LG 42LB5800 Service Manual Download Page 19

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LGE Internal Use Only

Only for training and service purposes

BLOCK DIAGRAM

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Summary of Contents for 42LB5800

Page 1: ...ODEL 42LB5800 42LB5800 SB CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED 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: ...Copyright LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 12 BLOCK DIAGRAM 19 EXPLODED VIEW 20 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: ... as below without special notice 1 Temperature 25 ºC 5 ºC 77 9 ºF CST 40 ºC 5 ºC 2 Relative Humidity 65 10 3 Power Voltage Standard input voltage 100 240V 50 60Hz Standard Voltage of each products 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 pr...

Page 7: ...lution 1920 1080 60 wide Color Display Module Resolution 1920 1080 2 Aspect Ratio 16 9 All 3 LCD Module 32 TFT WUXGA LCD LC320DUE FGA4 32LB5800 SB 32 TFT WXGA LCD LC320DXE FGA4 32LB580B SA SB 39 TFT WUXGA LCD NC390DUN VXBP1 39LB5800 SB 42 TFT WUXGA LCD 47 TFT WUXGA LCD LC470DUE FGA4 47LB5800 SB 50 TFT WUXGA LCD 55 TFT WUXGA LCD 60 TFT WUXGA LCD 4 Operating Environment TFT 1 Temp 0 40 deg 2 Humidit...

Page 8: ...x 9 9 956 4 x 555 0 x 37 4 958 2 x 555 8 x 35 0 47 1059 5 x 609 5 x 9 7 1070 6 x 622 0 x 9 9 1068 0 x 617 8 x 38 8 1059 5 x 609 5 x 9 7 1067 6 x 617 4 x 36 5 60 1333 0 x 758 94 x 1 42 1346 8 x 774 4 x 29 9 Pixel Pitch Maker Inch H V D 32 170 25 x 510 75 363 75 x 363 75 510 75 x510 75 39 176 75 530 25 NC390DUN VXBP1 39LB5800 SB 444 75 x 444 75 42 483 3 x 483 3 483 3 x 483 3 483 3 x 483 3 483 3 x 48...

Page 9: ...76 15 625 50 13 5 SDTV 576I 6 720 576 31 25 50 13 5 SDTV 576P 7 1280 720 37 5 50 74 25 HDTV 720P 8 1280 720 45 00 60 00 74 25 HDTV 720P 9 1280 720 44 96 59 94 74 176 HDTV 720P 10 1929 1080 28 125 50 74 25 HDTV 1080I 11 1920 1080 33 75 60 00 74 25 HDTV 1080I 12 1920 1080 33 72 59 94 74 176 HDTV 1080I 13 1920 1080 56 25 50 148 5 HDTV 1080P 14 1920 1080 67 50 60 148 50 HDTV 1080P 15 1920 1080 67 432 ...

Page 10: ...Refer to adjust specification 5 2 1 DTV mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 480 15 73 59 94 13 500 SDTV DVD 480I 525I Spec out but display 2 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 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...

Page 11: ...ngle Frame Sequential 3 1920 1080 33 75 60 00 74 25 HDTV 1080I 2D to 3D Side by Side half Top Bottom 4 1920 1080 28 125 50 00 74 25 HDTV 1080I 2D to 3D Side by Side half Top Bottom 5 1920 1080 27 00 24 00 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom Checkerboard 6 1920 1080 28 12 25 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom Checkerboard 7 1920 1080 33 75 30 00 74 25 HDTV 108...

Page 12: ...pattern In this status you can maintain Heat Run useless any pattern generator Notice if you maintain one picture over 20 minutes Especially sharp distinction black with white pattern 13Ch or Cross hatch pattern 09Ch then it can appear image stick near black level 3 Adjustment items 3 1 PCB Assembly Adjustment MAC Address ESN Widevine Download EDID The Extended Display Identification Data DDC Disp...

Page 13: ...ion When OTP mode is failed ADC calibration should be OK by using External mode If you want re adjust for ADC Enter Service Mode by pushing ADJ key Enter Internal ADC mode by pushing key at 6 ADC Calibration Adjustment protocol Order Command Set response 1 Inter the Adjustment mode aa 00 00 a 00 OK00x 2 Change the Source xb 00 40 xb 00 60 b 00 OK40x Adjust 480i Comp1 Adjust 1080p Comp1 b 00 OK60x ...

Page 14: ...ance W B Equipment condition CA210 CH 9 Test signal Inner pattern 80IRE LAMP Module CH14 Test signal Inner pattern 80IRE LED Module CH18 Test signal Inner pattern 80IRE ALEF Module Above 5 minutes H run in the inner pattern power on key of adjust remote control The spec of color temperature and coordinate All Cool C50 13 000k K X 0 269 0 002 Y 0 273 0 002 Test signal Inner pattern for W B adjust E...

Page 15: ...ked Illumination is less than 10ux 2 Adhere closely the Color Analyzer CA210 to the module less than 10cm distance keep it with the surface of the Module and Color Analyzer s Prove vertically 80 100 3 Aging time After aging start keep the power on no suspension of power supply and heat run over 5 minutes Using no signal or full white pattern or the others check the back light on Auto adjustment Ma...

Page 16: ...value by decreasing the R 4 x target y target i First decrease B so make x a little more than the target ii Adjust x value by decreasing the G After You finish all adjustments Press In start button and compare Tool option and Area option value with its BOM if it is correctly same then unplug the AC cable If it is not same then correct it same with BOM and unplug AC cable For correct it to the mode...

Page 17: ...ection of country option is allowed only North American model Not allowed Korean model It is selection of Country about Rating and Time Zone Models All models which use LJ22E Chassis See the first page Press In Start button of Service Remocon then enter the Option Menu with PIP CH Button Select one of these three USA CANADA MEXICO defends on its market using Vol button 5 5 MHL Test Step 1 Turn on ...

Page 18: ...e next process Hi pot test Remove A V CORD from A V JACK BOX 5 HI POT test Auto If Test is failed Buzzer operates If Test is passed GOOD Lamp on and move to next process automatically 6 3 Check Point 1 Test voltage 3 Poles GND 1 5KV min at 100mA SIGNAL 3KV min at 100mA 2 TEST time 1 second 3 TEST POINT 3 Poles GND Test POWER CORD GND and SIGNAL CABLE GND Hi pot Test POWER CORD GND and LIVE NEUTRAL...

Page 19: ..._CVBS TUNER IR eyeQ LED Logo Lighting Control Key DDR3 Micron 2 Gb 1 DDR3 Micron 4 Gb 2 DDR3 Data Wake On LAN MICOM Audio AMP NTP7513 eMMC SAMSUNG 4GB USB 1 2 3 HDMI 1 2 3 AV Component H P Out SPDIF Ethernet LVDS Speaker R L EAR PHONE AMP TPA6138 HDCP EEPROM I2C 1 I2C 3 NVRAM I2C 5 I2C 6 I2C 0 I2C 1 DM DP Y Pb Pr CVBS X TAL 32 768MHz MHL SIL1292 I2C 2 MODULE AUDIO IN ...

Page 20: ...ristics 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 IMPORTANT SAFETY NOTICE 410 420 900 200 400 540 521 530 820 120 310 121 LV1 A...

Page 21: ...57 AH7 VCCK_58 AJ7 VCCK_59 AK7 VCCK_60 AL7 VCCK_61 AM7 VCCK_62 AN7 VCCK_63 L16 VCCK_64 V12 VCCK_65 U12 VCCK_66 T12 VCCK_67 AD13 VCCK_68 AD17 VCCK_69 AD14 VCCK_70 AB12 VCCK_71 AA12 VCCK_72 AC12 VCC3IO_C T9 VCC3IO_B_1 Y10 VCC3IO_B_2 AA10 VCC3IO_A_1 D22 VCC3IO_A_2 E22 DVSS_1 AC18 DVSS_2 AB21 DVSS_3 AB14 DVSS_4 N13 DVSS_5 P13 DVSS_6 R13 DVSS_7 T13 DVSS_8 U13 DVSS_9 V13 DVSS_10 W13 DVSS_11 Y13 DVSS_12 ...

Page 22: ...41K128M16JT 125 K IC701 3 DDR_256MB_MICRON A0 N3 A1 P7 A2 P3 A3 N2 A4 P8 A5 P2 A6 R8 A7 R2 A8 T8 A9 R3 A10 AP L7 A11 R7 A12 BC N7 A13 T3 NC_5 M7 BA0 M2 BA1 N8 BA2 M3 CK J7 CK K7 CKE K9 CS L2 ODT K1 RAS J3 CAS K3 WE L3 RESET T2 DQSL F3 DQSL G3 DQSU C7 DQSU B7 DML E7 DMU D3 DQ0 E3 DQ1 F7 DQ2 F2 DQ3 F8 DQ4 H3 DQ5 H8 DQ6 G2 DQ7 H7 DQ8 D7 DQ9 C3 DQ10 C8 DQ11 C2 DQ12 A7 DQ13 A2 DQ14 B8 DQ15 A3 VREFCA M8...

Page 23: ...TIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC SPDIF_OUT C3602 0 1uF 16V R3611 2 7K OPT JK3602 JST1223 001 1 GND 2 VCC 3 VINPUT 4 FIX_POLE 3 3V_NORMAL R3610 33 36 JACK HIGH MID 2011 11 21 SPDIF SPDIF OUT Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 24: ...F 10V WIFI R4133 10K OPT WIFI_DP WIFI_DM P4101 12507WR 08L NON_EYE_Q_8P 1 GND 2 KEY1 3 KEY2 4 3 5V_ST 5 GND 6 LOGO LED_R 7 IR 8 GND 9 L4100 BLM18PG121SN1D M_RFModule_RESET LOGO_LIGHT R4113 100 C4104 1000pF 50V R4118 10K 5 C4107 100pF 50V R4125 10K LED_R C4112 10uF 10V WIFI KEY2 IR C4120 0 1uF 16V LOGO_LIGHT KEY1 3 5V_ST_WAKE D4100 5 6V AMOTECH CO LTD OPT R4136 22 WIFI WOL WIFI_POWER_ON P4102 12507...

Page 25: ...R3806 10K D3803 5 6V AV_COMP_ESD SOC_TX ZD3804 ADUC 5S 02 0R5L OPT R3800 75 1 TU_DEBUG JK3800 PPJ245 01 NON_Mold_AV 6A GN C SPRING 7A GN E LUG 4A GN CONTACT 5B BL C SPRING 8C RD1 E LUG S 6C RD1 C SPRING 4C RD1 CONTACT 5D WH C SPRING 4E RD2 CONTACT 6E RD2 C SPRING 7E RD2 E LUG R3801 0 OPT R3811 1K R3812 1K JK3800 1 PPJ245N2 01 Mold_AV 6A GN YL O SPRING 7A GN YL E LUG 4A GN YL CONTACT 5B BL O SPRING...

Page 26: ...K SPK_L C5417 22000pF 50V 0 1uF C5401 50V I2C_SDA1 0 1uF C5419 50V C5435 0 47uF 50V SPK_L Q5400 MMBT3904 NXP AMP_MUTE_MICOM E B C C5429 390pF 50V C5404 1000pF 50V R5416 5 1K L5404 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH L5405 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH L5402 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH L5403 1 NRS6045T100MMGK Audio_Coil_TAIYO 10 0uH 1uF C5412 10V L5404 LPH6045T 100M ...

Page 27: ... R6103 33K HP_OUT_MTK C6102 1uF 10V HP_OUT R6105 4 7K HP_OUT C6103 1uF 10V HP_OUT HP_ROUT_MAIN L6100 120 ohm HP_OUT BLM18PG121SN1D C6104 180pF HP_OUT_MTK R6106 43K 1 HP_OUT C6107 0 1uF 16V HP_OUT C6109 180pF HP_OUT_MTK R6102 33K HP_OUT_MTK HP_ROUT_AMP C6104 1 18pF HP_OUT_H13 C6109 1 18pF HP_OUT_H13 C6108 10pF 50V HP_OUT C6106 10pF 50V HP_OUT IC6100 TPA6138A2 HP_OUT 3 OUTR 2 INR 4 GND_1 1 INR 6 VSS...

Page 28: ... USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC L DIM0_VS_PWR L DIM0_SCLK_PWR R7601 10K L DIM_OUT_8P P7600 12507WR 08L L DIM_OUT_8P 1 2 3 4 5 6 7 8 9 L DIM0_MOSI_PWR R7602 33 L DIM_OUT_8P R7603 33 L DIM_OUT_8P I2C_SCL1 I2C_SDA1 76 LOCAL DIMMING 2011 12 13 To LED DRIVER LOCAL DIMMING Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 29: ...116 P7 NC_119 P10 RESET K5 VCCQ_1 C6 VCCQ_2 M4 VCCQ_3 N4 VCCQ_4 P3 VCCQ_5 P5 VCC_1 E6 VCC_2 F5 VCC_3 J10 VCC_4 K9 VDDI C2 VSS_1 E7 VSS_2 G5 VSS_3 H10 VSS_4 K8 VSSQ_1 C4 VSSQ_2 N2 VSSQ_3 N5 VSSQ_4 P4 VSSQ_5 P6 NC_1 A1 NC_2 A2 NC_5 A8 NC_6 A9 NC_7 A10 NC_8 A11 NC_9 A12 NC_10 A13 NC_11 A14 NC_12 B1 NC_13 B7 NC_14 B8 NC_15 B9 NC_16 B10 NC_17 B11 NC_18 B12 NC_19 B13 NC_20 B14 NC_21 C1 NC_22 C3 NC_24 C7...

Page 30: ...IRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 24V_AMP C5450 10uF 35V OPT Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 31: ...100V 1N4148W OTP_WRITE R180 4 7K 3 3V_NORMAL OTP_WRITE VDD3V3 R194 10K R195 10K Q100 PMV48XP G D S C115 1 2 7pF 50V EAX6561020X_2 7pF C114 1 2 7pF 50V EAX6561020X_2 7pF SIL_RESET R153 1 1 5K TU_Q_KR R152 1 1 5K TU_Q_KR C114 1 0pF 50V EAX6561090X_1pF C115 1 0pF 50V EAX6561090X_1pF X100 27MHz 4 GND_2 1 X TAL_1 2 GND_1 3 X TAL_2 RST_HUB RST_HUB CAM_SLIDE_DET CAM_SLIDE_DET R196 240 IC105 LGE2122 A2_M1...

Page 32: ...P327 R372 0 R352 1 2K HP_OUT TP351 SC_R_SOC C371 0 01uF COMP1_Y AV1_CVBS_SOC HDMI_HPD_3_JACK PCM_RST TP339 TXA4N CI_CD2 TU_RESET2 TXC4N MT5398_TS_IN 0 TP314 COMP1_Pr TP341 TP302 D2 _HDMI1_SOC TP381 MT5398_TS_SYNC TP350 C339 560pF 50V OPT D0 _HDMI3_JACK OSCL2 COMP1 AV1 DVI_R_IN_SOC VDD3V3_HDMI C345 10uF 16V C346 10uF 16V R380 1K TU_S N Q_T US KR TW DDC_SDA_MHL 5VBUS HDMI_HPD_4_MHL DDC_SCL_MHL D0 _H...

Page 33: ... 7 COMP 9 SS TR 10 PH_1 11 PH_2 12 PH_3 13 BOOT 14 PWRGD 15 EN 16 VIN_3 5 AGND 8 RT CLK 6 VSENSE 4 GND_2 2 VIN_2 17 EP GND C2417 10uF 35V IC2404 RT8289GSP 3 NC_2 2 NC_1 4 FB 1 BOOT 5 EN 6 GND 7 VIN 8 SW 9 EP GND IC2400 BD86106EFJ 3 AGND 2 VIN 4 FB 1 PGND 5 COMP 6 EN 7 SW_1 8 SW_2 9 EP C2405 0 0068uF 50V ZD2400 5V ZENER_3 3V_NORMAL JP2408 JP2409 JP2410 JP2411 L2410 2uH NR8040T2R0N IC2405 TPS54327DD...

Page 34: ...21 10 P71 KR1 SI21 SDA21 11 P70 KR0 SCK21 SCL21 12 P30 INTP3 RTC1HZ SCK11 SCL11 13 P50 INTP1 SI11 SDA11 14 P51 INTP2 SO11 15 P17 TI02 TO02 16 P16 TI01 TO01 INTP5 17 P15 PCLBUZ1 SCK20 SCL20 18 P14 RXD2 SI20 SDA20 19 P13 TXD2 SO20 20 P12 SO00 TXD0 TOOLTXD 21 P11 SI00 RXD0 TOOLRXD SDA00 22 P10 SCK00 SCL00 23 P146 24 P147 ANI18 25 P27 ANI7 26 P26 ANI6 27 P25 ANI5 28 P24 ANI4 29 P23 ANI3 30 P22 ANI2 31...

Page 35: ...D Q3309 PMV48XP G D S MHL_DET Q3311 MMBT3904 NXP E B C R3307 1 8K DDC_SDA_MHL R3379 22K 5V_MHL DDC_SCL_MHL R3380 1 8K R3381 22K D3314 MMBD6100 A2 C A1 C3302 0 1uF 16V JK3300 51U019S 312HFN E R B LG EAG62611204 FREEPORT 14 NC 13 CE_REMOTE 5 D1_GND 20 BODY_SHIELD 12 CK 11 CK_GND 2 D2_GND 19 HP_DET 18 5V 10 CK 4 D1 1 D2 17 GND 9 D0 8 D0_GND 3 D2 16 DDC_DATA 7 D0 6 D1 15 DDC_CLK JK3303 51U019S 312HFN ...

Page 36: ... 3 E_SPRING R3705 1K ZD3703 20V ADUC 20S 02 010L OPT R3720 100 RS232C_US R3721 100 RS232C_US C3710 0 1uF RS232C_US C3713 0 1uF RS232C_US C3709 0 1uF RS232C_US 3 5V_ST SOC_TX ZD3702 ADUC 20S 02 010L 20V OPT C3708 0 1uF RS232C_US IC3700 MAX3232CDR EAN41348201 RS232C_US 3 C1 2 V 4 C2 1 C1 6 V 5 C2 7 DOUT2 8 RIN2 9 ROUT2 10 DIN2 11 DIN1 12 ROUT1 13 RIN1 14 DOUT1 15 GND 16 VCC C3711 0 1uF RS232C_US SOC...

Page 37: ...2 7 OUT1 8 FLT1 9 EP GND IC4306 1 DIODES TAIWAN INC USB2 3_OCP_DIODES 3 EN1 2 IN 4 EN2 1 GND 5 FLG2 6 OUT2 7 OUT1 8 FLG1 9 EP GND R4303 2 2 USB_Serial_2 2ohm R4304 2 2 USB_Serial_2 2ohm R4305 2 2 USB_Serial_2 2ohm R4306 2 2 USB_Serial_2 2ohm C4500 0 1uF 16V R4500 10K OPT 5V_USB_1 R4501 10K IC4500 AP2171DM8G 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_1 7 OUT_2 8 NC JK4500 3AU04S 305 ZC LG 1 2 3 4 5 USB_O...

Page 38: ... OF THE SCHEMETIC D5001 5 5V LAN_ESD EPHY_TDN D5003 5 5V LAN_ESD D5000 5 5V LAN_ESD D5002 5 5V LAN_ESD EPHY_TDP EPHY_RDN EPHY_RDP C5000 0 1uF 16V C5001 0 01uF 50V JK5000 RJ45VT 01SN002 METAL_LAN_JACK 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 JK5000 1 RV3 2032ADA3 MOLD_LAN_JACK 1 TD 2 TCT 3 TD 4 RD 5 RCT 6 RD 7 R7 8 GND 550 LAN_VERTICAL 2013 11 26 Ethernet Block Copyright ⓒ 2014 LG Electronics Inc All ri...

Page 39: ...1 TU6402 TDJM H101F DEV_TU_KR_PIP 1 B1 3 3V 2 NC_1 3 M_DIF_AGC 4 SCL_RF 5 SDA_RF 6 M_DIF P 7 M_DIF N 8 S_SIF 9 S_CVBS 10 NC_2 11 B2 3 3V 12 S_ERROR 13 GND_1 14 S_MCLK 15 S_SYNC 16 S_VALID 17 S_DATA 18 NC_3 19 NC_4 20 NC_5 21 NC_6 22 NC_7 23 NC_8 24 NC_9 25 S_RESET_DEMOD 26 B3 3 3V 27 SCL_DEMOD 28 B4 1 1V 29 NC_10 30 SDA_DEMOD 47 SHIELD B1 B1 A1 A1 TU6402 2 TDJM K101F DEV_TU_CO_T2 1 B1 3 3V 2 RF_SW...

Page 40: ... B C I2C_SCL4_TU FE_DEMOD1_TS_ERROR RF_SWITCH_CTL_TU 3 3V_TU FE_DEMOD2_TS_VAL 5V_NORMAL R6518 10K TU_DEMOD_CORE IC6500 AP2132MP 2 5TRG1 EAN61387601 TU_DEMOD_CORE 3 VIN 2 EN 4 VCTRL 1 PG 5 NC 6 VOUT 7 ADJ 8 GND 9 EP C6515 1uF TU_DEMOD_CORE R6520 10K 1 TU_1 2V 3 3V_TUNER 0 1uF C6516 TU_DEMOD_CORE R6519 1 14K TU_1 1V Demod_Core R6521 20K 1 TU_1 2V C6518 10uF 16V TU_DEMOD_CORE R6520 1 2K TU_1 1V R6521...

Page 41: ...8SG121TN1D LVDS_51PIN PANEL_VCC TXD2P TXA2P TXD3N TXD4N I2C_SCL1 TXA4N TXB0N TXACLKP TXD1P P7100 FI RE51S HF J R1500 LVDS_51PIN 1 NC 2 NC 3 NC 4 NC 5 NC 6 AUO_65_MIRROR 7 LVDS_SEL 8 NC 9 NC 10 L DIM_ENABLE 11 GND 12 RA0N 13 RA0P 14 RA1N 15 RA1P 16 RA2N 17 RA2P 18 GND 19 RACLKN 20 RACLKP 21 GND 22 RA3N 23 RA3P 24 RA4N 25 RA4P 26 GND 27 BIT_SEL 28 RB0N 29 RB0P 30 RB1N 31 RB1P 32 RB2N 33 RB2P 34 GND ...

Page 42: ......

Page 43: ... off while viewing power auto on off 7 g p 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error Remote control Local switch checking 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 Fi t f ll Ch k h th th i SVC B ll ti i GCSC S t f th d l 13 F Exterior error Exterior defect 13 14 APPENDIX Power Off History 1 97 F...

Page 44: ...n 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 residual image light spot A11 A11 32 AUO 15 Adjustment Test pattern ADJ Key A12 16 Exchange T Con Board 1 A 1 5 17 Exchange T Con...

Page 45: ...ye On Y Check Power Board 12V 3 5V etc Normal voltage Y Replace T con Board or module And Adjust VCOM A4 A1 p N Move to No video No audio N N j Repair Power Board or parts Check Power Board 24V output A2 A28 Normal voltage Y Replace Inverter or module N Repair Power End Repair Power Board or parts Always check record S W Version and White Balance value before replacing the Main Board Replace Main ...

Page 46: ... 2 13 LCD TV Error symptom 2014 1 2 C A4 Normal voltage Check various voltages of Power Board 3 5V 12V or 24V No Video No audio Check and replace MAIN B D Y N End Replace Power Board and repair parts 4 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ... Normal Signal Check whether other equipments have problem or not By connecting RF Cable at other equipment DVD Player Set Top Box Different maker TV etc N N Check RF Cable Connection 1 Reconnection 2 Install Booster Check S W Version SVC Bulletin Y Normal Picture Y A7 S W Upgrade Check Tuner soldering Normal Y N Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y N Repl...

Page 48: ...module Color error A10 A11 N contact condition N Check error color input mode HDMI DVI N End Y External device Cable normal External Input Component AV error Check external device and cable Replace Main B D N Check Test pattern A12 N N Request repair for external device cable Y External device Cable normal HDMI DVI error Check external device and cable Replace Main B D 6 97 Copyright ⓒ 2014 LG Ele...

Page 49: ...pattern For other panel External device screen error Color error External Input error Connect other external device and cable N R l Screen Check screen condition by input External Input Component Check S W Version N Check version error and cable Check normal operation of External Input Component AV and HDMI DVI by connecting Jig pattern Generator Set top Box etc Y Replace Main B D Screen normal AV...

Page 50: ...er LED Replace Power B D Y OK A17 A19 Stand By Red or Logo Light ON Operating off Check Power cord was inserted properly Measure voltage of each output of Power B D Replace Main B D N Normal A4 Y Normal voltage Replace Main B D Y Ch k ST BY 3 5V Normal Y Close N Check ST BY 3 5V Replace Power B D N Y Normal voltage A18 Replace Power B D 8 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved O...

Page 51: ...bnormal Replace Power B D N Y Normal End Abnormal 1 Fix A C cord Outlet and check each 3 phase out p If Power Off mode is not displayed Check Power B D Y Replace Main B D Normal voltage A19 1 Caution Check and fix exterior of Power B D Part voltage N g Replace Power B D Please refer to the all cases which can be displayed on power off mode Click the below Hyper_link 9 97 Copyright ⓒ 2014 LG Electr...

Page 52: ... menu TV Speaker Y Check audio B 24V of Power Board Normal voltage Y A24 A25 Screen normal Sound Out Speaker N Change the TV Speaker voltage N Replace Power Board and repair parts Check Speaker disconnection N Replace MAIN Board End Disconnection Y Replace Speaker Cable 10 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ...ion Noise only for D TV W k d di N Normal voltage RF External Input signal Signal normal Replace Main B D N Wrecked audio Discontinuation Noise only for Analog Replace Power B D When RF signal is not received R t i t t l R l M i B D End Wrecked audio Discontinuation Noise only for External Input Connect and check other external device N Normal audio Request repair to external cable ANT provider Re...

Page 54: ... Check B 3 5V On Main B D A27 Normal Voltage N Check IR Output signal Normal Signal N Y N A27 Y A27 Y Check R C Operating When turn off light in room Check Replace Baterry of R C Close Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 N Repair Replace IR B D N Normal operating Close Replace R C If R C operate Explain the customer cause is interference fr...

Page 55: ...Input and C t Replace Main B D Fix information S W Version Y information input signal g input N Component Recognition error Check and fix HDMI DVI Optical Replace Main B D Replace Main B D Fix in external device cable DVI Optical Recognition error Replace Main B D Fix in accordance with technical information 13 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service...

Page 56: ...e S W or Mechanical noise is a natural provide the description If there is a Tak Tak noise from the cabinet refer to the KMS fix information and then proceed as shown in the solution manual For models without any fix information provide 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...

Page 57: ...rror symptom 2014 1 2 Replace module Zoom part with exterior damage Module damage Cabinet Adjust VCOM A28 Cabinet damage Replace cabinet Replace remote controller Remote controller damage damage Stand dent Replace stand 15 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ... when on off while viewing POWER BOARD PIN voltage checking method A19 viewing 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 there is no audio 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 r...

Page 59: ...GAIN Cut value of Color Temp Cool Medium Warm re 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 17 97 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 3 After recording the R G B GAIN Cut value o...

Page 60: ... 3 3 5V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 9 24V 10 24V 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 17 GND 18 GND 17 GND 18 GND 19 GND 20 GND 21 GND 22 L DIMO_VS 23 L DIMO_MOSI 24 L DIMO SCLK The Wafer 18Pin and 24Pin is used by operating LocalDimming or not LocalDimming 24Pin wafer is applied operating L D at power and main B D 18Pin wafer is applied not operating L D at powe...

Page 61: ... method A Video error_Video error video lag stop ALL MODELS A6 date Revised date symptom Content LCD TV 2014 1 2 MENU Æ Settings Æ support Æ signal test Æ select channel When the signal is strong use the attenuator 10dB 15dB 20dB etc 19 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...A Video error_Video error video lag stop 1 Checking method for remote controller for adjustment ALL MODELS A7 date Revised date Content LCD TV 2014 1 6 symptom Version Press the IN START with the remote controller for adjustment 20 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 63: ...D TV connection diagram 1 image light spot A8 date Revised date symptom Content LCD TV ALL MODELS 2014 1 2 As the part connecting to the external input h k th diti b i l 21 97 check the screen condition by signal Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...ptom Content LCD TV 2014 1 6 Checking method 1 Check the signal strength or check whether the screen is normal when the external device is connected 22 97 g g 2 After measuring each voltage from power supply finally replace the MAIN BOARD with Main to Power Cable Speaker Cable and LVDS or EPI Cable Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE In...

Page 65: ...LCD TV 2014 1 2 You can view 6 types of patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 23 97 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 ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Onl...

Page 66: ... A17 date Revised date symptom Content LCD TV 2014 1 2 Front LED control Front LED control Menu Æ Option Æ LG Logo Light Æ Brightness and Duration ST BY condition Red or Logo Light ON g g Power ON condition OFF or User Settings 24 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ...ard 공통 FREE LGP 14PL1 IT 1 PWR ON OFF 2 INV ON Edge LED 3 3 5V 4 PDIM 1 5 3 5V 6 GND 7 GND 8 PDIM 2 9 24V 10 24V 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 17 GND 18 GND 17 GND 18 GND 19 GND 20 GND 21 GND 22 L DIMO_VS 23 L DIMO_MOSI 24 L DIMO_SCLK The Wafer 18Pin and 24Pin is used by operating LocalDimming or not LocalDimming 24Pin wafer is applied operating L D at power and mai...

Page 68: ... 3 3 5V 4 PDIM 1 5 3 5V 6 GND 7 GND 8 PDIM 2 9 24V 10 24V 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 17 GND 18 GND 17 GND 18 GND 19 GND 20 GND 21 GND 22 L DIMO_VS 23 L DIMO_MOSI 24 L DIMO_SCLK The Wafer 18Pin and 24Pin is used by operating LocalDimming or not LocalDimming 24Pin wafer is applied operating L D at power and main B D 18Pin wafer is applied not operating L D at power...

Page 69: ...r error _Off when on off whiling viewing ALL MODELS A22 date Revised date symptom Content LCD TV 2014 1 6 Entry method Entry method 1 Press the IN START button of the remote controller for adjustment 27 97 2 Check the entry into adjustment item 3 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 70: ... error_No audio Normal video ALL MODELS A24 date Revised date symptom Content LCD TV 2014 1 2 Checking method Checking method 1 Press the MENU button on the remote controller 2 Select the SOUND function of the Menu 3 Select TV Speaker from Others 28 97 Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 71: ...24 L DIMO_SCLK The Wafer 18Pin and 24Pin is used by operating LocalDimming or not LocalDimming 24Pi f i li d i D d i B D Checking order when there is no audio 24Pin wafer is applied operating L D at power and main B D 18Pin wafer is applied not operating L D at power and main B D Check the contact condition of or 24V connector of Main Board Measure the 24V input voltage supplied from Power Board I...

Page 72: ...EY1 3 KEY2 4 3 5V_ST A Type B Type 5 GND 6 LOGO LED_R 7 IR 8 GND 9 N A C Type 9 N A 10 N A Checking order g 1 2 Check IR cable condition between IR Main board 3 Check the st by 3 5V on the terminal 6 4 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 30 97 Copyright ⓒ 2014 LG Electronics I...

Page 73: ...e adj key select V COM A hi th i ht th l ft b tt th t t ll A d fi d th V COM l Whi h i As pushing the right or the left button 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 finis...

Page 74: ...WER_OFF_BY_LOCAL_KEY POWER_OFF_BY_LOCAL KEY POWER_OFF_BY_OTA POWER_OFF_BY_End of OTA POWER_OFF_BY_SIGNAL_DETECT POWER_OFF_BY_Another MICOM Only OLED POWER_OFF_BY_RESET POWER_OFF_BY_Factory Reset POWER_OFF_BY_UNKNOWN POWER_OFF_BY_unknown status except listed case POWER_OFF_BY_ABN POWER_OFF_BY_abnormal Panel status POWER_OFF_BY_KEY_TIMEOUT POWER_OFF_BY_abnormal Power Off Key At Warm Hot status POWER...

Page 75: ... Broken T Con Defect CNT Broken T Con Defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section 33 97 Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...r Section Solder defect Short Crack Fuse Open Abnormal power section Abnormal Display Solder defect Short Crack Fuse Open Abnormal power section p y 34 97 GRADATION Noise GRADATION Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 77: ...e PSU LED driver No Light Dim Light Dim Light Dim Light Dim Light Dim Light 35 97 No picture Sound Ok Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...s damage Panel Mura Light leakage Crosstalk Crosstalk Press damage Un repairable Cases In this case please exchange the module 36 97 Press damage Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 79: ...te TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Un repairable Cases Horizontal Block In this case please exchange the module 37 97 Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Copyright ⓒ 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

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