hit counter script
Download
Share
Print this page
Sanyo LCE-24R45FHD Service Manual
  1. Manuals
  2. Brands
  3. Sanyo Manuals
  4. LCD TV
  5. LCE-24R45FHD
  6. Service manual

Sanyo LCE-24R45FHD Service Manual

Led-lcd tv
Hide thumbs

Advertisement

Quick Links

Download this manual
LCE-24R45FHD
50 82
-BG
LED-LCD TV
171

Advertisement

loading

Related Manuals for Sanyo LCE-24R45FHD

Summary of Contents for Sanyo LCE-24R45FHD

  • Page 1 LCE-24R45FHD 50 82 LED-LCD TV...

  • Page 2: Table Of Contents

    CONTENTS Safety precautions………………………………………………………………………..… Alignment instructions …………………………….…….………………………………… Instruction of software upgrading & boot burning ............ Working principle analysis of the unit……………………………….………….…………. Block diagram…………………………………..………………………………….………… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………………………. Troubleshooting guide ………………………………………………………………..…… Schematic diagram………………………………………………………………………… APPENDIX-A: 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 3.1.1 Main board of non BBY model of which dimension is 26”...
  • Page 6 3.1.4 Main board of BBY model of which dimension is 24”. According to wiring diagram ‘9224KC7001JL’, connect main board, power board, IR board and key board correctly, switch on power supply, then press key ‘power’ to turn on the TV set. a）Test voltage of socket X301 each pin in turn, please refer to voltage value as Table 5.
  • Page 7 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 8 4 Adjustment instruction 4.1 Unit adjustment 4.1.1 According to wiring diagram ‘9242KC4201JL’ , ‘9222KC4201JL’, ‘9219KC7201JL’ , ‘9224KC7001J’ , "9224KC6801JL" 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 9 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 10 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 11 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 12 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 13 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 14 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 15 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 16: 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 18: Ic Block Diagram

    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 19 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 20 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 21 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 22 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 23 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 24 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 25 TAS5711 PIN ASSIGNMENT PHP Package (Top View) 48 47 46 45 44 43 42 41 40 39 38 37 OUT_A OUT_D PVDD_A PVDD_D PVDD_A PVDD_D BST_A BST_D GVDD_OUT GVDD_OUT VREG SSTIMER TAS5711 OC_ADJ AGND PBTL AVSS DVSS PLL_FLTM DVDD PLL_FLTP STEST VR_ANA RESET...
  • Page 26 PIN FUNCTIONS (continued) TYPE TERMINATION DESCRIPTION TOLERANT NAME DVSS Digital ground Analog ground for power stage GVDD_OUT 5, 32 Gate drive internal regulator output. This pin must not be used to drive external devices. LRCLK Pulldown Input serial audio data left/right clock (sample rate clock) MCLK Pulldown Master clock input...

  • Page 27: Wiring Diagram

    Wiring diagram...
  • Page 28 Troubleshooting flow 1. No raster...
  • Page 29 2. No picture, but sound is normal...
  • Page 30 3. No sound, but picture is normal.
  • Page 37 PAD1 RESERVE POWER PAD2 GND/THD INPUT PAD3 CIN1 GPIO5 MENU 3.6K PAD8 CIN2 GPIO6 CIN3 GPIIO7 LED1 D[0] PAD4 5.6K CIN4 INT# CIN5 VOL- PAD5 LED2 D[1] CIN6 SCLK PAD6 CIN7 ADD0 LED3 D[2] CIN8 ADD1 CIN9 GPIO8 5.6K LED4 D[3] CIN10 GPIO9...
  • Page 38 APPENDIX-A: Main assembly 9224KC6813 LCE-24R45FHD MAIN COMPONENT AND IT'S NO. NAME 5270160001 EM6AA160TS-4G Main board XI6KC0470110 N103 5272674001 RTD2674S N101 5273206001 MX25L3206E N104 5275711001 TAS5711 N501 Power board XI6KM0082010 Remote control XI6010J03505 RC-J35-0A Touching key board XI635KC03201 IR board XI635KC03200...
  • Page 39 APPENDIX-B: Exploded view (LCE-24R45FHD)
  • Page 40 PART LIST OF EXPLODED VIEW REF.No. DESCRIPION Front cabinet assembly Display panel Main board connective bar (up) Main board assembly Power board assembly Back cover assembly Pedestal assembly Standing pole Interface baffle (down) Interface baffle (side) Main board connective bar (down) Key bracket Power cord bracket Touching key assembly...
  • Page 41 PART LIST LCE-24R45FHD ver. REF.No. PARTS No. DESCRIPION Q'TY REMARK XI6624680020 Front cabinet assembly XI5203248504 Display panel 1 LB_V236H1-LE4 XI58A009270A Main board connective bar (up) Main board assembly XI6KC0470110 Power board assembly XI6KM0082010 XI672475H030 Back cover assembly XI6150109000 Pedestal assembly...
  • Page 44 February 2011...