LG 42LE5500 Page 69 Service Manual Download

Page: 69 / 99

No audio
Screen normal

Check user
menu >
Speaker off

Off

Cancel OFF

Check audio B+
20V or 24V of
Power Board

Normal
voltage

Replace Power Board and repair parts

Check
Speaker
disconnection

Replace Speaker

Replace MAIN Board

End

C. Audio error

No audio/ Normal video

☞

A24

☞

A25

Disconnection

Established

date

Revised date

8/13

LCD TV

Error

symptom

Standard Repair Process

2010. 2 .19

LGE Internal Use Only

Summary of Contents for 42LE5500

Page 1: ...E CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LT03E MODEL 42LE5500 42LE5500 DA North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only Printed in Korea P NO MFL63283601 1003 REV00 ...

Page 2: ... 2 LGE Internal Use Only Copyright LG Electronics Inc All right reserved Only for training and service purposes CONTENTS CONTENTS 2 SPECIFICATION 3 ADJUSTMENT INSTRUCTION 7 EXPLODED VIEW 17 SVC SHEET ...

Page 3: ...ck Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to t...

Page 4: ... by part number in accordance with BOM 5 The receiver must be operated for about 20 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC No Item Specification Remark 1 Display Screen Device 105 cm 42 inch wide color display module 2 Aspect Ratio 16 9 3 LCD Module 105 cm 42 inch TFT WUXGA LCD 4 ...

Page 5: ...080I 13 1920 1080 56 25 50 148 5 HDTV 1080P 14 14 1920 1080 67 432 59 94 148 350 HDTV 1080P 15 1920 1080 67 5 60 00 148 5 HDTV 1080P No Item Specification Min Typ Max Remark 1 Viewing Angle CR 10 Right Left Up Down 89 89 89 89 LC420EUH SCA1 2 2 Luminance Luminance cd m2 360 450 LC420EUH SCA1 2 Variation 1 3 MAX MIN 3 Contrast Ratio CR 1000 1400 4 CIE Color Coordinates White Wx 0 279 All white All ...

Page 6: ...oposed Remark 1 720 480 15 73 59 94 13 500 SDTV DVD 480I 525I Spec out but display 2 720 480 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720 576 15 625 50 00 13 500 SDTV DVD 576I 625I 50Hz 4 720 480 31 47 59 94 27 SDTV 480P 5 720 480 31 5 60 00 27 027 SDTV 480P 6 720 576 31 25 50 00 27 SDTV 576P 7 1280 720 44 96 59 94 74 176 HDTV 720P 8 1280 720 45 60 00 74 25 HDTV 720P 9 1280 720 37 5 50 00 74 25 HDT...

Page 7: ... 1 Mac Address D L LAN Test 2 Main S W program download Using USB Memory stick 3 Input Tool Option 4 Download EDID EDID data are automatically downloaded when adjusting the Tool Option 5 ADC Calibration RGB Component 6 Check SW Version 3 2 SET assembly adjustment items 1 Input Area option 2 Adjustment of White Balance Auto 3 Adjustment of White Balance Manual 4 Intelligent Sensor Inspection Guide ...

Page 8: ...W Version and Tool Option 4 3 Input tool option Adjust tool option refer to the BOM A Tool Option Input PCBA Check Process A Area Option Input Set Assembly Process Tool Option table MODEL 55LE5500 47LE5500 42LE5500 32LE5500 Tool Option1 45312 33024 24832 16640 Tool Option2 32279 32279 32279 32279 Tool Option3 64556 64556 64556 64556 Tool Option4 25004 25004 25004 24876 Tool Option5 1851 1851 1851 ...

Page 9: ...6 21 50 B0 E0 51 00 1B 30 40 70 36 00 A0 5A 00 00 00 1E 00 00 F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 C9 Analog RGB 128bytes 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 01 14 01 03 68 10 09 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 81 80 61 40 45 40 31 40 01 01 30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 45 00 A0 5A 00 00 00 1E 01 1D...

Page 10: ...8 2C 45 00 A0 5A 00 00 00 1E 66 21 50 B0 E0 51 00 1B 30 40 70 36 00 A0 5A 00 00 00 1E 00 00 F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 D9 HDMI 2 256Bytes 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 01 14 01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 71 4F 81 80 01 01 01 01 01 01 30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 45 ...

Page 11: ...key 2 Zero calibrate probe then place it on the center of the Display 3 Connect Cable RS 232C 4 Select mode in adj Program and begin adj 5 When adj is complete OK Sing check adj status pre mode Warm Medium Cool 6 Remove probe and RS 232C cable to complete adj W B Adj must begin as start command wb 00 00 and finish as end command wb 00 ff and Adj offset if need Luminance min value is 150cd in the C...

Page 12: ... three modes all Cool Medium Warm Fix the one of R G B gain and change the others 11 When adjustment is completed Enter COPY ALL 12 Exit adjustment mode using EXIT key on R C 1 CASE First adjust the coordinate far away from the target value x y 1 x y target i Decrease the R G 2 x y target i First decrease the B gain ii Decrease the one of the others 3 x target y target i First decrease B so make y...

Page 13: ...C 45 663 25 13265 29 PAL G V UHF E25 C 25 503 25 10065 30 SECAM D V UHF R7 C 07 183 25 3665 31 MA WR SECAM D V UHF R7 C 07 189 25 32 33 34 NTSC M V UHF US 4 C 04 67 25 1345 35 NTSC M V UHF J 01 C 01 91 25 1825 36 NTSC M V UHF US 13 J 11 C 13 211 25 4225 37 NTSC M V UHF US 14 J 13 C 14 471 25 9425 38 NTSC M V UHF US 63 J62 C 63 765 25 15305 39 NTSC M Cable CATV 15 S 15 127 25 2545 40 NTSC M V UHF U...

Page 14: ...eck battery before test Recommend Change battery for every Lot 5 9 2 Process 1 Push Mute or START key for pairing between TV set and motion remote controller 2 Push OK or Enter key you can see the Cursor on screen 3 Push Vol or STOP key Disconnect Pairing 5 10 3D Function test 5 10 1 Equipment Pattern Generator MSPG 3233 HDMI mode 37 pattern No 81 5 9 2 Process 1 Connect HDMI HDMI mode 371 Pattern...

Page 15: ...uetooth software MCL389x bin file to memory stick with out folder Caution Do no t copy the file to the inside folder 2 Connection Plug in USB Memory stick to the USB input of the set 3 USB input Automatically loading menu The OSD USB Device loading is appealed by automatically 4 Selecting Window for Bluetooth Software update The Pop up window appears for selecting to update Bluetooth software and ...

Page 16: ...nds Please Wait until finish and do not un plug power cable 6 OSD Bluetooth software updated successfully OSD Information Bluetooth software update success LCDTV Set will restart by automatically Time Process to restart about 5seconds 7 Check S W Version Push IN START button on service remote Controller Check Information Bluetooth S W version will appear on OSD Service Menu Example Bluetooth SW ve...

Page 17: ...rical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufacture...

Page 18: ...DD M_REMOTE_RX M_REMOTE_RX M_REMOTE_TX M_REMOTE_TX R103 0 RF_SWITCH_CTL_CHB RF_SWITCH_CTL_CHB R113 22 DEMOD_RESET LG5111_RESET 12V C178 0 1uF 50V C179 0 1uF 50V R1041 12K C173 22uF 16V C180 100pF 50V EMI R105 56 R115 1 8K R1052 4 7K 3 3V_NORMAL MODEL_OPT_6 CI_SEL MODEL_OPT_6 R118 1K OLED R119 1K NON_OLED MDS62110204 GAS6 1 5 5T_GAS MDS62110204 GAS7 1 5 5T_GAS MDS62110204 GAS1 1 5 5T_GAS MDS6211020...

Page 19: ...ATA B25 RMX0_SYNC A26 POD2CHIP_MCLKI G23 POD2CHIP_MDI0 D25 POD2CHIP_MDI1 D24 POD2CHIP_MDI2 C25 POD2CHIP_MDI3 E27 POD2CHIP_MDI4 E26 POD2CHIP_MDI5 D28 POD2CHIP_MDI6 D27 POD2CHIP_MDI7 D26 POD2CHIP_MISTRT E23 POD2CHIP_MIVAL E24 CHIP2POD_MCLKO F25 CHIP2POD_MDO0 C27 CHIP2POD_MDO1 C26 CHIP2POD_MDO2 B28 CHIP2POD_MDO3 B27 CHIP2POD_MDO4 A27 CHIP2POD_MDO5 F24 CHIP2POD_MDO6 F23 CHIP2POD_MDO7 E25 CHIP2POD_MOST...

Page 20: ...2 AG11 SD_CVBS3 AG12 SD_CVBS4 AF13 SD_INCM_CVBS1 AC9 SD_INCM_CVBS2 AF10 SD_INCM_CVBS3 AH12 SD_INCM_CVBS4 AG13 SD_SIF1 AF17 SD_INCM_SIF1 AG17 SD_FB AD15 SD_FS AE16 SD_FS2 AE17 PLL_VAFE_AVDD1P2 AB16 PLL_VAFE_AVSS AA15 PLL_VAFE_TESTOUT AC16 RGB_HSYNC AG3 RGB_VSYNC AF4 I2S_CLK_IN AE18 I2S_CLK_OUT AF18 I2S_DATA_IN AD17 I2S_DATA_OUT AH19 I2S_LR_IN AD18 I2S_LR_OUT AG18 AUD_LEFT0_N AG26 AUD_LEFT0_P AH26 A...

Page 21: ...100 1 DDR0_DQS0b 004 A4 DDR_VTT C483 0 1uF C457 470pF DDR01_RASb DDR1_CLKb R412 240 1 C444 470pF C494 0 1uF DDR1_DM0 004 H6 DDR01_CASb A1 2V DDR0_CLK 004 C7 004 C4 AR405 75 C472 0 1uF DDR1_DM1 004 A4 AR400 75 DDR1_DQS0b 004 H6 AR402 75 DDR1_DM0 004 A4 DDR0_A 4 6 DDR1_A 4 6 DDR1_DQ 8 15 004 B5 DDR0_DQS0b 004 E6 R411 0 OPT DDR01_ODT DDR1_VREF0 DDR01_BA2 DDR0_DQS1 004 A4 C473 10uF C476 10uF C454 10uF...

Page 22: ...102 1uF 25V AV_CVBS_DET 9 G3 C1109 27pF 50V R1102 470K R1109 470K SC1_B R1106 0 D1115 5 6V 3 5V_ST C1119 27pF 50V C1121 27pF 50V COMP2_Y C1106 27pF 50V L1104 270nH COMP2_L_IN L1105 270nH L1101 270nH Q1103 MMBT3904 F OPT E B C HP_DET C1107 27pF 50V 3 3V_NORMAL Q1101 MMBT3904 F OPT E B C C1127 100pF D1106 5 5V COMP2_Pr R1122 1K OPT C1131 1000pF 50V OPT C1108 27pF 50V R1123 1K R1104 1K L1100 270nH RE...

Page 23: ...3 3V 13 B2 1 2V 5 AS 12 GND 11 VIDEO 2 BST_CNTL 10 NC 4 NC RF_AGC 1 ANT_PWR OPT 17 DIF_1 N 9 SIF 8 NC IF_TP 3 B 5V 16 IF_AGC_CNTL 7 SDA 6 SCL 15 RESET 18 DIF_2 P 19 SHIELD TU2600 3 TDTJ S031D AU_Asia_Tuner_V 14 3 3V 13 1 2V 5 AS 12 GND 11 VIDEO 2 BST_CNTL 10 NC 4 NC RF_AGC 1 ANT_PWR OPT 17 DIF_1 9 SIF 8 NC IF_TP 3 B 16 IF_AGC_CNTL 7 SDA 6 SCL 15 RESET 18 DIF_2 19 SHIELD TU2600 4 TDTJ S001D AU_Asia...

Page 24: ...OD 1 2V_DE SCL1_3 3V R2810 22 ISDB_DEMOD R2808 22 ISDB_DEMOD C2804 0 1uF ISDB_DEMOD C2813 0 1uF 16V ISDB_DEMOD R2803 10K ISDB_DEMOD C2811 0 1uF 16V ISDB_DEMOD C2801 0 1uF ISDB_DEMOD C2815 0 1uF 16V ISDB_DEMOD C2822 0 1uF 16V ISDB_DEMOD R2807 22 ISDB_DEMOD R2811 2 2K OPT C2808 0 1uF ISDB_DEMOD R2813 22 R2814 22 IC2800 MN884433 ISDB_DEMOD 1 VSS_1 2 AVDD_S 3 AII_S 4 AIQ_S 5 AVSS_S 6 VRT_S 7 VRB_S 8 T...

Page 25: ...ISDB_POWER C2904 0 1uF 16V ISDB_POWER IC2900 SC4215ISTRT ISDB_POWER 3 VIN 2 EN 4 NC_2 1 NC_1 5 NC_3 6 VO 7 ADJ 8 GND 3 3V_DE IF_AGC L2900 BLM18PG121SN1D ISDB_POWER C2902 0 1uF 16V ISDB_POWER R2900 0 ISDB_DEMOD R2902 10K ISDB_POWER R2901 0 INT_DEMOD IF_AGC_ISDB 3 3V_DE C2903 10uF 10V ISDB_POWER R2903 5 1K ISDB_POWER TP2901 C2900 0 1uF ISDB_POWER IF_AGC_SEL TU_IF_AGC_BCM C2901 0 1uF ISDB_POWER 3 3V_...

Page 26: ...2203 5 6V CDS3C05HDMI1 C2213 0 1uF USB_CTL2 D2201 5 6V CDS3C05HDMI1 R2211 100K OPT USB_DP1 USB_DM2 USB_CTL1 R2201 12K 1 10W 1 IC2201 USB2512A_AEZG 1 USBDN1_DM 3 USBDN2_DM 7 NC_2 9 NC_4 10 VDDA33_2 11 TEST 12 PRTPWR1 13 OCS1_N 14 VDD18 15 VDD33CR 16 PRTPWR2 17 OCS2_N 18 NC_5 19 NC_6 20 NC_7 21 NC_8 22 SDA SMBDATA NON_REM1 23 VDD33 24 SCL SMBCLK CFG_SEL0 25 HS_IND CFG_SEL1 26 RESET_N 27 VBUS_DET 28 ...

Page 27: ...BCM BT MODULE 1 2 3 4 5 6 7 8 9 10 11 3 3V_NORMAL R1896 27 BCM BT MODULE R1897 27 BCM BT MODULE R1898 0 BCM BT MODULE VREG_CTRL BT_RESET R1899 0 BCM BT MODULE BT_DP BT_DM D1898 5 6V CDS3C05HDMI1 BCM BT MODULE D1899 5 6V CDS3C05HDMI1 BCM BT MODULE R1889 10 BCM BT MODULE Q1801 RTR030P02 BCM BT MODULE S D G Q1800 2SC3052 BCM BT MODULE E B C BT_ON OFF R1887 47K BCM BT MODULER1886 47K BCM BT MODULE R18...

Page 28: ...9 CI_A 10 CI_A 11 CI_A 12 CI_A 13 CI_OUTDATA 4 CI_OUTDATA 5 CI_OUTDATA 6 CI_OUTDATA 7 CI_OUTCLK CI_OUTVALID CI_OUTSTART CI_OUTDATA 0 CI_OUTDATA 1 CI_OUTDATA 2 CI_OUTDATA 3 CI_OUTCLK CI_WAIT CI_MOD_RESET GP49 CI_CD2 GP38 CI_MOD_RESET CI_CD1 FE_TS_DATA_CLK FE_TS_VAL_ERR CI_WAIT CI_IREQ GP39 007 H5 016 AJ3 CI_CD1 CI_OUTCLK CI_OUTDATA 0 7 CI_OUTSTART CI_OUTVALID FE_TS_SYNC CI_CD2 EBI_RW 007 E6 CI_5V_C...

Page 29: ...6 GND 27 RV0 28 RV0 29 RV1 30 RV1 31 RV2 32 RV2 33 RVCLK 34 RVCLK 35 RV3 36 RV3 37 RV4 38 RV4 39 RV5 40 RV5 41 GND 42 SOE 43 POL 44 VST_IN 45 H_CONV 46 OPT_N 47 GND 48 GMA18 49 GMA16 50 GMA15 51 GMA13 52 GMA12 53 GMA10 54 GMA9 55 GMA7 56 GMA6 57 GMA4 58 GMA3 59 GMA1 60 GND 61 VDD_EVEN GMA3 RRXB2 RRXA3 RRXA4 RLV3N VGL_I CLK2 R7503 0 NON_GIP RRXA0 LLCLKP CLK2 VGI_P R7509 0 NON_GIP GMA16 LLV1P GMA4 R...

Page 30: ...5 6 7 8 9 10 11 M3_MOSI C7913 100pF 50V OPT M0_MOSI C7902 100pF 50V OPT C7904 100pF 50V OPT C7909 100pF 50V OPT M3_SCLK C7912 100pF 50V OPT M0_SCLK C7908 100pF 50V OPT L_VS M2_MOSI C7911 100pF 50V OPT C7903 100pF 50V OPT C7910 100pF 50V OPT C7907 100pF 50V OPT R_VS R7908 3 3K Edge C7901 100pF 50V OPT S_MOSI S_SCLK C7906 100pF 50V OPT R7909 3 3K Edge M2_MOSI M1_SCLK R7916 22 Edge 55 R7900 22 OPT R7...

Page 31: ...IC21J501NE R8058 20K R8026 1K R8045 0 NON_ESD C8029 22uF 16V L8006 MLB 201209 0120P N2 L8011 BLM18PG121SN1D R8047 3 9K OPT C8045 0 1uF 16V A1 2V D1 2V R8040 100K C8027 0 1uF 3 5V_ST R8043 470K 1 C8036 0 1uF C8032 0 1uF L8009 2uH R8048 910K 1 C8026 0 1uF 10 R8041 R8042 0 C8035 22uF D1 8V L8012 3 6uH NR8040T3R6N R8052 10K 0 1uF C8050 R8051 6 8K C8042 0 01uF 25V 3 5V_ST C8038 0 01uF 25V C8031 22uF 10...

Page 32: ... RESET 41 P124 XT2 EXCLKS 42 P123 XT1 43 FLMD0 44 P122 X2 EXCLK OCD0B 45 P121 X1 OCD0A 46 REGC 47 VSS 48 VDD R8106 10K R8185 20K 1 16W 1 C8104 0 1uF R8184 47K 3 5V_ST NEC_ISP_Tx NEC_RXD R8128 22 NEC_EEPROM_SCL SCART1_MUTE R8133 22 R8110 10K LCD OLED R8104 10K NEC_TXD R8181 10K OPT R8145 22 R8186 20K 1 16W 1 MODEL1_OPT_1 R8190 22 R8123 10K OLED 3D AMP_MUTE R8189 10K POWER_ON OFF2_1 R8108 10K R8183 ...

Page 33: ...01 2SC3052 E B C R8200 22 Q8203 2SC3052 WIRELESS E B C R8205 47K R8220 47K COMMERCIAL R8202 47K C8211 1000pF 50V R8203 10K D8206 5 6V AMOTECH R8276 1 5K KEY1 3 5V_ST R8211 10K 1 3 3V_NORMAL Q8200 2SC3052 E B C L8202 BLM18PG121SN1D NEC_EEPROM_SCL NEC_EEPROM_SDA D8209 5 6V JK8200 XRJV 01V D12 180 1 2 3 4 5 6 7 8 D1 D2 D3 D4 9 L8204 CIC21J501NE D8212 5 6V D8211 5 6V D8207 5 6V EPHY_TDN D8208 5 6V EPH...

Page 34: ...3 R8302 1K R8303 0 HDMI_3 5V_HDMI_4 D0 _HDMI1 5V_HDMI_2 D1 _HDMI3 R8311 4 7K R8327 0 D0 _HDMI1 HDMI_RX0 CK _HDMI2 DDC_SDA_2 D8301 5 5V OPT CEC_REMOTE DDC_SDA_2 CK _HDMI1 D8307 A1 C A2 5V_NORMAL CK _HDMI2 D0 _HDMI3 C8304 0 1uF 16V R8322 47K HDMI_3 CEC_REMOTE CEC_REMOTE C8313 0 1uF 16V D8312 MMBD301LT1G R8337 0 GND R8307 0 HDMI_HPD_1 GND DDC_SCL_4 D8304 5 5V OPT HDMI_HPD_2 GND SDA2_3 3V DDC_SDA_3 5V...

Page 35: ...D_GND 7 GREEN_GND 8 BLUE_GND 9 NC 10 SYNC_GND 11 GND_2 12 DDC_DATA 13 H_SYNC 14 V_SYNC 15 DDC_CLOCK 16 SHILED R8401 22 DSUB_B PC_L_IN 5V_NORMAL R8414 2 7K R8411 470K R8419 0 DSUB_G R8402 22 DSUB_DET R8413 2 7K R8423 0 OPT R8425 1K R8424 10K R8421 0 R8417 0 C8402 22pF 50V OPT C8403 22pF 50V OPT R8405 22 R8406 22 C8401 0 1uF C8404 0 1uF 16V C8405 18pF 50V C8406 18pF 50V R8416 22 R8415 22 R8422 100 R...

Page 36: ...7pF 50V 0 R8603 D8601 5 6V R8605 10K 3 3V_NORMAL C8600 100pF 50V R8608 1K C8611 100pF 50V R8601 470K D8602 5 6V R8606 0 C8607 1uF 25V R8607 0 R8602 470K C8606 1uF 25V D8603 5 6V C8612 100pF 50V C8608 27pF 50V C8601 27pF 50V L8600 270nH R8604 1K 3 3V_NORMAL C8604 100pF 50V D8606 5 6V R8600 10K D8607 5 5V D8605 5 5V SIDE_COMP_INCM C8613 0 1uF R8609 36 JK8601 KJA PH 1 0177 3 M3_DETECT 4 M4 5 M5_GND 1...

Page 37: ...D TP8700 24V R8700 0 WIRELESS C8701 2 2uF R8711 4 7K OPT C8703 0 1uF R8713 1K IC8700 MC14053BDR2G WIRELESS 3 Z1 2 Y0 4 Z 1 Y1 6 INH 5 Z0 7 VEE 8 VSS 9 C 10 B 11 A 12 X0 13 X1 14 X 15 Y 16 VDD R8704 22K R8712 47K OPT R8706 0 NON_WIRELESS R8708 0 WIRELESS C8700 0 1uF 50V WIRELESS_TX WIRELESS_SCL R8714 10K TP8701 R8707 0 WIRELESS WIRELESS_DL_RX 3 3V_NORMAL 3 5V_ST IR_PASS R8701 0 WIRELESS WIRELESS_DE...

Page 38: ... C8838 390pF 50V R8823 4 7K L8800 BLM18PG121SN1D R8805 100 D8803 100V 1N4148W OPT C8815 10uF 10V OPT 0 1uF C8843 50V 0 1uF C8844 50V 3 3V_NORMAL R8808 100 R8801 100 POWER_DET R8813 12 R8816 12 C8801 10uF 10V OPT 0 1uF C8833 50V R8817 12 C8835 390pF 50V R8807 0 OPT 0 1uF C8841 50V R8824 0 R8802 100 SDA1_3 3V R8804 100 C8804 0 1uF 16V D8800 100V 1N4148W OPT R8810 10K C8821 1000pF 50V C8828 1uF 25V C...

Page 39: ..._A 8 C8903 1000pF OPT FRC_MCLK DDR3_CKE DDR3_RESETB FRC_A 9 DDR3_CASB R8900 1K 1 C8914 0 1uF D1 5V_DDR3 FRC_DMU DDR3_BA2 FRC_A 3 C8904 0 1uF 16V 1 5V_MEMC R8923 10K FRC_A 1 DDR3_DQSUB FRC_A 7 C8920 0 1uF C8926 0 1uF DDR3_CKE DDR3_BA1 C8923 0 1uF FRC_DQL 0 DDR3_RASB 1 5V_MEMC 3 3V_MEMC C8934 10uF 25V C8937 2200pF 3 3V_MEMC 12V R8928 10K C8944 0 1uF 16V R8935 10K 1 C8942 22uF 10V C8940 100pF 50V OPT...

Page 40: ...L C9163 0 1uF 16V TMS R9185 22 TDI R9190 10K R9188 10K P9101 12505WS 09A00 1 2 3 4 5 6 7 8 9 10 P9301 12505WS 04A00 1 3 3V 2 GND 3 RX 4 TX 5 R9361 22 R9363 22 R9360 22 R9365 22 R9359 22 R9364 22 R9362 22 R9376 22 R9350 22 R9351 22 R9342 22 R9343 22 R9344 22 R9345 22 R9346 22 R9347 22 R9348 22 R9349 22 C9300 0 1uF 16V OPT C9363 0 1uF 16V C9301 4 7uF 10V OPT LG5111 IC9301 R1A1P A3 R1A1M A2 R1B1P A4 ...

Page 41: ...2 DDR2_A8 T6 DDR3_BA0 DDR2_BA2 G3 DDR3_BA1 DDR2_ODT U4 DDR3_BA2 DDR2_A12 E1 DDR3_MCLK DDR2_MCLK U1 DDR3_MCLKZ DDR2_MCLKZ U2 DDR3_CKE DDR2_RASZ T4 DDR3_ODT DDR2_BA1 H2 DDR3_RASZ DDR2_WEZ J1 DDR3_CASZ DDR2_CKE H3 DDR3_WEZ DDR2_BA0 H1 DDR3_RESET DDR2_A3 F2 DDR2_DQS0 DDR3_DQS0 M3 DDR2_DQS1 DDR3_DQS1 N2 DDR2_DQSB0 DDR3_DQSB0 N1 DDR2_DQSB1 DDR3_DQSB1 N3 DDR2_DQ7 DDR3_DQM0 R2 DDR2_DQ11 DDR3_DQM1 K3 DDR2_...

Page 42: ...F 50V C9132 15pF 50V OPT C9153 100uF 25V R9173 1K R9130 220K 1 TCON_42_FHD GMA6 C9111 1uF 50V R9168 1 33K NON_GIP R9159 0 GIP R9120 7 5K R9117 47K OPT VDD_LCM 16V CLK1 GMA7 GCLK6_I FLK C9115 10uF 16V C9107 1uF 50V GIP CLK6 GCLK3_I R9133 10 GIP C9158 15pF 50V OPT R9157 75K 1 TCON_42_FHD VCOM_FB0 R9105 22 GIP R9125 18K R9133 1 200 NON_GIP R9134 10 GIP C9160 15pF 50V CLK4 L9103 BLM18PG121SN1D TH9000 ...

Page 43: ...1K 1 TCON_37_FHD R9166 3 20K 1 TCON_47_FHD R9156 2 910K 1 TCON_37_FHD R9144 4 27K 1 TCON_55_FHD R9157 1 27K 1 TCON_32_FHD R9130 4 68K 1 TCON_55_FHD R9126 1 510K 1 TCON_32_FHD R9166 1 24K 1 TCON_32_FHD R9126 3 510K 1 TCON_47_FHD R9130 2 220K 1 TCON_37_FHD R9166 4 15K 1 TCON_55_FHD R9130 3 220K 1 TCON_47_FHD R9156 4 150K 1 TCON_55_FHD R9131 4 27K 1 TCON_55_FHD R9129 1 22K 1 TCON_32_FHD R9129 2 47K 1...

Page 44: ......

Page 45: ...LCD TV Repair Guide 10 years New Models Applicable Model xxLE5500 xxLE7500 xxLE8500 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ...Contents LE5300 LE5300 400Hz LE5500 LE5500 LE7500 LE7500 LE8500 LE8500 LE9500 LE9500 200Hz 100Hz FHD LED Edge Full LED Slim IOP Local Dimming without 32 37 Slim Bezel Depth Borderless Light Borderless USB DivX HD MP3 Jpeg play Bluetooth Wireless Ready DLNA THX Channel Browser LED LCD TV Key Features Broadband TV Features Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and ...

Page 48: ... Black color Not only Direct LED s Picture quality but Edge LED s thin thickness 2 types of LED IOP Benefit More Clear More Real Model LE8500 Local Dimming inch 42 47 55 Local Dimming Block quantity 8 row 24 3 ass y 8 192EA 9 row 24 216EA 10 row 24 240EA inch 42 47 55 LED package quantity 192 4 packages block 768EA LED Package 216 4 packages block 864EA 240 5 packages block 1200EA Copyright ⓒ 2010...

Page 49: ...e LED Edge Type w Local Dimming Upper Metal Cover LED Array LED Packages 47 264 42 228 LED Array is on the Top Bottom of Module Local dimming depicts more deep black Feature 2 types of LED Edge Model LE7500 LE5500 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...imming Processor LCD Timing Controller one Chip 4 Gamma Vcom Voltage generater For LCD Module 5 Micom for Key IR sensing 6 HDMI switch 4 1 7 Audio AMP 10W 10W 32 LE5500 7500 no Local dimming 42 47 55 LE5500 7500 42 47LE8500 with Local dimming 3 LG5111 is not applied Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ... TU_CVBS TU_SIF SCL1 SDA1 CONTROL IR KEY P8200 NEC_EEPROM _SCL SDA LED_R BUZZ KEY1 KEY2 IR LED_B LG LOGO SIDE_USB _DP DM HDMI 1 TDA19997 4x1 HDMI Switch IC8300 HDMI 2 HDMI 3 HDMI 4 HDMI0_ SCL SDA TMDS 0 2 CLK HDMI1_ SCL SDA TMDS 0 2 CLK HDMI2_ SCL SDA TMDS 0 2 CLK HDMI3_ SCL SDA TMDS 0 2 CLK FE_TS_SERIAL SYNC VAL_ERR DATA_CLK ATV DTV TUNER HNIM TU2600 Cable IF_N P AV1 COMP1 COMP2 CVBS L R YPbPr L ...

Page 52: ...I LVDS MAX9668ETP IC601 GMA 8 bit LEVEL SHIFT MAX17119ETI IC602 MINI_LVDS_POWER MAX17113 IC603 DPM_A EN2 MINI_LVDS_POWER TPS62110 IC600 HVDD VDD_LCM VCC_LCM SPDIF_OUT HP_L ROUT I2S P8800 4pin MST7378P URSA3 IC9001 LVDS_TX_E O 0 4 I2C_SCL SDA DDR3 Address 0 12 DDR3 Data 0 15 LVDS_E O_CLK Serial Flash W25X40VSSIG IC9000 FRC_SPI SCL1 SDA1 DDR2 SDRAM MT47H128M8HQ 1GBit IC400 401 DDR0 Data 0 15 DDR2 SD...

Page 53: ...ni LVDS P7400 1 LGE7378A URSA3 IC9001 LVDS_TX_E O 0 4 SCL1 SDA1 DDR3 Address 0 12 DDR3 Data 0 15 LVDS_E O_CLK Serial Flash W25L4005CM2I IC9000 FRC_SPI DDR2 SDRAM MT47H128M8HQ 1GBit IC400 401 DDR0 Data 0 15 DDR2 SDRAM MT47H128M8HQ 1GBit IC402 403 DDR0 Address 0 13 DDR1 Data 0 15 DDR1 Address 0 13 BCM High Block Diagram Memory MICOM UPD78F0513AGA GAM AX IC8101 SCL1 SDA1 MICOM EEPROM M24C16 WMN6T 16K...

Page 54: ...SDB_DEMOD MN884433 IC3701 0xd8 MICOM NEC IC1002 MICOM NEC IC1002 Audio Amp NTP7000 IC501 Audio Amp NTP7000 IC501 USB2 USB2512 IC2201 FRC URSA3 MST7378 IC1300 FRC URSA3 MST7378 IC1300 CH1 CH1 CH2 CH2 CH3 CH3 NVRAM M24M01 IC102 NVRAM M24M01 IC102 Brazil Only Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ...0xc0 ISDB_DEMOD MN884433 IC3701 0xd8 MICOM NEC IC1002 MICOM NEC IC1002 Audio Amp NTP7000 IC501 Audio Amp NTP7000 IC501 USB2 USB2512 IC2201 FRC URSA3 MST7378 IC1300 FRC URSA3 MST7378 IC1300 CH1 CH1 CH2 CH2 CH3 CH3 NVRAM M24M01 IC102 NVRAM M24M01 IC102 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ...100Hz 100Hz Backlight Interface Signals 120Hz To LED driver 100Hz Main SoC Main SoC 50Hz All in one main PCB for LE55 LE75 edge LE85 IOP LED Backlight LE85 series have TM240Hz function in LED Driver board of module Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ... IR Sensor PCB LED driver 1 2 3 4 5 6 Main PSU cable Main Module LVDS cable LED driver Module cable BT shield cable SPK cable LOGO Touch IR cable PCBs Cables 32 42 47 55LE7500 32 42 47 55LE5500 LCD Module Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ... 4 5 6 Main PSU cable Main Module LVDS cable LED driver PSU cable BT shield cable not in picture SPK cable LOGO Touch IR cable PCBs Cables 55LE7500 55LE5500 LCD Module 7 7 7 LED driver 7 Local dimming signal cable Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 59: ...able Master 14P slave 12P BT shield cable SPK cable LOGO Touch IR cable PCBs Cables 7 LED driver master 7 Local dimming signal cable Main LED driver master 7 8 LED driver slave 8 8 Local dimming signal cable Main LED driver slave 8 8 connection cables for each BLU Ass y Col 1 Col 2 Col 3 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use ...

Page 60: ...nterconnection sub PCB 6 5 IR Sensor S T Logo To Main 6 LOGO Touch IR cable 4 SPK unit Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ...when on off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error No response in remote controller key error recording error memory error 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F Exterior error Exterior defect 13 First of all Check whether there is SVC Bulletin in GCS...

Page 62: ...Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 1 13 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A28 A7 A3 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speak...

Page 63: ...place MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 13 LCD TV Error symptom 2 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...ce Main B D Check Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close Menu Setup Booster By using Digital signal level meter By using Diagnostics menu on OSD Menu Red key Signal test Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N N Normal Picture Y Close N A7 Standard Repair Process Establish...

Page 65: ...ce and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A8 N Y End Replace module Request repair for external device cable Color error Check Test pattern A12 A10 A11 Standard Repair Process Established date Revised date 4 13 LCD TV Error symptom 4 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All...

Page 66: ...Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen nor...

Page 67: ... each output of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 5V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A19 A4 Standard Repair Process Established date Revised date 6 13 LCD TV Error symptom 6 Stand By Red Operating white Close 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purp...

Page 68: ...by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reservated Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Download POWEROF...

Page 69: ...nd repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 LCD TV Error symptom Standard Repair Process 8 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 70: ...nd check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 20V or 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Establ...

Page 71: ... Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 5V On Main B D A27 Normal Voltage Close N N Check 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A27 Replace Main B D Y A27 Standard Repair Process Established date Revised date 10 13 LCD TV Error symptom 10 ...

Page 72: ...evice cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 11 13 LCD TV Error symptom Standard Repair Process 11 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 73: ...s shown in the solution manual For models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date 12 13 LCD TV ...

Page 74: ...ller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Adjust VCOM Established date Revised date 13 13 LCD TV Error symptom Standard Repair Process A28 13 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 75: ...11 Check Link Cable LVDS reconnection condition A10 A10 32 42 47 55 12 Adjustment Test pattern ADJ Key A12 13 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 14 Check Link Cable LVDS reconnection condition A10 A10 32 42 47 55 15 Adjustment Test pattern ADJ Key A12 16 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 17 ...

Page 76: ...ER BOARD PIN voltage checking method A19 28 C Audio error_No audio Normal video Checking method in menu when there is no audio A24 29 Voltage and speaker checking method when there is no audio A25 30 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A25 31 D Function error_ No response in remote controller key error Remote controller operation c...

Page 77: ...ht with naked eye A Video error_No video Normal audio After turning on the power and disassembling the case check with the naked eye whether you can see light from 4 locations ALL MODELS LCD TV A1 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...2 Check the DC 20V 24V 12V 3 5V and Inverter on IOP 42 47 Edge LED 55 Edge LED 32 42 47 Error NC Edge LED PWM Dim 1 Inverter ON PWM Dim 1 Edge LED NC GND 24V P204 14 13 12 11 6 10 1 5 Inverter ON PWM Dim 1 GND 24V P205 12 11 6 10 1 5 2010 2 19 IOP 55 14 For LE85 GND Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 79: ...hite Balance value A Video error_No video Normal audio ALL MODELS A4 Established date Revised date Error symptom Content LCD TV A3 Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 7 3 After recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after replacing the MAIN BOARD 2010 2 19 Copyright ⓒ 2010 LG El...

Page 80: ...out 24 NC 23 LE PWM Dim 1 IOP NC 22 12V 21 LE NC IOP PWM Dim 1 20 12V 19 Inverter ON 18 12V 17 NC 16 GND 15 GND 14 GND 13 3 5V 12 3 5V 11 3 5V 10 3 5V 9 GND 8 GND 7 GND 6 GND 5 24V 4 24V 3 24V IOP Edge 55 20V Edge 42 47 2 Power on 1 Pin layout 24P IOP 47 Edge LED 55 Edge LED 32 42 47 2010 2 19 IOP 55 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE ...

Page 81: ...ndard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A6 Established date Revised date Error symptom Content LCD TV A6 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 82: ...Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Error symptom Content LCD TV A7 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 83: ...residual image light spot As the part connecting to the external input check the screen condition by signal A8 Established date Revised date Error symptom Content LCD TV A8 2010 2 19 12 1 9 3 5 8 2 3 6 7 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 84: ...m power supply finally replace the MAIN BOARD Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop ALL MODELS A9 Established date Revised date Error symptom Content LCD TV A9 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 85: ...Color error Check the contact condition of the Link Cable especially dust or mis insertion 32 42 47 55LE7500_LE5500 A10 Established date Revised date Error symptom Content LCD TV A10 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 86: ...sing the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 4 Video error Classification of MODULE or Main B D A12 Established date Revised date Error symptom Content LCD TV A12 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 87: ...older defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange T Con Board 1 A 1 5 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 88: ... Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 A 2 5 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 89: ...ix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 90: ...s damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage A 4 5 Un repairable Cases In this case please exchange the module Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 91: ... Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 A 5 5 Un repairable Cases In this case please exchange the module Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 92: ...Established date Revised date Error symptom Content LCD TV A17 ST BY condition Red Power ON condition white Front LED control Menu Æ Option Æ Power Indicator Æ Standby light ON 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 93: ...IOP PWM Dim 1 20 12V 19 Inverter ON 18 12V 17 NC 16 GND 15 GND 14 GND 13 3 5V 12 3 5V 11 3 5V 10 3 5V 9 GND 8 GND 7 GND 6 GND 5 24V 4 24V 3 24V IOP Edge 55 20V Edge 42 47 2 Power on 1 Pin layout 24P IOP 47 Edge LED 55 Edge LED 32 42 47 For 10 models there is no voltage out for st by purpose When st by only 3 5V is normally on 2010 2 19 IOP 55 Copyright ⓒ 2010 LG Electronics Inc All right reserved ...

Page 94: ...4 NC 23 LE PWM Dim 1 IOP NC 22 12V 21 LE NC IOP PWM Dim 1 20 12V 19 Inverter ON 18 12V 17 NC 16 GND 15 GND 14 GND 13 3 5V 12 3 5V 11 3 5V 10 3 5V 9 GND 8 GND 7 GND 6 GND 5 24V 4 24V 3 24V IOP Edge 55 20V Edge 42 47 2 Power on 1 Pin layout 24P IOP 47 Edge LED 55 Edge LED 32 42 47 2010 2 19 IOP 55 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Inter...

Page 95: ...ndard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A22 Established date Revised date Error symptom Content LCD TV A22 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 96: ... On Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A24 Established date Revised date Error symptom Content LCD TV A24 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 97: ...Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video ALL MODELS A25 Established date Revised date Error symptom Content LCD TV A25 Edge LED 32 42 47 Error out 24 NC 23 LE PWM Dim 1 IOP NC 22 12V 21 LE NC IOP PWM Dim 1 20 12V 19 Inverter ON 18 12V 17 NC 16 GND 15 GND 14 GND 13 3 5V 12 3 5V 11 3 5V 10 3 5V 9 GND 8 GND 7 GND 6 GND 5 24...

Page 98: ...all Standard Repair Process Detail Technical Manual Remote controller operation checking method D Function error_ No response in remote controller key error ALL MODELS A27 Established date Revised date Error symptom Content LCD TV A27 1 2 LED_R 12 Normal 3 3V 11 GND 10 IR 9 LED_B 8 GND 7 St 3 3V 6 KEY2 5 KEY1 4 GND 3 SDA 2 SCL 1 P8200 3 4 2010 2 19 Copyright ⓒ 2010 LG Electronics Inc All right res...

Page 99: ...remote controller And find the V COM value Which is no or minimized the Flicker If there is no flicker at default value Press the exit key and finish the VCOM adjustment Push the OK key to store the value Then the message Saving OK is pop Press the exit key to finish V COM adjustment A28 Established date Revised date Error symptom Content LCD TV 2010 2 19 A28 Copyright ⓒ 2010 LG Electronics Inc Al...

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