Related Manuals for Haier L52A18-A
Summary of Contents for Haier L52A18-A
- Page 1 L52A18...
- Page 2 1. Features 2. Safety Precautions 3. Images of Module and Circuit Boards 4. Trouble Shooting Guide 5.Signal Flowing Chart 6. Bus Control Adjustment 7. Circuit Diagram...
- Page 3 1、 Features Options Functions Display area(mm*mm) Aspect ratio Display pixels TV system Audio system NO.of preset channels Basic OSD language Peak brightness Contrast ratio Viewing angle Response time Number of color Number of gradations AV stereo Multi-sound mode NICAM Audio...
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Page 4: Safety Precautions
Safety Precautions 2、... -
Page 6: Images Of Module And Circuit Boards
I2C connector 2 3 4 Socket explain number Connector from Digital board to ATSC board（no use on L52A18-A） Connector from Digital board to Control panel Digital board software update interface Connector for backlight on/off and Dimming control ， form left to right is：... - Page 7 2) images of Emulation board Socket number Audio input of USB board Socket between Emulation board and output port board Power input of USB board form left to right is： GND、5V、5V Socket explain number GND、 explain Side AV input Socket between Digital board and Emulation board Speaker interface...
- Page 8 output port board Position Number CNA20 CNA9 4) Side AV board Position Number CN21 CN22 CN23 CN24 connect with the Emulation board’s connector CNA2 definition Link to CNA22 on Emulation board Link to CNA8 on Emulation board definition connect with the USB board’s connector JP12 connect with the HUB board’s connector CON6 or CON9 connect with the HUB board’s connector CON6 or...
- Page 9 5、HUB board Position Number HUB signal output，be connected with the USB CON1 HUB signal input，be connected with the Card trough CON8 HUB signal input，be connected with the Card trough CON9 HUB signal input，be connected with the Card trough CON7 HUB signal input，be connected with the Card trough CON6 definition board’s JP11 or JP17...
- Page 10 6) Power supply assembly Power supply assembly 1 Power supply assembly 2...
- Page 11 Position Number （power supply1、 2） （power supply1） （power supply2） （power supply1） （power supply2） 7）VGA board Position Number CN14 CN11 CN12 CN13 definition 220V AC power input On/off control、STB 5V output，be connected with ower supply2 CN4 and main board CN18， On/off control、 12V output， be connected with ower supply1 CN4 and main board CN18 24V output，be connected with the pannel 24V output，be connected with the pannel...
- Page 12 8）USB BOARD Position definition Number USB signal input，be connected with the HUB board’s CON3 CON6 or CON7 or CON8 or CON9 Print signal output，be connected with the CON2 board CON21 USB video output，be connected with the main board USB audio output，be connected with the board CNA1 5V power input，be connected with the CNA5...
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Page 13: Trouble Shooting Guide
4 Trouble Shooting Guide The maintenance diagram only used to board level repair ifyou want to the further maintenance,please connect design department Not opening machine No picture power ON/OFF signal normal Change power Change main board board LCD is not bright Power light Are there 12V... - Page 14 Phenomenon 1 The LCD can not light Possible reasons a. Are the Main Board power ok b. Are the Main Board work c. Are the Backlight 24 V socket inserted good d. Does the output 24V backlight power normal On board back light control plug (CN20) whether inserts. Phenomenon 2: Main board can not work normally Are there short-circuit phenomenon or not good weld on the Main Board mainly look whether the surrounding circuit of the FLI8532 and FLASH(U29) is short-circuit or not good weld...
- Page 15 Examine whether the 5pin UA7 is low. signal Examine whether UA7 is 5V output UA7. Examine whether U1,U2 of HDTV USB Voltage Power Supply is normal. Other Switch on power if 12V is low, The main reason is the power to the main board is a short circuit...
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Page 16: Signal Flowing Chart
5、Signal Flowing Chart HDMI1 24Bit RGB HDMI2 YPbPr/ YCbCr S-Video Tuner Video out Audio out HDMI Audio YPbPr/YCbCr Audio VGA Audio USB Audio AV1 Audio S-Video Audio AV2 Audio LVDS FLI8532 FLI8125 Panel Speaker Bass Head Phone... -
Page 17: Bus Control Adjustment
6. Bus Control Adjustment 1 The method of Enter/Exit Factory model factory model 2 Note factory parameters 1. White balance adjustment / Optional parameters / Software versions Factory_Menu_1 Source Off,AV1,S-Video,YPbPr/YCbCr,VGA Auto Color ColorTemp Cool/Standard/Warm ColorTemp R ColorTemp G ColorTemp B Logo On/Off On/Off... - Page 18 E2PROM preset order finish Exchange houses to restart E2PROM Reset 9 Version number Can not be revised Still/Black Screen On/Off >>> press USB and TV/AV can not switched to When setup is On After the exchange...
- Page 20 HDMI0_5V HDMI1_5V DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 DVDD18 AVDD18 AVDD18 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 AVDD33 DVDD33 DVDD33 DVDD33 DVDD33 DVDD33 DVDD33 DVDD33 HDMIA_VCC ESD-0603-12VA RXA0- RXA0+ AVSS AVSS...
- Page 21 ADCSC_3.3 ADCC_3.3 ADCB_3.3 ADCA_3.3 ADC_3.3 RPLL_33 RPLL_1.8 VDD18_DLL ADC_1.8 ADC_1.8 ADC_1.8 LVDS_3.3 LVDS_3.3 LVDS_3.3 LVDS_3.3 LVDS_PLL_3.3 FSVREF FSVREF FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 FS_2.5 LBACD-33 IO_3.3 IO_3.3 IO_3.3 IO_3.3 IO_3.3 IO_3.3 AB23 IO_3.3 AC22...
- Page 22 VREF VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ R220 R219 R218 R217 R216 R215 R214 VREF VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ VSSQ VDDQ R229 R228 R227 R226 R225 R224 R223 R222 R221...
- Page 23 VREF PGND PVIN...
- Page 24 +3.3V_LVDS_HUD AVDD_LV_33 AVDD_OUT_LV_33 +3.3V_LVDS_OUT_HUD AVDD_OUT_LV_33 AVDD_OUT_LV_33 RVDD_33 +3.3V_I/O_HUD RVDD_33 RVDD_33 RVDD_33 RVDD_33 +3.3VA_ADC_HUD AVDD_A +3.3VB_ADC_HUD AVDD_B AVDD_C +3.3VC_ADC_HUD AVDD_SC +3.3VSC_ADC_HUD AVDD_ADC +3.3V_ADC_HUD VDDA33_LBADC +3.3V_LBADC_HUD AVDD_RPLL_33 +3.3V_RPLL_HUD VDD18_AB VDD18_C +1.8V_ADC_HUD VDD18_SC CVDD_18 CVDD_18 CVDD_18 +1.8V_CORE_HUD CVDD_18 CVDD_18 CVDD_18 CVDD_18 CVDD_18 CVDD_18 VDD_RPLL_18 +1.8V_RPLL_HUD ROM_SCLK...
- Page 26 3.3uF/50V CA29 100K RA18 100R 10uF/16V RA32 CA48 100R 10uF/16V RA31 CA47 DACA_R AHVSS AHVSS RESETQ AGNDC SC4_IN_L SC4_IN_R I2S_DA_IN2 ASG4 DVSS SC3_IN_L DVSS SC3_IN_R DVSS ASG2 DVSUP SC2_IN_L DVSUP SC2_IN_R DVSUP ASG1 ADR_CL SC1_IN_L ADR_WS SC1_IN_R ADR_DA VREFTOP I2S_DA_IN1 I2S_DA_OUT I2S_DA_OUT MONO_IN...
- Page 27 RC_SEL VIDEO AUDIO (TV) AF/OP +5V,IF CVBS ADD_SEL NC(TU) NC(AGC) VCC2 GND2 VCC1 GND1 100uF/10V CA112...