detach the stand column.
  • Page 39 February 2011...

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