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Checking method:
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.( with Main to Power Cable, Speaker Cable and LVDS or EPI Cable)

TUNER checking part

A. Video error_Video error, video lag/stop

<ALL MODELS>

A9

Established

date

Revised

date

Error

symptom

Content

Standard Repair Process Detail Technical Manual

Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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Содержание 50LF6090

Страница 1: ... 50LF6100 UA MODEL 50LF6090 50LF6090 UB 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 ...

Страница 2: ...ronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 8 BLOCK DIAGRAM 16 EXPLODED VIEW 17 SCHEMATIC CIRCUIT DIAGRAM APPENDIX ...

Страница 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...

Страница 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...

Страница 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...

Страница 6: ... The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety UL CSA IEC specification EMC FCC ICES IEC specification Wireless WirelessHD Specification Option 4 General Specification No Item Specification Remark 1 Market North America 2 Television System NTSC M ATSC 64 256 QAM 3 Input Voltage...

Страница 7: ...0 1080 67 50 60 148 50 HDTV 1080P 5 2 HDMI Input PC DTV No Resolution H freq kHz V freq kHz Pixel clock MHz Proposed PC DDC 1 640 350 31 468 70 09 25 17 EGA X 2 720 400 31 469 70 08 28 32 DOS O 3 640 480 31 469 59 94 25 17 VESA VGA O 4 800 600 37 879 60 31 40 00 VESA SVGA O 5 1024 768 48 363 60 00 65 00 VESA XGA O 6 1152 864 54 348 60 053 80 002 VESA O 7 1360 768 47 712 60 015 85 50 VESA WXGA X 8 ...

Страница 8: ...tes or longer especially where W B scale is strong Digital pattern 13ch and or Cross hatch pattern 09ch there can some afterimage in the black level area 3 Adjustment items 3 1 Final assembly adjustment 1 White Balance adjustment 2 RS 232C functionality check 3 Factory Option setting per destination 4 Shipment mode setting In Stop 5 GND and HI POT test 3 2 Appendix 1 Tool option menu USB Download ...

Страница 9: ...g and Play 4 4 2 Equipment Since embedded EDID data is used EDID download JIG HDMI cable and D sub cable are not need Adjust remocon 4 4 3 EDID DATA 4 4 3 1 2D_8bit_PCM US _ xvYCC off HD HDMI EDID 2D_8bit_PCM US _xvYCC off HD Reference HDMI1 HDMI3 In the data of EDID bellows may be different by S W or Input mode ⓐ Product ID HEX EDID Table DDC Function 0001 0100 Analog 0001 0100 Digital ⓑ Serial N...

Страница 10: ... E7 0C X HDMI3 E7 FC X ⓕ Vendor Specific HDMI INPUT MODEL NAME HEX HDMI1 67 03 0C 00 10 00 80 1E HDMI2 67 03 0C 00 20 00 80 1E HDMI3 67 03 0C 00 30 00 80 1E 4 4 3 3 2D_10bit_PCM US _ xvYCC off HDMI EDID 2D_10bit_PCM US _xvYCC off Reference HDMI1 HDMI3 In the data of EDID bellows may be different by S W or Input mode ⓐ Product ID HEX EDID Table DDC Function 0001 0100 Analog 0001 0100 Digital ⓑ Seri...

Страница 11: ...10 NCG CH 9 WCG CH12 LED CH14 2 Adj Computer During auto adj RS 232C protocol is needed 3 Adjust Remocon 4 Video Signal Generator MSPG 925F 720p 204 Gray Model 217 Pattern 49 Color Analyzer Matrix should be calibrated using CS 1000 5 1 3 Equipment connection 5 1 4 Adjustment Command Protocol 1 RS 232C Command used during auto adj RS 232C COMMAND Explanation CMD DATA ID Wb 00 00 Begin White Balance...

Страница 12: ...ium 0 286 0 289 9 300K 0 0000 Warm 0 313 0 329 6 500K 0 0000 Standard color coordinate and temperature using CA 210 CH 18 ALEF Mode Coordinate Temp uv X Y Cool 0 271 0 002 0 270 0 002 13 000K 0 0000 Medium 0 286 0 002 0 289 0 002 9 300K 0 0000 Warm 0 313 0 002 0 329 0 002 6 500K 0 0000 Standard color coordinate and temperature using CA 210 CH 14 Mode Coordinate Temp uv X Y Cool 0 271 0 002 0 270 0...

Страница 13: ...tery before test A recommendation is that a tester change battery every lots 5 3 2 Test 1 Make pairing with TV set by pressing Start key Wheel key on RCU 2 Check a cursor on screen by pressing Wheel key of RCU 3 Stop paring with TV set by pressing Back Home key of RCU 5 3 3 Applied models Chassis Model Name Magic RF receiver LA46H 50 55 60LF6100 UA 50 55 60LF6090 UB Dongle Dongle Model An USB dong...

Страница 14: ... RF input Mono 1KHz sine wave signal 100 Modulation 2 CVBS Component 1KHz sine wave signal 0 4Vrms 3 RGB PC 1KHz sine wave signal 0 7Vrms 6 2 Specification No Item Min Typ Max Unit Remark 1 Audio practical max Output L R Distor tion 10 max Output 9 0 8 5 10 0 8 9 12 0 9 9 W Vrms 1 Measurement condition EQ AVL Clear Voice Off 2 Speaker 8Ω Impedance 7 GND and HI POT Test 7 1 GND HI POT auto check pr...

Страница 15: ...nding area surrounding lighting should be lower 10 lux Try to isolate adj area into dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10cm and perpendicular of the module surface 80 100 3 Aging time i After Aging Start Keep the Power ON status during 5 Minutes ii In case of LCD Back light on should be checked using no signal or Full white pattern 9 1 2 Equipment 1 Colo...

Страница 16: ...C A LNB USB2 USB3 41P 51P eMMC 4GB Sub Micom RENESAS R5F1000G DDR3 1600 X 16 256MB X 1EA P_TS 50P 50P X_TAL 27MHz T C S2 Without ATV A B HDCP EEPROM 16Kb X_TAL 32 768KHz I2S Out I2C 1 EPI I2C 2 LVDS USB P_TS I2C 5 I2C 1 H P AV COMP Tuner I2C 6 DVB S I2C 4 OCP 2 5A OCP 1A HDD MHL 1A SIL1392 800MHz MHL I2C 4 MHL 斲殯柢 R E A R S I D E S I D E R E A R H AMP TI CVBS YPbPr SPDIF OUT ETHERNET I2C 3 LOCAL D...

Страница 17: ...acteristics 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 900 200 400 410 540 521 530 820 120 121 LV1 A2 A1...

Страница 18: ...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 ...

Страница 19: ...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...

Страница 20: ...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 ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 21: ...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...

Страница 22: ...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...

Страница 23: ...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 ...

Страница 24: ... 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...

Страница 25: ... 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 ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes ...

Страница 26: ...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...

Страница 27: ...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 ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 28: ...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...

Страница 29: ...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...

Страница 30: ... 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...

Страница 31: ...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...

Страница 32: ...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 ...

Страница 33: ... 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...

Страница 34: ...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...

Страница 35: ... 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 ⓒ 2015 LG Electronics Inc All ri...

Страница 36: ...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...

Страница 37: ... 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...

Страница 38: ...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 ...

Страница 39: ......

Страница 40: ...image light spot external device color error 5 6 B Power error No power 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 Remote control Local switch checking 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F Exterior error Exterior defect 13 14 APPENDI...

Страница 41: ...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 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 Exchange T C...

Страница 42: ... 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 Revised date 1 13 Error symptom A Video error No video Normal audio A4 A1 A2 A28 A7 A3 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speaker Cable IR B D Cable ETC ...

Страница 43: ...heck and replace MAIN B D Y Replace Power Board and repair parts N End A Video error No video No audio A4 Established date Revised date 2 13 Error symptom Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 44: ...n B D Check Tuner soldering Normal Picture Y N Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Settings 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 Normal Picture Y Close N A7 Established date Revised date 3 13 Error symptom Standard Repair Process A...

Страница 45: ...k external device and cable Y External device Cable normal 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 Established date Revised date 4 13 Error symptom Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right r...

Страница 46: ...eration of External Input Component AV and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen normal N Y Check S W Version Y N Check version S W Upgrade Y N Normal screen End Screen normal N Y Check external device connection condition Y N Check and replace Link Cable Normal Y N Screen normal Replace Main B D adjust VCOM Replace module Check color condition by inp...

Страница 47: ...e of each output of Power B D N Y Normal voltage Replace Main B D 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 Established date Revised date 6 13 Error symptom Stand By Red or Logo Light ON Operating off Close Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purp...

Страница 48: ...r N Y Check Power Off Mode Fix A C cord Outlet and check each 3 phase out Check A C cord Check for all 3 phase power out Check outlet Replace Main B D CPU Abnormal If Power Off mode is not displayed Check Power B D voltage Y N Replace Main B D Normal voltage Replace Power B D Replace Power B D N Y Normal End A22 A19 Abnormal 1 Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right r...

Страница 49: ... Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Cable Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 Error symptom Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 50: ...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...

Страница 51: ...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 Established date Revised date 10 13 Error symptom Standard Repair Pro...

Страница 52: ... fix external device cable 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 Error symptom Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 53: ...en proceed as shown in the solution manual For models without any fix information provide the description Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date 12 1...

Страница 54: ...remote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Adjust VCOM Established date Revised date 13 13 Error symptom A28 Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 55: ... when on off while 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...

Страница 56: ...BOARD Check White Balance value A Video error_No video Normal audio ALL MODELS A3 Established date Revised date Error symptom Content 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 Copyright ⓒ 2015 LG Electroni...

Страница 57: ...4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 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 and main B D Copyright ⓒ 2015 LG ...

Страница 58: ...tc TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A6 Established date Revised date Error symptom Content Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 59: ...er for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Content Error symptom Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 60: ...e part connecting to the external input check the screen condition by signal A8 Established date Revised date Error symptom Content ALL MODELS Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 61: ...ally replace the MAIN BOARD with Main to Power Cable Speaker Cable and LVDS or EPI Cable TUNER checking part A Video error_Video error video lag stop ALL MODELS A9 Established date Revised date Error symptom Content Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 62: ...efective 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 Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 63: ...t ST BY condition Red or Logo Light ON Power ON condition OFF or User Settings Front LED control Menu Option LG Logo Light Brightness and Duration Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 64: ... 14PL1 IT 1 PWR ON OFF 2 INV ON 3 3 5V 4 PDIM 1 5 3 5V 6 GND 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 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 p...

Страница 65: ...V 4 PDIM 1 5 3 5V 6 3 5V 7 GND 8 PDIM 2 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V or N C 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 and main B D Copyright ⓒ 2015 L...

Страница 66: ...ent item 3 POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A22 Established date Revised date Error symptom Content Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 67: ...ker from Others 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 Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 68: ...d Repair Process Detail Technical Manual Checking order when there is no audio Check the contact condition of or 24V connector of Main Board Measure the 24V input voltage supplied from Power Board If there is no input voltage remove and check the connector 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 no...

Страница 69: ...n ON condition it is normal when the Analog Tester needle moves slowly and defective when it does not move at all 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 Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for tr...

Страница 70: ...OM 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 Standard Repair Process Detail Technical Manual Copyright ⓒ 2015 LG Electronics Inc All right...

Страница 71: ...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 Abnormal 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_OFF_BY_ACDE...

Страница 72: ...oken 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 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 73: ...k Abnormal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION Abnormal Display Appendix Exchange T Con Board 2 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 74: ...Appendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 75: ...e Press damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage Un repairable Cases In this case please exchange the module Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 76: ... 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 Un repairable Cases In this case please exchange the module Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

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