Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LJ22E MODEL : 42LM6400 42LM6400-SA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67402918 (1204-REV00) Printed in Korea...
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MID_MAIN_1 2011.12.13 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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MID_MAIN_2 2011.12.19 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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MID_MAIN_3 2011.12.09 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. DDR ONE SIDE Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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2011.11.25 MID_POWER ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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2011.12.12 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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HDMI 4 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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JACK HIGH / MID 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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JACK_COMMON 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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JACK_COMMON 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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IR / KEY 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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USB3_HUB_WiFi 2011.10.26 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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MOTION REMOTE 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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LAN_VERTICAL 2011.12.09 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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2011.11.21 AMP_NEO ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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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. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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TUNER 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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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. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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LVDS_HIGH_MID 2011.08.11 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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LOCAL DIMMING 2011.12.13 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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2011.12.01 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. T-Con Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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11.09.29 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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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. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GCSC System for these model. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Defected Type caused by T-Con/ Inverter/ Exchange LED driver Board (PSU) A-3/5 Other : PSU Module Exchange Module itself (1) A-4/5 Exchange Module itself (2) A-5/5 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Power Board No Video/ replace voltage? No audio ( 3.5V,12V,20V or MAIN B/D 24V…) Replace Power Board and repair parts Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Check Normal Contact with signal distributor Tuner soldering Picture? or broadcaster (Cable or Air) Normal Picture? Replace Main B/D Close Close Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Change satellite setting signal distributor Normal (match with installed ANT) or broadcaster Picture? (Cable or Air) Normal Picture? Close Close Close Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Request repair for external device/cable RGB/ Check external External device HDMI/DVI device and /Cable Replace Main B/D error cable normal Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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(Check normal operation of normal? Main B/D HDMI/ External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Measure voltage of each output of Power B/D Normal? ※ Normal Replace Main B/D voltage? Close Normal Check ST-BY 3.5V voltage? ☞A18 Replace Power B/D Replace Power Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Power off by unknown status except listed case "POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble Abnormal "POWEROFF_CPUABNORMAL" Power off by CPU Abnormal Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
Screen normal voltage Speaker off Cancel OFF Replace Power Board and repair parts Check Speaker Disconnection Replace MAIN Board disconnection Replace Speaker Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Input signal error) Connect and check Normal Check and fix other external device audio? external device Check and fix external device Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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(Power B/D don’t have problem) If R/C operate, Normal Close Explain the customer operating? cause is interference from light in room. Replace R/C Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
- S/W Version RGB,HDMI/ Check and fix DVI, Optical Replace Main B/D Fix in external device/cable Recognition error accordance with technical information Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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“Part related to nose” in the Owner’s Manual. as shown in the solution manual (For models without any fix information, provide the description) Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Replace module Adjust VCOM exterior damage damage ☞A28 Cabinet Replace cabinet damage Remote controller Replace remote controller damage Stand Replace stand dent Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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D. Function error_ No response in remote Remote controller operation checking method controller, key error D. VCOM Adjustment Sequence of the Vcom adjustment Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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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. enter the value after replacing the MAIN BOARD. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Inverter On/off Lamp : A-Dim LED : N.C PWM Dim #1 GND/P_DIM2 Error-out • Lamp SCANNING Model : PWM Dim #2 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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MENU - Set up support - signal test select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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<ALL MODELS> 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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LCD TV connection diagram (1) date <ALL MODELS> As the part connecting to the external input, check the screen condition by signal Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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1. Check the signal strength or check whether the screen is normal when the external device is connected. 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
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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!) Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Check front display LED date Front LED control : Menu Option Power Indicator Standby light ON ST-BY condition: Red Power ON condition: white Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Inverter On/off Lamp : A-Dim LED : N.C PWM Dim #1 GND/P_DIM2 Error-out • Lamp SCANNING Model : PWM Dim #2 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Inverter On/off Lamp : A-Dim LED : N.C PWM Dim #1 GND/P_DIM2 Error-out • Lamp SCANNING Model : PWM Dim #2 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
1. Press the MENU button on the remote controller 2. Select the AUDIO function of the Menu 3. Select TV Speaker from Off to On Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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③ Connect the tester RX1 to the speaker terminal and if you hear the “Chik Chik” sound when you touch the GND and output terminal, the speaker is normal. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
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When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog Tester needle moves slowly, and defective when it does not move at all. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
■ Push the OK key to store the value. Then the message “Saving OK” is pop. ■ Press the exit key to finish V-COM adjustment. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes...
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Sub Micom OPTIC SPDIF OUT Remote Control (RENESAS) Ethernet UART * LVDS LS5700/LM6200 Series * EPI Above LM6400 Series RS-232C only Dev Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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VGH_ODD, VGH_EVEN GST_SOC [TCON5] IC7701 VGH_R, VGH_F, VST MCLK_SOC MCLK (47옴) TPS65198 [TCON4] CLK1~6_I CLK1~6 GCLK_SOC GCLK [TCON3] (0옴) 50Pin EPI RIGHT Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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Main SoC [OPCTRL11] I2C_SDA2 GMA[4][5][7][12][15] IC7700 I2C_SCL2 [OPCTRL10] TPS65178 EPI_LOCK6_SOURCE EPI_LOCK6 VCOMRFB TXA0N/P, TXB1N/P, TXB2N/P CH4/5/6 VCC18 Vcore H_VDD 50Pin EPI RIGHT Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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10-bit (R) Output • LVDS_SEL : “H”=JEIDA, “L” or NC=VESA (LGD) • BIT_SEL : “H” or NC = 10-bit, “L” = 8-bit Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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(P705) PC_L/R_IN PC-AUDIO RXA0+/-~RXA4+/-, RXACK+/- (JK1102) RXB0+/-~RXB4+/-, RXBCK+/- SPDIF_OUT SPDIF(Optic) (JK1103) COMP2_Y+/Pb+/Pr+, AV_CVBS_IN COMP2_L/R_IN Component1 Component2 & AV COMP1_Y+/Pb+/Pr+ (JK1601) SC1/COMP1_L/R_IN Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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DDC_SCL/SDA_2 (JK802) SENSOR_SCL/SDA, KEY1/2, LED_B, IR P2401 connector REAR (P703) (P705) RXA0+/-~RXA4+/-, RXACK+/- RXB0+/-~RXB4+/-, RXBCK+/- COMP1_Y+/Pb+/Pr+, AV_CVBS_IN Component1& AV COMP1_L/R_IN (JK1601) Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
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[OPCTRL7] RGB_DDC_SCL [OPCTRL9] [VGA_SCL] [VGA_SDA] RGB_DDC_SDA HDMI4 D0/D1/D2/CLK/SCL/SDA/HPD HDMI4 / PC DSUB_R+, DSUB_G+, DSUB_B+ [RP],[GP],[BP] DSUB_VSYNC, DSUB_HSYNC [VSYNC], [HSYNC] EPHY_TDP/TDN //RDP/RDN Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...