LG 22LS5400/540T Service Manual Download Page 15 | Manualshive

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LGE Internal Use Only

Copyright ©

LG Electronics. Inc. All rights reserved.

Only for training and service purposes

2. No Picture

Module

Back Light On ?

Check WLED_ENABLE high

R1127

Check IC101

Replace Main Scaler IC

N

N

Check Panel clock

P1002(#10,11,22,23)

Check IC101

Repair Main B/D

N

Check Panel power

P1002(#1,2,3) 5V

IC802 Output 5V

Replace IC802

N

Y

Replace T-con

Board or module

Check FFC Cable for damage

or open conductors.

Replace Cable

N

Y

Y

Y

Check LED Driver output

(P1101/P1103 #1,2,5,6)

Check LED Driver IC1100

Replace LED Driver IC

N

Y

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Summary of Contents for 22LS5400/540T

Page 1: ...400 540T MODEL 22LS5400 540T ZA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED LCD TV SERVICE MANUAL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ...s Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 TROUBLE SHOOTING 14 BLOCK DIAGRAM 22 EXPLODED VIEW 23 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...inals etc to be sure the set is safe to operate 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 m...

Page 4: ...lectrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial 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...

Page 5: ...he 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 replace...

Page 6: ... Demanded other specification Safety CE IEC specification EMC CE IEC 4 Model General Specification No Item Specification Remarks 1 Market Albania Austria Belgium Bosnia Bulgaria Coratia Czech Denmark Estonia Finland France Germany Greece Hungary Ire land Italy Kazakhstan Latvia Lithuania Luxembourg Morocco Netherlands Nor way Poland Portugal Romania Russia Serbia Slovenia Spain Sweden Slovakia Swi...

Page 7: ...nent RGB HDMI1 2 Angle 1EA 11 USB 1EA Picture Music Movie SVC Software Update Picture Music Movie 12 Local Key Touch 13 LAN JACK Modular 2XLS540T Only UK 5 Timing 5 1 RGB HDMI PC No Specification Remark Resolution H freq kHz V freq Hz Pixel clock MHz 1 720 400 31 468 70 080 28 321 2 640 480 31 469 59 940 25 175 3 640 480 37 500 75 000 31 500 4 800 600 37 879 60 317 40 000 5 800 600 46 875 75 000 4...

Page 8: ...0 30 000 74 250 HDTV 1080P 9 1920 1080 56 250 50 000 148 500 HDTV 1080P 10 1920 1080 67 430 67 500 59 940 60 000 148 350 148 500 HDTV 1080P 5 3 Component No Specification Remark Resolution H freq kHz V freq Hz Pixel clock MHz 1 720 480 15 730 59 940 13 500 SDTV DVD 480I 525I 2 720 480 15 750 60 000 13 514 SDTV DVD 480I 525I 3 720 576 15 625 50 000 13 500 SDTV DVD 576I 625I 50Hz 4 720 480 31 470 59...

Page 9: ...g check OK message USB DOWNLOAD epk file download 1 Make New folder named LG_DTV and put ISP file epk in the folder 2 Put the USB Stick to the USB socket 3 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t work But your downloaded version is High USB data is automatically detecting 4 Show the message Copying files from memory 5 Updati...

Page 10: ...0 HDMI2 20 Check sum HDMI1 F6 HDMI2 E6 3 3 Function Check 3 3 1 Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV SCART CVBS 3 COMPONENT 480i 4 RGB PC 1920 x 1080 60Hz 5 HDMI1 2 6 PC Audio In Display and Sound check is executed by Remote controller Caution Not to push the INSTOP KEY after completion if the function inspection EZ ADJUST 0 Tool Option1 1 Tool Option...

Page 11: ... was downloaded or not at In Start menu Refer to below Check the Download to CI Key value in LG set 3 4 1 Check the method of CI Key value 1 Check the method on Instart menu 2 Check the method of RS232C Command 1 Into the main ass y mode RS232 aa 00 00 2 Check the key download for transmitted command RS232 ci 00 10 3 Result value Normally status for download OKx Abnormally status for download NGx ...

Page 12: ...ART CVBS 3 COMPONENT 480i 4 RGB PC 1920 x 1080 60Hz 5 HDMI1 2 6 PC Audio In Display and Sound check is executed by Remote control Caution Not to push the INSTOP KEY after completion if the function inspection 4 3 2 PCMCIA CARD Check You must adjust DTV 29 Channel and insert PCMCIA CARD to socket If PCMCIA CARD works normally video signals will appear on screen But it works abnormally No CA module ...

Page 13: ...4 6 Model name SW version Adjust check Press the Instart key of ADJ remote controller 4 6 1 Model Name SW Version Check 1 Check Model Name 2 Check S W Version Refer to the IC Ver in the BOM 4 6 2 Adjust Check 1 Check Country Group 2 Check Area Option 3 Check Tool Option Refer to the BOM Comments 4 Check Adjust ADC Comp RGB is OK 5 Check EDID RGB HDMI1 2 is OK After check all Press the EXIT key of ...

Page 14: ...eplace Adapter N N Check IC802 output Voltage Level 5V Replace IC802 Recheck N Check IC2602 Output Voltage Level 3 3V_ST Replace IC2602 N Y Check IC806 Output Voltage Level 1 24V Replace IC806 Recheck N Y Y Check IC810 Output Voltage Level 2 5V Replace IC810 Recheck N Y Check IC807 Output Voltage Level 1 5V Replace IC807 Recheck N Y Check X201 Clock 24MHz Replace X201 N Replace IC100 Flash Memory ...

Page 15: ...h R1127 Check IC101 Replace Main Scaler IC N N Check Panel clock P1002 10 11 22 23 Check IC101 Repair Main B D N Check Panel power P1002 1 2 3 5V IC802 Output 5V Replace IC802 N Y Replace T con Board or module Check FFC Cable for damage or open conductors Replace Cable N Y Y Y Check LED Driver output P1101 P1103 1 2 5 6 Check LED Driver IC1100 Replace LED Driver IC N Y ...

Page 16: ...k RF Cable Y 1 Check Tuner TU2601 or 02 or 03 5 Power 3 3V 2 Check IC803 Output voltage 3 3V Replace IC803 Y N Check Tuner TU2601 or 02 or 03 I2C Signal SCL R2609 SDA R2610 Check IC101 N 1 Check Tuner TU2601 or 02 or 03 7 Power 1 8V 2 Check IC805 Output voltage 1 8V For TU2601 check 13 Power 1 23V and IC806 also Replace IC805 Replace IC806 Y N Check Tuner TU2601 or 02 or 03 I2C Signal SCL R2609 SD...

Page 17: ...k RF Cable Y 1 Check Tuner TU2601 or 02 or 03 5 Power 3 3V 2 Check IC803 Output voltage 3 3V Replace IC803 Y N Check Tuner TU2601 or 02 or 03 I2C Signal SCL R2609 SDA R2610 Check IC101 N 1 Check Tuner TU2601 or 02 or 03 7 Power 1 8V 2 Check IC805 Output voltage 1 8V For TU2601 check 13 Power 1 23V and IC806 also Replace IC805 Replace IC806 Y N Check Tuner TU2601 or 02 or 03 I2C Signal SCL R2609 SD...

Page 18: ...t Check input signal format Is it supported Check signal R239 R237 R241 C220 C218 C222 Replace R239 R237 R241 C220 C218 C222 Y N Check JK400 Replace JK400 or Check Device Y N Y IC101 has problem Y Check Component Cable Wave form of C220 Wave form of C218 Wave form of C222 Wave form of Comp Y Wave form of Comp Pb Wave form of Comp Pr ...

Page 19: ...s it supported Check Hsync Vsync R4024 R4025 Replace R4024 R4025 Check signal RGB R228 R230 R232 C204 C206 C208 N Check P400 Replace P400 or Check Device Y N Y Replace R228 R230 R232 C204 C206 C208 N IC101 has problem Y Check RGB Cable Wave form of R4025 Vsync Wave form of R4024 Hsync Wave form of R230 C206 Wave form of R228 C204 Wave form of R232 C208 Y Y ...

Page 20: ...service purposes 6 No Video HDMI Check input signal format Is it supported Y Check JK600 JK601 for proper connection or damage Replace connector Y N Y Check HDMI Cable for damage or open connector Check I2C Signal JK600 601 15 16 Re download EDID data Y N Check HDCP Key IC101 Replace Scaler IC101 N ...

Page 21: ... support the audio signal normally Check Speaker and its wire connection P700 and the resistance Check Signal from IC700 L702 L703 L704 L705 Y Replace IC700 N 1 Check C820 Voltage Level 19V 2 Check Audio Amp IC700 Power 3 3V Y Replace IC700 19V IC2602 3 3V Or Adapter N Y Check Signal from IC101 SDA SCL R703 R214 R707 R213 Y Replace IC101 N Replace connector or Speaker N ...

Page 22: ...I ADDR 0 7 PCM_DATA 0 7 PCM_A 0 7 CI_ADDR 0 14 REG CI_OE CI_IORD CI_IOWR PCM_A 0 14 FE_DE_SDA SCL SERIAL Flash CVBS Scart RGB TV L R Sound F_RB PF OE PF_CEO SPI_CK SPI_CI SPI_CS SPI_DO DDR2 Data 0 15 DDR2 Address 0 12 DDR2 Data 0 15 DDR2 Address 0 12 System EEPROM EEPROM SCL SDA Panel DMB LED Driver IC Digital amp NTP7500 SP L SP R WLED Status WLED_ENABLE OVP_SEL CH_SEL WLED_DIM_ADJ Audio_ Master_...

Page 23: ... 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 manufacturer IMPORTA...

Page 24: ... LVA1P AC25 LVA1N AB24 LVA2P AD25 LVA2N AC24 LVA3P AE23 LVA3N AC23 LVA4P AC22 LVA4N AD23 LVB0P V23 LVB0N U24 LVB1P V25 LVB1N V24 LVB2P W25 LVB2N W23 LVB3P AA23 LVB3N Y24 LVB4P AA25 LVB4N AA24 LVACKP AE24 LVACKN AD24 LVBCKP Y23 LVBCKN W24 GPIO196 T25 GPIO193 U23 GPIO194 T24 GPIO195 T23 IC101 LGE2111A T8 EU BRA AUS PCMDATA 0 GPIO126 W21 PCMDATA 1 GPIO127 AA18 PCMDATA 2 GPIO128 AB22 PCMDATA 3 GPIO120...

Page 25: ...9 AVDD_AU33 V7 AVDD_EAR33 W7 VDDP_1 R19 VDDP_2 T19 AVDD_LPLL_1 W18 AVDD_LPLL_2 W19 VDDP_NAND V19 AVDD_DDR0_D_1 J17 AVDD_DDR0_D_2 K15 AVDD_DDR0_D_3 K16 AVDD_DDR0_C L15 AVDD_DDR1_D_1 K17 AVDD_DDR1_D_2 L17 AVDD_DDR1_D_3 M17 AVDD_DDR1_C L16 GND_EFUSE E9 GND_1 A23 GND_2 B17 GND_3 C23 GND_4 A5 GND_5 C11 GND_6 C19 GND_7 C22 GND_8 D14 GND_9 D18 GND_10 D19 GND_11 E17 GND_12 E18 GND_13 E19 GND_14 E22 GND_15...

Page 26: ...RS232C apply 3 E_SPRING 6 T_TERMINAL 7 B_TERMINAL 5 T_SPRING 4 R_SPRING 8 G_SPRING COMP_DET C401 18pF 50V OPT C408 1000pF 50V OPT JK401 KJA PH 1 0177 3 M3_DETECT 4 M4 5 M5_GND 1 M1 6 M6 R413 10K IC400 AP2191DSG 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_1 7 OUT_2 8 NC 5V_GENERAL R421 0 R420 0 OPT JK400 PPJ234 05 5A GN O SPRING 6A GN E LUG 4A GN CONTACT 7B BL E LUG S 5B BL O SPRING 7C RD E LUG S 5C RD O ...

Page 27: ...SLOT CI_TS_DATA 1 PCM_5V_CTL CI_MDI 4 IC500 74LVC1G32GW CI_SLOT 3 GND 2 A 4 Y 1 B 5 VCC 3 3V_CI CI_CD1 PCM_A 11 PCM_A 5 R521 100 CI_SLOT CI_ADDR 3 PCM_A 3 5V_GENERAL IC502 TC74LCX244FT 0ITO742440D TOSHIBA CI_SLOT 3 2Y4 2 1A1 4 1A2 1 1OE 6 1A3 5 2Y3 7 2Y2 8 1A4 9 2Y1 10 GND 11 2A1 12 1Y4 13 2A2 14 1Y3 15 2A3 16 1Y2 17 2A4 18 1Y1 19 2OE 20 VCC P500 10067972 000LF CI_SLOT G1 G2 57 21 52 16 10 47 41 5...

Page 28: ...C601 SN324 EU 3 NON_INV_IN1 2 INV_IN1 4 VCC 1 OUT1 6 INV_IN2 5 NON_INV_IN2 7 OUT2 8 OUT3 9 INV_IN3 10 NON_INV_IN3 11 GND 12 NON_INV_IN4 13 INV_IN4 14 OUT4 R646 62K EU C602 0 1uF 50V EU R640 100 EU R619 10K EU R651 10K EU C605 33pF EU R672 10K OPT EU_SCART mute R630 220K EU R618 10K EU R671 10K OPT EU_SCART mute R629 180 EU R628 75 EU C609 1000pF 50V EU C601 330pF EU R610 2 2K EU Q610 MMBT3904 NXP ...

Page 29: ...IODES OPT JP707 D704 100V 1N4148W_DIODES OPT AMP_SDA SB_MUTE JP706 R706 47K M52 H P JACK R733 10K M52 H P JACK R738 12K R736 470 3 3V_AVDD C712 47uF 25V C715 0 1uF 50V C714 0 1uF 50V C713 47uF 25V R734 220K R769 100 R767 100 R768 100 SE 1 2 R724 1K M52 BUZZER R715 10K M52 BUZZER R723 0 OPT R722 0 M52 BUZZER R721 100 M52 BUZZER BU700 PKM13EPY 4002 B0 M52 BUZZER 1 2 5V_GENERAL 1 2 R702 2K M52 BUZZER...

Page 30: ...22K R874 100 C836 10uF 10V IC800 MP1472GJ C452 Z 3 COMP 2 EN 4 FB 1 SS 5 GND 6 SW 7 IN 8 BST IC802 MP1472GJ C452 Z 3 COMP 2 EN 4 FB 1 SS 5 GND 6 SW 7 IN 8 BST IC806 MP1472GJ C452 Z 3 COMP 2 EN 4 FB 1 SS 5 GND 6 SW 7 IN 8 BST R855 2K 1 R848 560 1 R884 180K R885 180K R898 180K OPT R840 10K R843 1K R839 4 7K Q802 MMBT3904 NXP E B C 5V_GENERAL PANEL_CTL C882 1uF 25V C879 4 7uF 10V OPT 4 7uF R842 22K 5...

Page 31: ...R1000 1K Q1001 MMBT3904 NXP E B C 3 3V_ST LVA_2P LVB_1M C1001 0 1uF 50V LVB_0M KEY_SDA R1001 10K R1028 3 3K JP1001 JP1005 R1018 10K Q1002 MMBT3904 NXP IR_OUT E B C JP1002 R1033 0 OPT LVB_3M C1009 0 1uF 50V LVA_1P JP1006 JP1011 3 3V_ST IR_OUT JP1012 LVB_2M IR KEY1 R1027 100 LVA_0M JP1003 LVB_CKM LVB_0P 3 3V_ST JP1000 LVB_1P R1024 10K IR_OUT C1002 1000pF 50V C1013 1000pF 50V C1014 1000pF IR_OUT C100...

Page 32: ... JP1102 JP1101 JP1100 VOUT R1136 0 R1135 1 5K 1 P1101 12507WR 06L 1 2 3 4 5 6 7 P1103 12507WR 06L 1 2 3 4 5 6 7 R1127 100 R1121 100 C1111 100pF 50V C1116 100pF 50V D1103 100V BR210 C1118 47uF 25V Q1103 AOD478 S D G C1124 33uF 100V C1127 1uF 100V C1128 1uF 100V C1129 1uF 100V OPT C1130 1uF 100V OPT R1138 510K 1 8W 1 9 11 LED DRIVER 11 10 27 Parallel 0ohm DEL 11 11 15 1K 100ohm 1000pF 100pF 11 11 15...

Page 33: ... VSSQ_7 F9 VSSQ_8 G1 VSSQ_9 G9 R1239 0 1 10W 5 IC101 LGE2111A T8 EU BRA AUS A_DDR3_A 0 A11 A_DDR3_A 1 C14 A_DDR3_A 2 B11 A_DDR3_A 3 F12 A_DDR3_A 4 C15 A_DDR3_A 5 E12 A_DDR3_A 6 A14 A_DDR3_A 7 D11 A_DDR3_A 8 B14 A_DDR3_A 9 D12 A_DDR3_A 10 C16 A_DDR3_A 11 C13 A_DDR3_A 12 A15 A_DDR3_A 13 E11 A_DDR3_A 14 B13 A_DDR3_BA 0 F13 A_DDR3_BA 1 B15 A_DDR3_BA 2 E13 A_DDR3_MCLK C17 A_DDR3_MCLKZ A17 A_DDR3_MCLKE ...

Page 34: ...ALID 19 MCLK 20 D0 21 D1 22 D2 23 D3 24 D4 25 D5 26 D7 27 D8 28 SHIELD C2611 22uF 10V TU2601 2 TDSN G301D DVB T2 Europe 1 NC_1 2 RESET 3 SCL 4 SDA 5 B1 3 3V 6 SIF 7 B2 1 8V 8 CVBS 9 NC_2 10 NC_3 11 NC_4 12 B3 3 3V 13 B4 1 23V 14 NC_5 15 GND 16 ERROR 17 SYNC 18 VALID 19 MCLK 20 D0 21 D1 22 D2 23 D3 24 D4 25 D5 26 D6 27 D7 28 SHIELD R2635 0 NON_A_DEMODE R2634 0 NON_A_DEMODE R2636 2K NON_A_DEMODE C26...

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