LG 47LV3700 Service Manual Download

Page: 72 / 104

ⓒ

LG Electronics. Inc.2009

B. Power error

No power

Power LED

On?

DC Power on
by pressing Power Key
On Remote control

Normal

operation?

Check Power
On ‘”High”

Check Power cord
was inserted properly

Check
Power LED

Replace
Power
B/D

Measure voltage of each output of Power B/D

Normal

voltage?

Replace Main B/D

OK?

Replace Main B/D

Normal?

Check ST-BY 3.5V

Replace Power B/D

Normal

voltage?

Replace Power
B/D

☞

A17

☞

A18

☞

A19

☞

Standard Repair Process

Established

date

Revised date

6/13

LCD TV

Error

symptom

. Stand-By: Red
. Operating: white

※

Close

2010. 12 .14

LGE Internal Use Only

Summary of Contents for 47LV3700

Page 1: ... READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LT12B MODEL 47LV3700 47LV3700 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 MFL67007917 1105 REV00 ...

Page 2: ...nal Use Only Copyright LG Electronics Inc All right reserved Only for training and service purposes 2 CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 17 EXPLODED VIEW 26 SVC SHEET ...

Page 3: ...perate without damage of electrical shock Leakage Current Cold Check 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 p...

Page 4: ...n your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge b...

Page 5: ...e solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced...

Page 6: ...idity 65 10 3 Power Voltage Standard input voltage 100 240V 50 60Hz Standard Voltage of each product is marked by models 4 Specification and performance of each parts are followed each drawing and specification 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 s...

Page 7: ...Humidity 10 90 ALEF Temp 20 60deg Humidity 10 90 5 Storage Environment IOL Temp 20 60deg Humidity 10 90 LGE SPEC 6 Input Voltage AC100 240V 50 60Hz 32 50 W Normal LC320EUN SDV2 32LV3700 DA 42 90 W Normal LC420EUN SDV3 42LV3700 DA FHD 60Hz Edge LED 47 90 W Normal LC470EUE SDV1 37LV3700 DA 100 W Normal V315H3 LE8 32LV5500 DD 60 W Normal LC320EUD SDA1 32LV5500 DD 32 60 W PG LC320EUD SDF1 32LW5700 DA ...

Page 8: ...666 0 x 968 0 x 60 0 LC720DUC SCM1 IOL 3D SG 32 735 4 x 433 x 10 8 V315H3 LE8 Edge Non 3D Size CMI 42 968 4 x 564 x 10 8 V420H2 LE6 Edge Non 3D Maker Inch mm x mm mm LC320EUN SDV2 Edge Non 3D_60Hz LC320EUD SDA1 Edge Non 3D_120Hz 8 LCD Module Pixel Pitch LGD 32 0 36375 x 0 36375 LC320EUD SDF1 Edge3D PG LC420EUN SDV3 EdgeNon 3D_60Hz LC420EUF SDA1 Edge Non 3D_120Hz LC420EUF SDF1 Edge3D PG 42 0 4845 x...

Page 9: ...DA1 Edge LC470EUF SDA1 Edge LC550EUF SDA1 Edge LC320EUD SDF1 Edge LC420EUD SDF1 Edge LC470EUF SDF1 ALEF LC420DUC SDS1 ALEF LC470DUC SDS1 ALEF LC550DUC SDS1 ALEF LC470DUT SDA1 ALEF LC550DUT SDA1 IOL LC720DUC SCM1 1 View angle R L U D 88 88 88 88 degree Edge V315H3 LE8 Edge V420H2 LE6 290 360 Edge LC320EUN SDV2 Edge LC420EUN SDV3 Edge LC470EUE SDV1 320 400 Edge V315H3 LE8 Edge LC320EUD SDA1 Edge LC4...

Page 10: ... ALEF LC470DUC SDS1 ALEF LC550DUC SDS1 900 1 1300 1 ALEF LC470DUT SDA1 ALEF LC550DUT SDA1 3 Module Contrast Ratio 1000 1 1200 1 IOL LC720DUC SCM1 X 0 279 White Y 0 292 X 0 637 Red Y 0 341 X 0 320 Green Y 0 606 X 0 152 Blue Y Typ 0 03 0 055 Typ 0 03 Edge LC320EUN SDV2 X 0 279 4 CIE Color Coordinates White Y 0 292 Typ Edge LC420EUN SDV3 X 0 637 Red Y 0 341 X 0 325 Green Y 0 600 X 0 152 Blue Y Typ 0 ...

Page 11: ...332 X 0 306 Green Y 0 606 X 0 150 Blue Y Typ 0 03 0 058 Typ 0 03 Edge LC470EUF SDF1 X White Y X Red Y X Green Y X Blue Y Typ 0 03 Typ 0 03 ALEF LC420DUC SDS1 Y X X 0 280 White 0 290 0 644 Red Y Typ 0 03 0 331 Typ 0 03 Edge V420H2 LE6 0 297 Green 0 618 0 147 Blue 0 054 X 0 279 White Y 0 292 X 0 644 Red Y X Y X Y 0 333 X 0 306 Green Y 0 604 X 0 150 Blue Y Typ 0 03 0 058 Typ 0 03 Edge LC420EUF SDA1 X...

Page 12: ... 644 Red Y 0 333 X 0 308 Green Y 0 605 X 0 149 Blue Y Typ 0 03 0 059 Typ 0 03 ALEF LC550DUC SDS1 X 0 280 White Y 0 290 X 0 651 Red Y 0 334 X 0 312 Green Y 0 598 X 0 150 Blue Y Typ 0 03 0 068 Typ 0 03 ALEF LC470DUT SDA1 X 0 279 White Y 0 292 X 0 642 Red Y 0 333 X 0 307 Green Y 0 606 X 0 149 Blue Y Typ 0 03 0 068 Typ 0 03 ALEF LC550DUT SDA1 X 0 279 White Y 0 292 X 0 646 Red Y 0 330 X 0 303 Green Y 0...

Page 13: ...Edge V420H2 LE6 Gray to Gray 6 9 Edge LC320EUN SDV2 Edge LC420EUN SDV3 Edge LC470EUE SDV1 8 12 Edge V315H3 LE8 Edge LC320EUD SDA1 Edge LC370EUD SDA1 Edge LC420EUF SDA1 Edge LC470EUF SDA1 8 12 Edge LC320EUD SDF1 Edge LC420EUF SDF1 Edge LC470EUF SDF1 8 12 ALEF LC420DUC SDS1 ALEF LC470DUC SDS1 ALEF LC550DUC SDS1 8 12 ALEF LC470DUT SDA1 ALEF LC550DUT SDA1 5 Response time MPRT 8 12 ms IOL LC720DUC SCM1...

Page 14: ...TV 720P 50Hz 10 1920 1080 28 125 50 00 74 250 HDTV 1080I 50Hz 11 1920 1080 33 72 59 94 74 176 HDTV 1080I 12 1920 1080 33 75 60 00 74 25 HDTV 1080I 13 1920 1080 26 97 23 976 74 176 HDTV 1080P 14 1920 1080 27 00 24 000 63 36 HDTV 1080P 15 1920 1080 33 71 29 97 79 120 HDTV 1080P 16 1920 1080 33 75 30 00 79 20 HDTV 1080P 17 1920 1080 56 25 50 148 5 HDTV 1080P 18 1920 1080 67 432 59 94 148 350 HDTV 108...

Page 15: ...8 125 50 00 74 250 HDTV 1080I 50Hz 11 1920 1080 33 72 59 94 74 176 HDTV 1080I 12 1920 1080 33 75 60 00 74 25 HDTV 1080I 13 1920 1080 26 97 23 976 74 176 HDTV 1080P 14 1920 1080 27 00 24 000 63 36 HDTV 1080P 15 1920 1080 33 71 29 97 79 120 HDTV 1080P 16 1920 1080 33 75 30 00 79 20 HDTV 1080P 17 1920 1080 56 25 50 148 5 HDTV 1080P 18 1920 1080 67 432 59 94 148 350 HDTV 1080P 19 1920 1080 67 5 60 00 ...

Page 16: ... by Side half Top and bottom 9 1920 1080 56 25 50 148 5 HDTV 1080P Side by Side half Top and bottom 10 1920 1080 33 7 60 74 25 HDTV 1080i Side by Side half Top and Bottom 11 1920 1080 28 1 50 74 25 HDTV 1080i Side by Side half Top and Bottom No Resolution H freq kHz V freq kHz Pixel clock Proposed 3D input proposed mode 1 1280 720 45 00 60 00 74 25 HDTV 720P Side by Side Top Bottom 2 1280 720 37 5...

Page 17: ...k 4 Input Tool Option 5 Download EDID EDID data are automatically downloaded when adjusting the Tool Option 6 ADC Calibration RGB Component 7 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 5 LAN Inspection Guide 6 Widevine Key Inspection Guide 7 Model name Serial nu...

Page 18: ...2 2 3 2 Execute PINT Test program Check setting data of program TV Set IP 12 12 2 2 3 Push Power Only key on Adjust remote controlle 4 Click RUN Check OK or NG 4 3 Main S W program download 4 3 1 Using the Memory Stick USB DOWNLOAD Service Mode 1 Insert the USB memory Stick to the USB port 2 Automatically detect the SW Version S W download process is executed automatically 3 Show the message Copy ...

Page 19: ...W9500 Tool Option1 33115 33112 Tool Option2 5461 5461 Tool Option3 3327 3327 Tool Option4 35003 35003 Tool Option5 47695 47695 Tool Option6 697 697 MODEL 55LW7700 47LW7700 42LW7700 Tool Option1 33083 33080 33078 Tool Option2 5461 5461 5461 Tool Option3 3327 3327 3327 Tool Option4 51387 51387 51387 Tool Option5 47693 47693 47693 Tool Option6 665 665 665 35044 32996 35046 32998 33000 MODEL 55LV5500 ...

Page 20: ...0 98 HDMI 1 256Bytes G 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 15 01 03 80 10 09 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 71 40 81 C0 81 00 81 80 95 00 30 90 40 A9 C0 B3 00 02 3A 80 18 71 38 2D 40 58 2C 40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30 50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 39 60 3F 1F 52 10 00 0A 20 20 20 20 20 20 0...

Page 21: ... 40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30 50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 39 60 3F 1F 52 10 00 0A 20 20 20 20 20 20 00 00 00 FC 70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 7F 80 02 03 26 F1 4E 10 1F 84 13 05 14 03 02 12 20 21 90 22 15 01 26 15 07 50 09 57 07 67 03 0C 00 30 00 A0 B8 2D E3 05 03 01 01 1D 80 18 71 1C 16 20 58 2C B0 25 00 A0 5A 00 00 00 9E 01 1D 00 80 51 ...

Page 22: ... 150cd in the Cool Medium Warm mode For LCD 5 2 2 Adjustment of White Balance for Manual adjustment Color analyzer CA100 CA210 should be used in the calibrated ch by CS 1000 Operate the zero calibration of the CA100 or CA 210 then stick sensor to the module when adjusting For manual adjustment it is also possible by the following sequence 1 Select white pattern of heat run by pressing POWER ON key...

Page 23: ...mote controller Step 3 Block the Intelligent Sensor module on the front C A about 6 seconds When the Sensor Data is lower than 20 you can see the OK message If it doesn t show OK message the Sensor Module is defected one You have to replace that with a good one Step 4 After check the OK message come out take out your hand from the Sensor module Check Sensor Data value change from 0 to 300 or not I...

Page 24: ...nostics DTV country only Buyer model displayed ex 42LV5500 DD 5 6 2 Method Auto 1 Press Power on key of service remocon Baud rate 115200 bps 2 Connect RS232 Signal Cable to RS 232 Jack 3 Write Serial number by use RS 232 4 Must check the serial number at Instart menu 5 6 3 Method Manual If the TV set is downloaded By OTA or Service man Sometimes model name or serial number is initialized Not alway...

Page 25: ... test Recommend Change battery for every Lot 5 10 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 11 3D Function test 5 11 1 Equipment Pattern Generator MSPG 3233 HDMI mode 37 pattern No 81 5 11 2 Process 1 Connect HDMI HDMI mode 371 Pattern No 81 2 Insert ...

Page 26: ...ny electrical 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 man...

Page 27: ...N AE27 TXOUT0_L0P AE28 TXOUT0_L1N AF27 TXOUT0_L1P AF28 TXOUT0_L2N AG27 TXOUT0_L2P AG28 TXCLK_LN AE26 TXCLK_LP AF26 TXOUT0_L3N AH27 TXOUT0_L3P AG26 TXOUT0_L4N AF25 TXOUT0_L4P AE25 TXOUT0_U0N AH26 TXOUT0_U0P AG25 TXOUT0_U1N AE24 TXOUT0_U1P AD24 TXOUT0_U2N AH25 TXOUT0_U2P AF24 TXCLK_UN AE23 TXCLK_UP AD23 TXOUT0_U3N AG24 TXOUT0_U3P AF23 TXOUT0_U4N AC22 TXOUT0_U4P AD22 TXOUT1_L0N AG23 TXOUT1_L0P AH23 T...

Page 28: ...PIO J3 TDATD_4 GPIO K2 TDATD_5 GPIO K1 TDATD_6 GPIO K3 TDATD_7 GPIO L1 TSTRTD GPIO L3 TVLDD GPIO L2 MPEG_CLK GPIO P4 MPEG_D_0 GPIO T2 MPEG_D_1 GPIO R3 MPEG_D_2 GPIO R2 MPEG_D_3 GPIO P3 MPEG_D_4 GPIO P2 MPEG_D_5 GPIO P1 MPEG_D_6 GPIO R6 MPEG_D_7 GPIO N5 MPEG_SYNC GPIO T4 MPEG_DATA_EN GPIO P5 MCIF_RESET GPIO R4 MCIF_SCLK GPIO U1 MCIF_SCTL GPIO T3 MCIF_SDI GPIO T1 MCIF_SDO GPIO T5 VI_IFP0 C17 VI_IFM0...

Page 29: ...18 VI_INCM_CVBS2 C19 VI_CVBS3 A19 VI_INCM_CVBS3 B19 VI_CVBS4 C20 VI_INCM_CVBS4 B20 VI_SIF1_1 E19 VI_INCM_SIF1_1 D19 VI_SIF1_2 E10 VI_INCM_SIF1_2 F11 LGE35230 BCM35230KFSBG IC101 NON_BCM_CAP SPDIF_INC_P B15 SPDIF_INC_N C15 SPDIF_IND_P C14 SPDIF_IND_N B14 I2SSCK_IN GPIO G4 I2SWS_IN F4 I2SSD_IN GPIO G5 AADC_LINE_L1 C25 AADC_LINE_R1 B24 AADC_INCM1 A24 AADC_LINE_L2 E22 AADC_LINE_R2 E23 AADC_INCM2 D23 A...

Page 30: ...5 DDR_ADA_10 AA27 DDR_ADA_11 AC27 DDR_ADA_12 AA26 DDR_ADA_13 AA24 DDR_ADA_14 AD27 DDR_BAA_0 Y27 DDR_BAA_1 AB28 DDR_BAA_2 W24 DDR_RASA_N V24 DDR_CASA_N W25 DDR_WEA_N V26 DDR_CKEA U24 DDR_CKA01_P W27 DDR_CKA01_N W28 DDR_CKA23_P N28 DDR_CKA23_N N27 DDR_VREFA U23 DDR_RST_N AA23 DDR_ZQ W26 C421 2 2uF C403 2 2uF C407 2 2uF NFM18PS105R0J C410 6 3V OUT IN GND NFM18PS105R0J C432 6 3V OUT IN GND NFM18PS105R...

Page 31: ...F 16V R640 10K R623 10K PWM_LED FLMD0 EEPROM_SDA HDMI_CEC SDA2_3 3V R630 22 WIRELESS_DET NEC_ISP_Rx IC602 uPD78F0514 NEC_MICOM 1 P60 SCL0 2 P61 SDA0 3 P62 EXSCL0 4 P63 5 P33 TI51 TO51 INTP4 6 P75 7 P74 8 P73 KR3 9 P72 KR2 10 P71 KR1 11 P70 KR0 12 P32 INTP3 OCD1B 13 P31 INTP2 OCD1A 14 P30 INTP1 15 P17 TI50 TO50 16 P16 TOH1 INTP5 17 P15 TOH0 18 P14 RXD6 19 P13 TXD6 20 P12 SO10 21 P11 SL10 RXD0 22 P1...

Page 32: ...CL_4 DDC_SDA_3 VR708 OPT 10V D0 _HDMI3 HDMI_HPD_4 DDC_SCL_1 R708 10 5V_HDMI_3 D0 _HDMI4 C707 10uF 10V CK _HDMI1 5V_Normal 5V_HDMI_2 CK _HDMI4 D1 _HDMI2 R723 4 7K D0 _HDMI4 C703 0 1uF 16V R741 120K DDC_SDA_1 DDC_SDA_1 D2 _HDMI3 HDMI_HPD_4 D0 _HDMI1 R720 4 7K C712 0 1uF 16V DDC_SDA_2 C713 0 1uF 16V 3 3V_HDMI 5V_HDMI_1 C715 0 1uF 16V OPT JK702 RSD 105156 100 EAG62611201 14 NC 13 CE_REMOTE 5 D1_GND 20...

Page 33: ... C803 0 1uF 16V HP_LOUT R823 4 7K R819 10K SPK_R _HOTEL 3 3V_Normal JP809 D803 30V OPT R815 2 7K R833 100 C824 0 1uF 16V HP_DET C801 560pF 50V HP_LOUT_N DSUB_HSYNC R808 10K OPT SPK_R _HOTEL NEC_RXD L804 BG2012B080TF 3 3V_Normal RGB_DDC_SCL PC_R_IN JK805 SPG09 DB 009 1 2 3 4 5 6 7 8 9 10 C818 1uF 10V HP_LOUT Q801 2SC3052 E B C C816 1uF 10V C823 2 2uF 10V DSUB_G D810 KDS184 A2 C A1 D804 30V R813 75 ...

Page 34: ... R917 47K COMMERCIAL D904 5 6V CDS3C05HDMI1 R929 1 5K R928 1 5K IR_PASS Q905 2SC3052 COMMERCIAL E B C D906 5 6V CDS3C05HDMI1 R933 100 R908 47K Q904 2SC3052 WIRELESS E B C R919 10K 1 D901 5 6V AMOTECH R918 47K WIRELESS L902 BLM18PG121SN1D 3 3V_Normal D907 5 6V AMOTECH R912 47K WIRELESS R921 47K COMMERCIAL P901 12507WR 15L IR_15P 1 EEPROM_SCL 2 EEPROM_SDA 3 GND 4 KEY1 5 KEY2 6 3 5V 7 GND 8 LED_B LOG...

Page 35: ... JK1001 KJA PH 3 0168 WIRELESS 14 GND_3 13 I2C_SDA 5 VCC 24V 20V 17V _1 12 I2C_SCL 11 GND_2 2 VCC 24V 20V 17V _2 19 GND_5 18 IR 10 RESET 4 VCC 24V 20V 17V _4 1 VCC 24V 20V 17V _1 17 GND_4 9 GND_1 8 INTERRUPT 3 VCC 24V 20V 17V _3 16 UART_TX 7 DETECT 6 VCC 24V 20V 17V _1 15 UART_RX 20 GND_6 21 SHIELD WIRELESS_SDA D1002 5 6V CDS3C05HDMI1 WIRELESS WIRELESS_SCL R1002 22K WIRELESS C1002 2 2uF WIRELESS R...

Page 36: ... D1108 5 6V ZD1110 5 1V 3 3V_Normal R1136 10 ZD1114 5 1V D1101 5 6V C1108 560pF 50V C1114 560pF 50V COMP2 C1109 560pF 50V AV1_CVBS_IN SC_G COMP2_Y R1129 1K AV2 R1126 75 COMP2 AV1_R_IN D1112 5 6V COMP2 AV2_L_IN R1111 470K ZD1112 5 1V R1110 470K D1105 5 6V R1123 470K COMP2 R1127 2 7K COMP2 R1125 75 COMP2 COMP1_DET SC COMP2_L_IN R1122 470K COMP2 ZD1106 5 1V COMP2 R1121 0 COMP2 SC_R COMP2_Pr C1110 560...

Page 37: ..._USB_DM USB_DM1 C1212 1uF 10V WIFI R1223 2 7K USB_OCD1 C1208 0 1uF WIFI USB_CTL2 D1205 5 6V CDS3C05HDMI1 USB_OCD2 C1214 0 1uF WIFI R1214 100K OPT USB_CTL2 R1227 0 NON_WIFI C1224 0 1uF SIDE_USB_OCD1 USB_CTL1 R1206 100K WIFI USB_DP1 C1204 1uF 10V WIFI WIFI_DM R1226 0 NON_WIFI 5V_USB WIFI_DP SIDE_USB_DM USB_DP1 P1201 12507WR 04L WIFI 1 VDD 2 DM 3 DP 4 GND 5 L1203 BLM18PG121SN1D WIFI WIFI_DM R1221 4 7...

Page 38: ...3D_SYNC_RF R1320 22 M_REMOTE R1326 22 M_REMOTE DD_MREMOTE R1322 2 7K M_REMOTE 3D_GPIO_1 3D_GPIO_0 M_REMOTE_RX R1325 22 M_REMOTE M_RFModule_RESET 3D_GPIO_2 R1321 2 7K M_REMOTE 3 3V_Normal P1302 12507WR 12L M_REMOTE 1 3 3V 2 GND 3 RX 4 TX 5 RESET 6 DC 7 DD 8 GND 9 GPIO_0 10 GPIO_1 11 GPIO_2 12 3D_SYNC 13 3 3V_Normal R1317 100 M_REMOTE R1323 2 7K M_REMOTE L1303 120 ohm M_REMOTE R1318 100 M_REMOTE R13...

Page 39: ...01 MLB 201209 0120P N2 EPHY_RDP 3 3V_Normal EPHY_RDN C1401 0 1uF 16V 2 5V_BCM35230 EPHY_TDN EPHY_ACTIVITY EPHY_LINK JK1401 XRJH 01A 4 DA7 180 LG B 1 R1 2 R2 3 R3 4 R4 5 R5 6 R6 7 R7 8 R8 12 SHIELD 9 R9 11 R11 10 R10 GND D1 YL_C D2 YL_A D3 GN_C D4 GN_A D1403 5V LAN_ESD D1405 5V LAN_ESD D1401 5 5V LAN_ESD D1404 5 5V LAN_ESD D1402 5 5V LAN_ESD D1406 5 5V LAN_ESD R1401 240 R1402 240 DUAL COMPONENT D14...

Page 40: ...3V_Normal TXB3N R1504 33 FRC2 P1502 FI RE41S HFK A LVDS_41P 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 TXA0N TXD2N R1512 10K BIT_SEL_LOW TXB0N TXC0P TXACLKN TXD0N C1501 10uF 25V OPT TXC1P TXC3N TXB1P TXC2P TXC0N TXBCLKP TXC4N TXCCLKP TXA1P TXD1P TXDCLKN SDA2_3 3V TXCCLKN TXBCLKN R1507 33 FRC2 TXD0P TXB4N TXB2P TXC4P TXD4P TX...

Page 41: ...K HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC SCL2_3 3V R1602 33 LPB_42 47 55 SDA2_3 3V R1601 33 LPB_42 47 55 L DIM0_MOSI L DIM0_SCLK L DIM0_VS P1601 12507WR 08L L Dim Wafer 1 2 3 4 5 6 7 8 9 50 BCM35230 16 L_DIMMING Local Dimming Block ...

Page 42: ...0pF 50V SPK_L 0 1uF C1841 50V WOOFER R1827 12 WOOFER AUD_MASTER_CLK D1804 100V 1N4148W OPT R1801 10K C1834 1000pF 50V SPK_WOOFER_R AMP_RESET_N 0 1uF C1877 50V R1851 3 3 OPT 0 1uF C1840 50V C1810 10uF 10V OPT 0 1uF C1832 16V AUD_LRCK C1869 0 47uF 50V WOOFER C1813 33pF 50V NTP_WOOFER AUD_SCK C1817 10uF 10V OPT C1856 1uF 25V SPK_WOOFER_L 0 1uF C1879 50V D1803 100V 1N4148W OPT C1864 390pF 50V 24V_AMP ...

Page 43: ... PCM_IORD Q1902 AO3407A CI G D S CI_CD2 CI_ADDR 1 CI_TS_CLK C1911 0 1uF 16V OPT R1969 10K CI CI_ADDR 9 C1915 0 1uF 16V OPT R1980 100 CI R1945 10K OPT R1966 10K CI R1985 10K CI R1936 0 OPT R1949 22 CI R1937 62 CI R1959 22 CI PCM_MCLKI PCM_TS_SYNC C1904 0 1uF CI CI_MIVAL_ERR CI_ADDR 13 CI_MISTRT R1947 22 CI PCM_ADDR 4 PCM_MDI 0 7 PCM_ADDR 9 3 3V_CI R1931 22 CI CI_ADDR 12 R1918 22 OPT R1903 22 CI PCM...

Page 44: ... GND 13 B2 1 2V 14 B3 3 3V 15 RESET 16 NC_4 17 SCL 18 SDA 19 ERR 20 SYNC 21 VALID 22 MCL 23 D0 24 D1 25 D2 26 D3 27 D4 28 D5 29 D6 30 D7 31 SHIELD TU2202 4 TDFR C056D CN_VERTIAL_LG3911 1 RF_S W_CNTL 2 BST_CNTL 3 B1 5V 4 NC RF_AGC 5 NC_1 6 SCLT 7 SDAT 8 NC_2 9 SIF 10 NC_3 11 VIDEO 12 GND 13 B2 1 2V 14 B3 3 3V 15 RESET 16 NC_4 17 SCL 18 SDA 19 ERR 20 SYNC 21 VALID 22 MCL 23 D0 24 D1 25 D2 26 D3 27 D...

Page 45: ... SMAB34 LNB R2314 0 LNB C2309 27pF OPT DCDC_GND R2313 0 LNB 12V_LNB A_GND A_GND A_GND C2311 10uF 25V LNB R2301 33 LNB C2307 0 01uF 50V LNB SDA1_3 3V C2302 1uF 50V LNB LNB_INT R2304 4 7K LNB DCDC_GND A_GND C2306 22000pF LNB C2301 0 22uF 25V IC2301 A8290SETTR T LNB 1 BOOST 3 TCAP 7 TDI 9 VREG 10 SDA 11 ADD 12 SCL 13 NC_2 14 IRQ 15 NC_3 16 NC_4 17 NC_5 18 NC_6 19 BFC 20 NC_7 21 NC_8 22 BFO 23 NC_9 24...

Page 46: ...C_GND 15 SYNC_OUT 16 SYNC_IN 17 COM_GND 18 AV_DET 19 SHIELD C2515 100uF 16V EU C2516 100pF 50V EU R2545 10K EU R2516 0 EU SC_FB R2511 470K EU Q2502 2SC3052 EU E B C DTV_ATV_SELECT D2501 5 5V EU 12V R2519 1K AUD_OUT R2536 470 EU C2517 100pF 50V EU C2524 47uF 16V EU C2511 0 1uF EU Q2505 RT1P141C T112 EU 1 2 3 D2512 30V OPT R2558 10K OPT C2532 180pF 50V OPT DTV MNT_R_OUT R2514 10K EU SC COMP2_R_IN D2...

Page 47: ...FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC CHBO_TS_SYNC CHBO_TS_SERIAL CHB_RESET CHBO_TS_VAL_ERR CHBO_TS_CLK TS Output 50 28 BCM35230 NON CHB NON CHB ...

Page 48: ... THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC AMP_MUTE_HOTEL AMP_MUTE_HOTEL SPK_R _HOTEL C2901 0 1uF CN_HOTEL P2901 12505WS 09A00 CN_HOTEL 1 2 3 4 5 6 7 8 9 10 R2904 0 CN_HOTEL 3 3V_Normal SPK_R _HOTEL AMP_RESET_N R2903 0 CN_HOTEL AUDIO_R Q2901 MMBT3904 NXP CN_HOTEL E B C R2901 200 CN_HOTEL R2902 10K CN_HOTEL 24V_AMP 1ST EBK61012601 2ND 0TRDI80002A DUAL COMPONENT CHINA HOTEL BCM3523...

Page 49: ... FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 3D_SYNC L_VS 36 BCM35230 NON URSA 50 ...

Page 50: ...0210 M2 1 GASKET_5 0T MDS62110210 M4 1 GASKET_5 0T MDS62110210 M3 1 GASKET_5 0T MDS62110210 M7 1 GASKET_5 0T MDS62110210 M6 1 GASKET_5 0T MDS62110210 M5 1 GASKET_5 0T MDS62110210 M8 1 GASKET_5 0T MDS62110210 M11 1 GASKET_5 0T MDS62110210 M10 1 GASKET_5 0T MDS62110210 M9 1 GASKET_5 0T MDS62110210 M12 1 GASKET_5 0T MDS62110206 M2 3 GASKET_6 5T MDS62110206 M4 3 GASKET_6 5T MDS62110206 M3 3 GASKET_6 5...

Page 51: ...08 M14 GASKET_4 5T MDS62110206 M13 3 GASKET_6 5T MDS62110210 M15 1 GASKET_5 0T MDS62110204 M15 2 GASKET_5 5T MDS62110206 M15 3 GASKET_6 5T MDS62110205 M13 4 GASKET_7 5T MDS62110205 M15 4 GASKET_7 5T MDS62110210 M14 1 GASKET_5 0T MDS62110209 M15 5 GASKET_8 5T MDS62110206 M14 3 GASKET_6 5T MDS62110208 M15 GASKET_4 5T MDS62110209 M14 5 GASKET_8 5T MDS62110210 M13 1 GASKET_5 0T MDS61887710 M14 6 GASKE...

Page 52: ...5 0 47uF 25V 1 5V_DDR R591 10K POWER_ON OFF1 3 5V_ST R518 0 POWER_16_GND C591 0 1uF 16V C539 10uF 6 3V C594 22uF 10V 560pF C593 50V 10uF C590 10V L517 BLM18PG121SN1D L DIM0_VS L_VS R574 0 POWER_16_URSA_SCAN R573 0 POWER_16_BCM_SCAN R595 4 3K 1 R593 3 9K 1 R592 1K 1 R510 3 4 7K 1 PD_ 18 5V R510 4 5 6K 1 PD_ 20V R511 3 1 21K 1 PD_ 18 5V R511 4 1 3K 1 PD_ 20V R517 100K R516 100K PD_ 18 5_20_24V R512 ...

Page 53: ......

Page 54: ... Upper Metal Cover LED Array LED Array is on the side of Module Local dimming depicts more deep black Feature 2 types of LED Edge Model XXLW750T W S G 42inch H 2 V 8 16Block 42inch H 2 V 8 16Block 42inch H 2 V 8 16Block Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ...ts more deep black Feature 2 types of LED ALEF Model XXLW950T W S G 47inch H 24 V 10 240Block 55inch H 24 V 12 288Block XXLW770T W S G 42inch H 12 V 4 48Block 47inch H 12 V 5 60Block 55inch H 16 V 6 96Block Reflecting coating w patterns Guiding Layer Light Blocking Pattern Prism sheets DBEF PCB Diffuser plate Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purp...

Page 56: ...Memory 2 3 4 Micom for Key IR sensing HDMI switch 4 1 Audio AMP 10W 10W XXLW9500 XXLV5500 wifi W O LV5500 Soft touch IR RF assy W O LV5500 Front Spk Woofer Spk W O LV5500 To T CON BOARD W LV5500 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ... HDMI2 HDMI3 HDMI4 Side Rear COMP RGB H V Ethernet CVBS CAM DVR Ready H P L R Out UART SYSTEM EEPROM X 1 1Mb HDMI S W HDCP EEPROM M Remote Module I2C Sub Micom sanyo Wireless Ready I2C USB HUB IC Air ISDB T TUNER T C TUNER T C Cable ANALOG DEMOD 51P HDMI HUB IC BCM35230 Block Diagram S W Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use ...

Page 58: ...OM RGB_DDC_SCL RGB_DDC_SDA RGB_DDC_SCL RGB_DDC_SDA PC_L_IN PC_R_IN SPDIF_OUT SPDIF R L CVBS AV DET AV1_R_IN AV1_L_IN AV1_CVBS_IN AV1_CVBS_DET COMP_Y COMP_PB COMP_PR COMP DET COMP1 R L CVBS AV DET AV1_R_IN AV1_L_IN AV1_CVBS_IN AV1_CVBS_DET AV1 AV2 COMP2 OPT COMP2_R G B 0 OHM BSC_S_SCL BSC_S_SDA Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Interna...

Page 59: ...ED BLU control SPI Vsync FRC II LG1121 Main SoC BCM FHD 60Hz Dual Link LVDS 2 3D_Sync 2D 3D LGSIC XTR T Con LGSIC FHD 240Hz Quad Link HF mini LVDS 8 FHD 60Hz Dual Link LVDS 2 4 FHD 240Hz Octa Link LVDS Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 60: ...e Main Module LVDS cable 51PIN LED driver PSU T CON to Module 80pin FFC Multi cable IR MOTION WIFI SPK WOOFER SPK CABLE PCBs Cables XXLW9500 ALEF Module Assy PSU Local dimming cable 8pin 7 6 7 1 2 2 3 4 5 6 7 1 2 3 4 5 6 7 3 4 7 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ... 4 5 Main PSU cable Main Module LVDS cable Multi cable IR Soft Touch SPK CABLE PCBs Cables PSU Drive B D Cable LED driver Edge Module Assy 1 3 2 1 2 3 4 5 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...ble 51PIN LED driver PSU T CON to Module 80pin FFC Multi cable IR MOTION WIFI SPK WOOFER SPK CABLE PCBs Cables Main PSU SPK CABLE 7 6 7 1 2 2 3 4 Soft Touch Assy 5 6 7 Sub PSU 8 8 1 2 3 3 4 4 5 6 7 Main PSU Sub PSU CABLE 8 8 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 63: ...00 Series Soft Touch IR PCB RF MOTION ASSY WIFI ASSY To Main 1 SPK unit WIFI ASSY RF MOTION ASSY Soft Touch IR PCB Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...erconnection sub PCB LV5500 Series Soft Touch IR PCB To Main 1 SPK unit Soft Touch IR PCB Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 65: ... 72LZ9700 IR PCB To Main 1 IR PCB Soft Touch PCB RF Motion Assy SPK unit Soft Touch RF Motion Assy 2 To Main Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...ower 6 7 Off 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 Bu...

Page 67: ...rts End 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 Cab...

Page 68: ...o Check and replace 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 69: ...tin Replace 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 Set up Support 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 P...

Page 70: ...xternal device 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 12 14 Copyright ⓒ 2011 LG Electr...

Page 71: ... connecting 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 ...

Page 72: ... voltage of 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 3 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training an...

Page 73: ...Y Power off 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 Down...

Page 74: ...r Board and 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 75: ...Input Connect and 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 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N En...

Page 76: ...eck Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A27 Normal Voltage Close N N Check 3 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 Er...

Page 77: ...ix external device 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use ...

Page 78: ...hen proceed as 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 ...

Page 79: ...emote controller 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 80: ...eck Link Cable LVDS reconnection condition A10 A11 A10 32 37 42 47 55 A11 32 AUO 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 A11 A10 32 37 42 47 55 A11 32 AUO 15 Adjustment Test pattern ADJ Key A12 16 Appendix Defected Type caused by T Con Inverter Module E...

Page 81: ...e viewing POWER 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 controlle...

Page 82: ... LCD back light 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 83: ...te Revised date Error symptom Content LCD TV A2 Check the DC 24V 12V 3 5V and Inverter on ALEF LED Edge LED P dim A dim Inverter ON Error GND 24V P203 14 13 12 11 6 10 1 5 P dim A dim Inverter ON Error GND 24V P202 14 13 12 11 6 10 1 5 2010 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 84: ...anual Check White 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 12 14 Copyrigh...

Page 85: ... H24S YEONHO Error out 24 N C Lamp SCANNING Model PWM Dim 2 23 PWM Dim 1 22 12V 21 Lamp A Dim LED N C 20 12V 19 Inverter On off 18 12V 17 GND 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 20V 24V 4 20V 24V 3 20V 24V 2 Power on 1 24 Pin Power Board Main Board 공통 ALEF LED Edge LED 2010 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and...

Page 86: ...B etc Standard 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 87: ...o lag stop 1 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 88: ... Horizontal bar 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 ALL MODELS 2010 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 89: ... voltage from 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 90: ...ition A Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion A10 Established date Revised date Error symptom Content LCD TV A10 ALL MODELS 2010 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 91: ...of patterns using 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 92: ... CNT Broken Solder 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 ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 93: ...bnormal Power 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 ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 94: ...c 2009 Appendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 95: ... leakage Press 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 ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 96: ...ertical Block 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 ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 97: ...o power A17 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 98: ...ormally on Check the DC 20V 24V 12V 3 5V SMAW200 H24S YEONHO Error out 24 N C Lamp SCANNING Model PWM Dim 2 23 PWM Dim 1 22 12V 21 Lamp A Dim LED N C 20 12V 19 Inverter On off 18 12V 17 GND 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 20V 24V 4 20V 24V 3 20V 24V 2 Power on 1 24 Pin Power Board Main Board 공통 ALEF LED Edge LED 2010 12 14 Copyright ⓒ 2011 LG Electron...

Page 99: ...4S YEONHO Error out 24 N C Lamp SCANNING Model PWM Dim 2 23 PWM Dim 1 22 12V 21 Lamp A Dim LED N C 20 12V 19 Inverter On off 18 12V 17 GND 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 20V 24V 4 20V 24V 3 20V 24V 2 Power on 1 24 Pin Power Board Main Board 공통 ALEF LED Edge LED 2010 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and se...

Page 100: ...nt item 3 Standard 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 101: ... from Off to 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 12 14 Copyright ⓒ 2011 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 102: ...l 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 SMAW200 H24S YEONHO Error out 24 N C Lamp SCANNING Model PWM Dim 2 23 PWM Dim 1 22 12V 21 Lamp A Dim LED N C 20 12V 19 Inverter On off 18 12V 17 GND 16 GND 15 GND 14 GND 13 3 5V 12 3 5V 11 3 5V 10 3 5V 9 GND ...

Page 103: ...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 3 3V_Normal 11 LED_R BUZZ 12 GND 13 ST_SDA 15 ST_SCL 14 GND 10 IR 9 LED_B logo_PWM 8 GND 7 St 3 5V 6 KEY2 5 KEY1 4 GND 3 SDA 2 SCL 1 P8200 2010 12 14 Copyright ⓒ 2011 LG...

Page 104: ...utton on the 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 A28 2010 12 14 Copyright ⓒ 2011 LG Elec...

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