LG Electronics 42LN54**-Z* manuals
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Very often issues with LG Electronics 42LN54**-Z* begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
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LG Electronics 42LN54**-Z* Service Manual
76 pages 8.53 Mb
3 SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICEGeneral GuidanceBefore returning the receiver to the customer, Leakage Current Cold Check(Antenna Cold Check) Leakage Current Hot Check (See below Figure) Leakage Current Hot Check circuit 4 SERVICING PRECAUTIONS6 SPECIFICATION1. Application range 2. Requirement for Test 3. Test method 4. Model General Specification 8 5. Video resolutions (2D)5.1. Component Input (Y, CB/PB, CR/PR) 5.2. HDMI Input(PC/DTV) 9 6. Video resolutions (3D)6.1. HDMI Input 6.2. RF 3D Input(DTV) 6.3. USB Input 6.4. DLNA Input 6.5. 3D Input mode 10 ADJUSTMENT INSTRUCTION1. Application Range 2. Designation 3. Main PCB check process* Boot file Download * USB DOWNLOAD* After downloading, have to adjust Tool Option again. 11 3.1. ADC Process3.2. EDID Download 3.3. EDID data 3.4 Function Check 12 4. Total Assembly line process4.1. White Balance adjustment* Auto-control interface and directions * Manual W/B process using adjust Remote control. 13 4.2. 3D function test4.3. IR emitter inspection 4.4. MHL Test 4.5. Outgoing condition Configuration 14 5. HI-POT Test5.1. HI-POT auto-check preparation 5.2. HI-POT auto-check 5.3. Checkpoint 6. Model name & Serial number D/L6.1. Signal Table 6.2. Command Set 6.3. Method & notice 15 7. MAC Address & CI+ key download7.1 MAC Address SET PC7.1.1 Equipment & Condition 7.1.2 Download method 7.2 LAN Inspection7.2.1. Equipment & Condition 7.2.2. LAN inspection solution 7.3. LAN PORT INSPECTION(PING TEST)7.3.1. Equipment setting 7.3.2. LAN PORT inspection (PING TEST) GP4_LOWSPK L/R FPC(51P) (LGIT) TDSQ-G501D(B)HDMI2 HDMI1 USB SPDIF Component1 16 Re a rSi de- LN54*S, LN54*R LN54*6, LN54*5, LA61*S, LA61*6 S7LR-M (LGE2121 -MS) IC101 BLOCK DIAGRAM1. [LD31B] DVB-T/C/S2(2D/3D) TDSQ-G601D(B) (LGIT)Audio AMP STA380BWF SPK L/R With MHL HDMI2 HDMI1 USB FPC(51P) 17 Re a r2. [LD31B] DVB-T2/C/S2(2D_3D) Si de- LN54*V, LN54*U, LA61*V S7LR-M (LGE2121 -MS) IC101SPDIF Component1 TDSS- G501D(B) (LGIT) S7LR-M (LGE2121 -MS) - LN54*0, LN54*4, LN54*B, LN54*3SC1_R/G/B F-SCART SC1_CVBS_IN With MHL HDMI2 USB IC101 18 Rea rSi deCI Slot HDMI1 Audio AMP STA380BWFLVDS (FHD/HD/50Hz) FPC(51P/30P) IC1201 H5TQ2G63DFR- PBC 19 EXPLODED VIEW20 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS SYM.A I2C EEPROM PM MODEL OPTION DIMMING 2012/07/05 MAIN1_EU_OS 1AR102 22 22IC104-*1 R1EX24256BSAS0A NVRAM_RENESASIC104 M24256-BRMN6TP NVRAM_ST IC101-*1 LGE2121-MS (M1_L13_MS10) S7LR-M_MS10 from CI SLOTfor SYSTEM EEPROM (IC104) for SERIAL FLASH <CHIP Config(LED_R/BUZZ)> Boot from SPI CS1N(EXT_FLASH) 1b0 Boot from SPI_CS0N(INT_FLASH) 1b1 NAND FLASH MEMORY<CHIP Config> (I2S_OUT_BCK,I2S_OUT_MCK,PAD_PWM1PAD_PWM0) SYM.DCopyright 2013 LG Electronics. Inc. All rights reserved. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2012/07/05 MAIN2_EU_OS 2 MODEL OPTIONDUAL_STREAM B8 PHM_ON NON_DUAL_STREAM MODEL_OPT_7 * Dual Stream is only Korea 3D spec MIU1-128M MODEL_OPT_5 256M 21 SYM.CSTby 3.5VCOMP2 CVBS In/OUT I2S_I/F SOC_RESET H/P OUT AUDIO OUT DTV_ATV_IF SCART1_RGB/COMP1 VDDC 1.05V DDR3 1.5VTUNER_I2C HDMI AUDIO IN ANALOG SIF Normal 2.5V Normal Power 3.3V SYM.EMemory MODEL_OPT_4 MODEL_OPT_6 Memory OPTIONU23 B8 128M 128M+128M 256M+128M 0 0 0 0 1 1 1 1 Note Ginga PIN NAME HD HIGH NON_DVB_T2 F4 DVB_T2 NON_DVB_S PHM_OFF MODEL OPTIONLOW T25 MIU0-128M MIU0-256M A8 MODEL_OPT_0 MODEL_OPT_2 U23 T24 AB3 AB2 MODEL_OPT_6 MIU1-NO_DDR DVB_S MODEL_OPT_3 MODEL_OPT_4 NON_M120 FHD MODEL_OPT_1 M120 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Power_PD2 2012/09/19 4IC407 AP7173-SPG-13 HF(DIODES) 1.5A Vout=0.827*(1+R1/R2) 3A 22 PANEL_POWER+2.5V_Normal S7LR core 1.15V volt+3.5V_ST --> 3.375V --> 3.46V FROM LIPS & POWER B/D +3.3V_NormalVout=0.8*(1+R1/R2)=1.5319 +5V_Normal & +5V_USB +1.5V_DDR Power_DET+24V --> 3.78V --> 3.92V (3.79V) Vout=0.8*(1+R1/R2)+12V --> 3.58V --> 3.82V (3.68V) L13 POWER BLOCK (POWER DETECT 2)FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IR/CONTROL 2012/07/18 6 23 IR/LED and Control24 USB (SIDE)FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2012/07/12 HDMI_R1_S1 8+3.3V_Normal IC802 BD82020FVJ SIDE_HDMI (MHL) CEC MHL OCP HDMI_1 25 HDMI (REAR 1 / SIDE 1 MHL)FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS NC4_S7LRM SPDIF 12/06/12 10 SPDIF OPTIC JACK 26 SPDIF27 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC1201IC1201-*5 NT5CB128M16FP-DI IC1202-*5 NT5CB128M16FP-DI IC1202-*2 NT5CB64M16DP-DH IC1201-*2 NT5CB64M16DP-DH IC1201-*1 H5TQ1G63EFR-PBC IC1202-*1 H5TQ1G63EFR-PBC IC1202-*4 H5TQ2G63DFR-PBC IC1201-*4 H5TQ2G63DFR-PBC IC1202-*3 K4B2G1646E-BCK0 IC1201-*3 K4B2G1646E-BCK0 K4B1G1646G-BCK0 M1_DDR (2DDR) 2012/07/16 12DDR_1600_1G_SS EAN61836301 IC1202 K4B1G1646G-BCK0 DDR_1600_1G_SS EAN61836301DDR_1600_2G_SS DDR_1600_2G_HYNIX DDR_1600_1G_HYNIX S7LR-M_NON_MS10DDR_1600_1G_NANYA DDR_1600_2G_NANYA CLose to Saturn7M IC CLose to DDR3 CLose to DDR3 CLose to Saturn7M IC SYMBOL.B FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS S_FLASH_OS 2012/06/20 13IC1300 MX25L8006EM2I-12G SPI_FLASH_MACRONIX IC1300-*1 W25Q80BVSSIG SPI_FLASH_WINBOND 28 Serial Flash for SPI boot(OS)FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2012/06/20 HEADPHONE 15 29 Headphone *Option : HEAD_PHONE* Option name of this page : CI_SLOTFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS +3.3V_Normal +3.3V_Normal CI POWER ENABLE CONTROL 19 PCMCI CI DETECT CI TS INPUT CI HOST I/F CI SLOT 30 CI Region(because of Hong Kong) FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LAN 2012/06/21 21 31 ETHERNET* H/W option : ETHERNETFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS TUNER_EU 26 Close to the tunerVo=VREF*(1+R2/R1) TU2602 TDSQ-G601D TU2601 TDSQ-G501D TU2604 TDSM-C601D 32 NETCAST4.0 EU&CHUNA_TUNER_BLOCKClose to TUNER close to TUNER ERROR & VALID PIN FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2012/06/19 LNB 27 33 DVB-S2 LNB Part AllegroInput trace widths should be sized to conduct at least 3A 3A(Option:LNB)Ouput trace widths should be sized to conduct at least 2A 2AMax 1.3A FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2012/08/29 AMP_STA380BWEF 34 34 AUDIO AMP(STA380BWEF)35 MSTART DEBUG_4PIN36 RS-232CFILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LVDS_EU 2012/06/22 11 37 LVDS (EU)Shift [51Pin LVDS Connector] (For FHD 60Hz) FOR FHD REVERSE(10bit) Change in S7LR FOR FHD REVERSE(8bit) [30Pin LVDS Connector] (For HD 60Hz_Normal) Change in S7LR EU pin assign is different from NON EU. Because of position of HD wafer. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 28 REAR_JACK_EUJK2801 PSC008-01 IC2801 AZ4580MTR-E1 EU 38 SCART / COMPONENT&COMPSITSCART AMP FULL SCART [SCART AUDIO MUTE] COMPONENTY or module End Established date 2013. 01 .09 Revised date 1/14 40 LCD TV symptom A. Video error No video/ Normal audio (Main B/D Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) First of all, Check whether all of cables between board is inserted properly or not. 41 A4 Revised date 2/14 Picture broken/ Freezing 42 A5 or broadcaster (Cable or Air) . By using Digital signal level meter . By using Diagnostics menu on OSD A6 ( Menu Set up Support Signal Test ) - Signal strength (Normal : over 50%) - Signal Quality (Normal: over 50%) N Established Tuning fail, Picture broken/ Freezing 43 A6 Y A5 Established Check external N Replace Main B/D Color error 44 A7 A8/ A9 A10 date Revised date 5/14 symptom 2013. 01 .09 45 Vertical/Horizontal bar, residual image, light spot Request repair error Vertical / Horizontal bar, residual image, light spot, external device color error A10 External device screen error-Color error Connect other external device and cable Established 2013. 01 .09 symptom date Revised date 6/14 A7 A8/ A9 B. Power error 2013. 01 .09 No power Close A4 A12 Power LED DC Power on Replace Measure voltage of each output of Power B/D A11 A13 LCD TV 46 47 B. Power error 2013. 01 .09 Off when on, off while viewing, power auto on/off A13 A14 date Revised date 8/14 symptom LCD TV "POWEROFF_OFFTIMER" Power off by OFF TIMER Abnormal "POWEROFF_CPUABNORMAL" Power off by CPU Abnormal * Please refer to the all cases which can be displayed on power off mode. 48 C. Audio error LCD TV abnormal audio/discontinuation/noise is same after Check input signal compared to No audio 49 C. Audio error 2013. 01 .09 A16 symptom Wrecked audio/ discontinuation/noise -External Input Request repair to external N date Revised date 10/14 LCD TV 50 D. Function error Remote control & Local switch checking A17 A4 (Power B/D dont have problem) 1. Remote control(R/C) operating error LCD TV 51 D. Function error LCD TV Replace LED driver Mechanical noise is a natural 52 E. Noise LCD TV 53 F. Exterior defect LCD TV 54 Contents of LCD TV Standard Repair Process Detail Technical Manual Defected Type caused by T-Con/ Continue to the next page 55 Contents of LCD TV Standard Repair Process Detail Technical Manual
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