LG 32LM580T-ZA Service Manual Download

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Printed in Korea

P/NO : MFL67360739 (1209-REV00)

CHASSIS : LD21B

MODEL : 32LS679C

32LS679C-ZC

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

Summary of Contents for 32LM580T-ZA

Page 1: ...EL 32LS679C 32LS679C ZC 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: ...ll rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 11 SCREW ASSEMBLY WORKING GUIDE 16 BLOCK DIAGRAM 17 EXPLODED VIEW 18 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: ... Germany France Spain Sweden Finland Nether lands Belgium Luxemburg Greece Denmark Czech Austria Hungary Swiss Croatia Turkey Norway Slovenia Poland Ukraine Portugal Ireland Morocco Latvia Estonia Lithania Rumania Bulgaria Russia Slovakia Bosnia Serbia Albania Kazakhstan Belarus DTV MPEG2 4 DVB T2 8 countries UK Denmark Sweden Finland Norway Ireland Ukraine Kazakhstan DTV MPEG2 4 DVB C 37 countrie...

Page 7: ...rt RF OUT analog 5 Video Input RCA 1EA PAL SECAM NTSC 4 System PAL SECAM NTSC PAL60 6 Component Input 1EA Y Cb Cr Y Pb Pr 7 RGB Input RGB PC Analog D SUB 15PIN Some models LD21A LD21C are not supported 8 HDMI Input 3EA HDMI1 DTV DVI HDMI2 DTV HDMI3 DTV PC HDMI version 1 3 Support HDCP The number of Input ports is different by model 9 Audio Input 2EA RGB DVI Audio Component AV In case of the RGB DV...

Page 8: ...0P 10 1920 1080 28 125 50 00 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 00 148 50 HDTV 1080P 14 1920 1080 67 50 60 00 148 50 HDTV 1080P 15 1920 1080 67 432 59 94 148 352 HDTV 1080P 16 1920 1080 27 00 24 00 74 25 HDTV 1080P 17 1920 1080 26 97 23 94 74 176 HDTV 1080P 18 1920 1080 33 75 30 00 74 25 HDTV 1080P 19 1920 108...

Page 9: ...0 020 108 0 VESA SXGA O FHD only 9 1920 1080 67 50 60 00 148 5 HDTV 1080P O FHD only DTV 1 720 480 31 47 59 94 27 00 SDTV 480P 2 720 480 31 50 60 00 27 027 SDTV 480P 3 720 576 31 250 50 00 27 00 SDTV 576P 4 1280 720 37 50 50 00 74 25 HDTV 720P 5 1280 720 45 00 60 00 74 25 HDTV 720P 6 1280 720 44 96 59 94 74 176 HDTV 720P 7 1920 1080 28 125 50 00 74 25 HDTV 1080I 8 1920 1080 33 75 60 00 74 25 HDTV ...

Page 10: ...fter downloading check OK message USB DOWNLOAD 1 Put the USB Stick to the USB socket 2 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 3 Show the message Copying files from memory 4 Updating is starting 5 Updating Completed The TV will restart automatically...

Page 11: ...t The use of a internal pattern 0 1 2 3 4 5 6 7 8 9 A B C D E F 00 00 FF FF FF FF FF FF 00 1E 6D a b 10 c 01 03 68 A0 5A 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80 30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30 50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A 60 3E 1E 53 10 00 0A 20 20 20 20 20 20 d 70 d 00...

Page 12: ...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 POWER ONLY or the others check the back light on Auto adjustment Map using RS 232C to USB cable RS 232C COMMAND CMD ID DATA Wb 00 00 White Balance Start Wb 00 ff White Balance End Caution Color Temperature COOL Medium ...

Page 13: ...sertion condition 5 2 HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GWS103 4 on 4 HI POT test Auto If Test is failed Buzzer operates If Test is passed GOOD Lamp on and move to next proc ess automatically 5 3 Checkpoint 1 Test voltage Touchable Metal 3KV min at 100mA SIGNAL 3KV min at 100mA 2 TEST time 1 second case ...

Page 14: ...the menu 6 Model Number D L like below photo 3 Input the Factory model name or Serial number like photo 4 Check the model name Instart menu Factory name displayed ex 32LV3400 ZG 5 Check the Diagnostics DTV country only Buyer model displayed ex 32LV3400 ZG 7 MAC Address CI key download 7 1 MAC Address 7 1 1 Equipment Condition Play file Serial exe MAC Address edit Input Start End MAC address 7 1 2 ...

Page 15: ... Mode of TV Setting automatic IP Setting state confirmation If automatic setting is finished you confirm IP and MAC Address 7 3 LAN PORT INSPECTION PING TEST Connect SET LAN port PC LAN Port 7 3 1 Equipment setting 1 Play the LAN Port Test PROGRAM 2 Input IP set up for an inspection to Test Program IP Number 12 12 2 2 7 3 2 LAN PORT inspection PING TEST 1 Play the LAN Port Test Program 2 Connect e...

Page 16: ...w is assembled at A Part If C Screw is used at the A part Module will get damaged SCREW ASSEMBLY WORKING GUIDE C A A A A A A A A A A A B C C C C C C C B B B A ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ͶͲ C C C A A A A A A A A A A A A A A A A A A A A A A B B C C C C C C C C C C C C C C B B B B B B A A ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ͶͲ C C D D D D D D D D D D D D ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ח ͶͲ ח ͷͲͳ ͽ ͳͼ ΒΡΥΚΥΖ ח ͶͲ ח ͷͲͳ ͽ ͳͼ ΒΡΥΚΥΖ ח ͶͲ ...

Page 17: ... FPC 51P I2S SPDIF CVBS Y Pb Pr L R RGB H V Rear TMDS DDR3 Add DDR3 Data SPI Side NAND FLASH IC102 2Gbit PCM_A 0 7 TMDS HDMI3 DDR3 1Gb IC1202 H5TQ1G63BFR DDR3 1Gb IC1201 H5TQ1G63BFR CONTROL IR LED SOFT TOUCH TACT SWITCH SENSOR _SCL SDA LED_R KEY1 KEY2 IR M24M01 HRMN6TP IC104 256Kbit I2C TMDS HDMI3 Except of LS350T CS460T F SCART SC1_CVBS_IN SC1_R G B FE_ VOUT CI Slot 74LCX244 Buffer TS_DATA 0 7 PC...

Page 18: ...trical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufactur...

Page 19: ...11 L6 PM_SPI_SCZ1 GPIO_PM 6 GPIO12 C2 GPIO_PM 7 GPIO13 L5 GPIO_PM 8 GPIO14 M6 GPIO_PM 9 GPIO15 M5 PM_SPI_SCZ2 GPIO_PM 10 GPIO16 C1 GPIO_PM 11 GPIO17 M4 PM_SPI_SCK GPIO1 A2 PM_SPI_CZ0 GPIO_PM 12 GPIO0 D3 PM_SPI_SDI GPIO2 B2 PM_SPI_SDO GPIO3 B1 TS0CLK GPIO87 Y14 TS0VALID GPIO85 AA10 TS0SYNC GPIO86 Y12 TS0DATA_ 0 GPIO77 Y13 TS0DATA_ 1 GPIO78 Y11 TS0DATA_ 2 GPIO79 AA12 TS0DATA_ 3 GPIO80 AB12 TS0DATA_ ...

Page 20: ...uF C253 1uF IC101 LGE2111A T8 S7LR2_DIVX_MS10 RXACKP J2 RXACKN J3 RXA0P K3 RXA0N J1 RXA1P K2 RXA1N K1 RXA2P L2 RXA2N L3 DDCDA_DA GPIO24 T5 DDCDA_CK GPIO23 T4 HOTPLUGA GPIO19 V5 HOTPLUGB GPIO20 R5 RXCCKP AE9 RXCCKN AC9 RXC0P AC10 RXC0N AD9 RXC1P AC11 RXC1N AD10 RXC2P AE11 RXC2N AD11 DDCDC_DA GPIO28 AE8 DDCDC_CK GPIO27 AD8 HOTPLUGC GPIO21 AC8 RXDCKP F2 RXDCKN F3 RXD0P G3 RXD0N F1 RXD1P G2 RXD1N G1 R...

Page 21: ... PD_ 24V_PWR_DET_DIODES 1 GND 3 VCC 2 RESET C436 0 01uF 50V 0 01uF C448 3300pF 50V C488 3300pF R403 1 5K 1 PD_ 24V R405 2 2K PANEL_DISCHARGE_RES_2 2K R407 2 2K PANEL_DISCHARGE_RES_2 2K R448 2 7K 1 PD_ 12V R450 0 5 PD_ 3 5V R473 1 R482 8 2K 1 PD_ 24V R405 1 3K PANEL_DISCHARGE_RES_3K R407 1 3K PANEL_DISCHARGE_RES_3K PWM1 R408 100 FOR 200HZ PWM_DIM2 R184 33 FOR LPB MODEL P407 12507WR 08L FOR LPB MODE...

Page 22: ... 50V C2401 0 1uF L2404 BLM18PG121SN1D 11_SUB L2401 BLM18PG121SN1D SENSOR_SDA P2402 12507WR 15L 11_SUB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 3 5V_ST C2402 0 1uF S T_SDA C2404 1000pF 50V R2405 10K 1 JP2407 P2401 12507WR 10L 12_SUB 1 2 3 4 5 6 7 8 9 10 11 JP2409 LED_B LG_LOGO JP2408 C907 18pF 50V OPT 3 3V_Normal C2403 0 1uF 16V IR_OUT C2405 0 1uF 16V 11_SUB KEY1 JP2410 3 5V_ST R2426 3 3K Q2405 MMBT3...

Page 23: ... OPT D1451 RCLAMP0502BA OPT C1450 22uF 16V USB_2 USB2_OCD R1453 47 USB_2 JK1451 3AU04S 305 ZC LG USB_2_NORMAL 1 2 3 4 5 IC1451 AP2191DSG EAN61849601 USB_2 3 IN_2 2 IN_1 4 EN 1 GND 5 FLG 6 OUT_1 7 OUT_2 8 NC 5V_USB SIDE_USB1_DM USB1_CTL SIDE_USB1_DP C1455 0 1uF USB_2 L1451 CIS21J121 JK1450 1 3AU04S 345 ZC H LG USB_1_32LS3500 1 2 3 4 5 R1456 10K USB_2 L1451 1 MLB 201209 0120P N2 120 ohm JK1451 1 3AU...

Page 24: ...D 19 18 10 CK 4 D1 1 D2 17 9 D0 8 D0_GND 3 D2 16 7 D0 6 D1 15 DDC_SCL_1 5V_HDMI_4 DDC_SCL_2 R828 10K HDMI_2 R885 2 7K HDMI_2 R835 3 3K HDMI_SIDE D1 _HDMI1 DDC_SCL_4 C803 0 1uF 16V NON_CI_CAP_HDMI_SIDE 5V_HDMI_1 D1 _HDMI4 CK _HDMI1 R897 1K HDMI_SIDE D2 _HDMI4 R801 3 3K HDMI_2 R887 2 7K HDMI_SIDE R891 2 7K HDMI_SIDE Q802 MMBT3904 NXP E B C Q801 MMBT3904 NXP HDMI_2 E B C Q803 MMBT3904 NXP HDMI_SIDE E...

Page 25: ...DSUB_G C1107 100pF 50V NON_CI_CAP_PC_AUDIO C1121 100pF 50V SPDIF_OPTIC RGB_DDC_SDA R1108 15K PC_AUDIO JK1103 2F01TC1 CLM97 4F SPDIF_OPTIC 3 VIN 2 VCC 1 GND 4 SHIELD R1111 10K PC_AUDIO R1104 10K OPT DSUB_HSYNC R1140 2 2K RGB_PC DSUB_VSYNC DSUB_B R1146 10K RGB_PC C1110 10uF 16V OPT 5V_Normal C1109 22uF 16V OPT R1103 470K PC_AUDIO C1131 0 1uF 16V SPDIF_OPTIC SPDIF_OUT PC_R_IN RGB_DDC_SCL R1139 2 2K R...

Page 26: ...pass C1001 0 1uF COMMERCIAL P1000 12507WR 04L OS_Debug P1000 1 VCC 2 PM_RXD 3 GND 4 RM_TXD 5 GND C1004 0 1uF COMMERCIAL IC1000 MAX3232CDR EAN41348201 COMMERCIAL 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 JP1000 PM_RXD 3 5V_ST C1000 0 33uF COMMERCIAL R1003 100 R1002 100 JP1002 JP1001 JP1003 JP1004 D1001 20V ADUC 20S 02 010L OPT D1000 A...

Page 27: ...704 10K OPT L702 70 ohm FHD L701 BLM18SG700TN1D 70 ohm HD AUO_GND LGD_NC LVDS_SEL 30Pin LVDS Connector For HD 60Hz_Normal LVDS for large inch 51Pin LVDS Connector For FHD 60Hz RXB3 RXA4 RXA0 RXB4 RXB1 RXB1 RXA4 RXB3 RXA4 RXA2 RXB3 RXB2 MIRROR FOR FHD REVERSE 8bit RXA0 RXA3 RXB0 RXA2 RXACK RXA1 RXA4 RXB1 RXB3 RXA2 RXB2 RXB4 RXB3 RXB0 MIRROR RXB3 RXB2 RXBCK RXACK RXB3 RXB1 RXA1 RXA0 RXB2 RXB4 RXA2 R...

Page 28: ...2 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 DQL0 E3 DQL1 F7 DQL2 F2 DQL3 F8 DQL4 H3 DQL5 H8 DQL6 G2 DQL7 H7 DQU0 D7 DQU1 C3 DQU2 C8 DQU3 C2 DQU4 A7 DQU5 A2 DQU6 B8 DQU7 A3 VREFCA M8 VREFDQ H1 ZQ L8 VDD_1 B2 VDD_2 D9 VDD_3 G7 VDD_4 K2 VD...

Page 29: ...4L_S7LR2 SPI_SCK 3 5V_ST 3 5V_ST C1401 0 1uF OS R1404 4 7K OPT SPI_CS SPI_SDO IC1401 MX25L8006EM2I 12G S_FLASH_MAIN_MACRONIX 3 WP 2 SO SIO1 4 GND 1 CS 5 SI SIO0 6 SCLK 7 HOLD 8 VCC R1405 33 OS R1403 10K OPT SPI_SDI FLASH_WP R1401 0 OPT IC1401 1 W25Q80BVSSIG S_FLASH_MAIN_WINBOND 3 WP IO2 2 DO IO1 4 GND 1 CS 5 DI IO0 6 CLK 7 HOLD IO3 8 VCC 3 5V_ST Q1401 MMBT3904 NXP OPT E B C Serial Flash for SPI bo...

Page 30: ...ECT 4 L 5 GND 1 R 3 3V_Normal R1504 10K HEAD_PHONE C1503 1000pF 50V OPT HP_LOUT R1503 1K HEAD_PHONE HP_DET 3 5V_ST HP_ROUT SIDE_HP_MUTE R1501 1K HEAD_PHONE C1502 1000pF 50V OPT R1502 1K HEAD_PHONE Q1502 MMBT3904 NXP HEAD_PHONE_POP E B C Q1503 MMBT3904 NXP HEAD_PHONE_POP E B C Q1505 MMBT3904 NXP HEAD_PHONE_POP E B C Q1504 MMBT3904 NXP HEAD_PHONE_POP E B C Q1501 MMBT3906 NXP HEAD_PHONE_POP E B C Q15...

Page 31: ...CM_A 1 CI_ADDR 2 CI_MDI 5 PCM_5V_CTL PCM_A 7 AR1908 33 CI_OE CI_ADDR 8 GND CI_OE CI_TS_CLK C1909 0 1uF CI_ADDR 7 CI_IORD CI_DATA 0 7 CI_ADDR 1 CI_MDI 3 PCM_A 11 CI_ADDR 6 P1902 10067972 050LF G1 G2 57 21 52 16 10 47 41 5 36 59 23 45 54 18 49 43 13 7 38 2 25 56 20 51 15 9 46 40 4 35 58 22 53 17 11 48 42 12 6 37 1 24 55 19 50 44 14 8 39 3 26 60 27 61 28 62 29 63 30 64 31 32 33 34 65 66 67 68 69 C190...

Page 32: ...21 GP4L_S7LR2 JK2100 XRJV 01V 0 D12 080 ETHERNET_XMULTIPLE 1 2 3 4 5 6 7 8 9 9 EPHY_RP JK2100 1 BS R430051 ETHERNET_UDE 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 EPHY_RN 2 5V_Normal EPHY_TN EPHY_TP L3707 BLM18PG121SN1D ETHERNET C2104 0 01uF 50V ETHERNET D2103 5 5V ADLC 5S 02 015 OPT D2104 5 5V ADLC 5S 02 015 OPT D2105 5 5V ADLC 5S 02 015 OPT D2101 5 5V ADLC 5S 02 015 OPT ETHERNET H W option ETHERNET Cop...

Page 33: ...9 0 1uF 16V DVB_S FE_TS_VAL 1 23V_TU C2615 10uF 10V DVB_S C2620 0 1uF 16V T2 C2632 10uF 10V DVB_S 3 3V_S2_DE TU2601 TDSQ G001D TU_T C S2 1 NC_1 2 RESET 3 SCL 4 SDA 5 B1 3 3V 6 SIF 7 B2 1 8V 8 CVBS 9 T C_IF_AGC 10 T C_DIF P 11 T C_DIF N 12 NC_2 13 NC_3 14 NC_4 15 GND_1 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 GND_2 29 GND_3 30 B3 1 23V 31 S2_RESET 38 SHIE...

Page 34: ...IC2700 A8290SETTR T LNB 1 BOOST 3 TCAP 7 TDI 9 VREG 10 SDA 11 ADD 12 SCL 13 NC_2 14 IRQ 15 NC_3 16 NC_4 17 NC_5 18 NC_6 19 BFC 20 NC_7 21 NC_8 22 BFO 23 NC_9 24 BFI 25 VIN 26 LX 27 GNDLX 28 LNB 5 TDO 8 GND 6 EXTM 4 NC_1 2 VCP 29 EP C2708 0 22uF LNB C2701 0 01uF 50V LNB C2710 27pF OPT A_GND C2705 68uF 35V LNB A_GND R2706 0 R2705 0 D2700 40V SX34 LNB D2702 40V SX34 LNB C2712 0 1uF 50V LNB A_GND ZD1 ...

Page 35: ...0 1uF 50V EU_OPT COMP2_Pb R2867 33K EU_OPT C2808 4700pF EU_OPT R2828 470 EU_OPT R2811 75 EU_OPT COMP2_R_IN R2818 12K DTV MNT_R_OUT 12V 15V R2807 75 EU_OPT C2816 0 1uF EU_OPT R2815 22 EU_OPT L2800 BLM18PG121SN1D EU_OPT 3 5V_ST C2813 0 1uF 16V REAR_AV R2817 3 9K EU_OPT SC1 COMP1_R_IN R2816 75 EU_OPT 0 R2809 EU_OPT R2800 0 COMPONENT1 COMP2_L_IN R2860 2 2K EU_OPT SC1_ID R2865 470K OPT 3 3V_Normal R283...

Page 36: ... AUD_LRCK SPK_L C3403 0 1uF 16V C3407 0 1uF 16V AUD_SCK C3417 10uF 35V C3400 0 1uF 50V C3411 0 1uF 50V R3410 43 C3422 0 22uF 50V 24V C3416 0 1uF 50V 3 3V_AMP C3419 0 22uF 50V L3404 10 0uH 3 5V_ST Q3400 MMBT3904 NXP NON_LIPS E B C R3409 43 AMP_MUTE 24V_AMP C3413 330pF 50V C3414 330pF 50V C3426 1000pF 50V C3427 1000pF 50V C3425 1000pF 50V C3424 1000pF 50V C3415 1uF 50V C3412 1uF 50V L3400 CIS21J121 ...

Page 37: ......

Page 38: ...error No power 7 7 Off when on off while viewing power auto on off 8 8 C Audio error No audio Normal video 9 9 Wrecked audio discontinuation noise 10 10 D Function error Remote control Local switch checking 11 11 External device recognition error 12 12 E Noise Circuit noise mechanical noise 13 13 F Exterior error Exterior defect 14 First of all Check whether there is SVC Bulletin in GCSC System fo...

Page 39: ...7 10 Check Link Cable LVDS reconnection condition A8 A9 11 Adjustment Test pattern ADJ Key A10 12 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 13 Check Link Cable LVDS reconnection condition A8 A9 14 Adjustment Test pattern ADJ Key A10 15 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 16 Exchange T Con Board 2 A 2...

Page 40: ...ck record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 1 14 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A6 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 ...

Page 41: ...replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 14 LCD TV Error symptom 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 42: ...ck Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 3 14 L...

Page 43: ...t maker TV etc Y Change satellite setting match with installed ANT N Normal Picture Y Close N A6 Standard Repair Process Established date Revised date 4 14 LCD TV Error symptom 2012 01 14 Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Normal setting Contact with signal distributor or broadcaster Cable or Air Close N Check Tuner soldering Rep...

Page 44: ...vice and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A7 N Y End Replace module Request repair for external device cable Color error Check Test pattern A10 A8 A9 Standard Repair Process Established date Revised date 5 14 LCD TV Error symptom 2012 01 14 Copyright 2012 LG Electronics Inc All ri...

Page 45: ...g Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen n...

Page 46: ...ltage of each output of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A11 A12 A13 A4 Standard Repair Process Established date Revised date 7 14 LCD TV Error symptom Stand By Red Close 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE...

Page 47: ...by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reserved Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Download POWEROFF_...

Page 48: ...repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A15 A16 Disconnection Established date Revised date 9 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ...ct 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 End Establish...

Page 50: ...rry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A17 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 A17 Replace Main B D Y A17 Standard Repair Process Established date Revised date 11 14 LCD TV Error symptom 2012...

Page 51: ... device cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 12 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...s shown in the solution manual For models without any fix information provide the description OR Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date 13 14 LCD TV ...

Page 53: ...te controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 14 14 LCD TV Error symptom Standard Repair Process 2012 01 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

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