LG Electronics 3450, 340S, 340T H/W option ETHERNET, GP4LS7LR22011/06/14 ETHERNET21, Ethernet

Contents SERVICE MANUAL CHASSIS LD21CREAD THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comSAFETY PRECAUTIONS CONTENTSSERVICING PRECAUTIONS SPECIFICATIONIMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSReplacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Removal4. Model General Specification SPECIFICATION1. Application range 3. Test methodsymbolrate Symbolrate 4.0Msymbols/s to 7.2Msymbols/sDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s DVB-S QPSK 2 ~ 45Msymbol/s5.1. Component Input Y, CB/PB, CR/PR 5. Video resolutions 2D5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported PCDVI 5.3. HDMI InputPC/DTVBoot file Download ADJUSTMENT INSTRUCTION1. Application Range 2. Designation3.3. EDID data 3.1. ADC Process3.2. EDID Download 7. ADC Calibration4.1. Adjustment Preparation 4. Total Assembly line process3.4 Function Check 6.1. Signal Table 4.3. Outgoing condition Configuration5. HI-POT Test 6. Model name & Serial number D/L6.3. Method & notice 7. MAC Address & CI+ key download7.1 MAC Address GP4LOW7.3. LAN PORT INSPECTIONPING TEST 7.2 LAN InspectionSide RearLG2111 A IC101LS350T/CS460T Applied Model **LM580T, **560T, **LS350T, **CS460TTDSN G301DLS350S/CS460S 560S, **LS350S, **CS460SG001D EXPLODED VIEW PowerDET FROM LIPS & POWER B/D+3.3VNormal +1.5VDDR51Pin LVDS Connector For FHD 60Hz LVDS for large inch30Pin LVDS Connector FOR FHD REVERSE10bitGP4LS7LR22011/06/03 DDR25612 S7LR2DIVXMS10IC1201 H5TQ1G63DFR-H9CGP4LS7LR2 Serial Flash for SPI boot2011/06/03 SFLASH1MBOption name of this page CISLOT because of Hong Kong CI Region10067972-0500LF GP4LS7LR22011/06/14 ETHERNET21 H/W option ETHERNETETHERNET IR/CONTROLW/OIROUT IR/LED and control for on.y ’12 sub without IR-OUTTU2602TU2603 TDSS-G101D TDSN-G301D GP4RGLOBALTUNERBLOCKTU2601 TDSQ-G001DOptionLNB DVB-S2 LNB Part AllegroGP4LS7LR22011/11/02 DVBS27 DCDCGND and AGND are connectedGP4LS7LR22011/11/16 AMPSTA380BWE AUDIO AMPSTA380BWENAND FLASH MEMORY VDDC Normal PowerNormal DDR3USB1DIODES USB SIDEHDMI1 HDMI2EANON SIDE HDMIFor CEC HDMI2COMPONENT Full ScartSCART AUDIO OUT SCART AUDIO MUTEGP4LS7LR22011/09/26 RS-232C 4PIN2011/09/05 MSTART DEBUG4PINMSTAR DEBUG4PIN Page Contents of LCD TV Standard Repair Process Continue to the next page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom ContentLCD TV A. Video errorMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24v outputCheck various voltages of PowerBoard 3.5V,12V,20V or 24V…Menu→ Set up→ Support → Signal Test Signal strength Normal over 50% By using Digital signal level meter By using Diagnostics menu on OSDSignal Quality Normal over 50% → Set-Top-Box, Different maker TV etc Check color by input -External Input COMPONENT -RGB A8/ A9※ Check Link CableVertical/Horizontal bar, residual image, light spot External device screen error-Color errorConnect other external device and cable Check color condition by input -External Input -Component RGBCheck Power LED B. Power errorCheck Power On ‘”High” Measure voltage of each output of Power B/DIf Power Off mode is not displayed Check Power B/D voltage Check Power Off ModePOWEROFFABNORMAL1 POWEROFFCPUABNORMAL24V of Power C. Audio errorCheck user menu Speaker off Check audio B+Check audio B+ Voltage In case of External Input signal error Check and fix external device1. Remote controlR/C operating error D. Function errorCheck & Repair Y Check technical Signal information input? - Fix information Check input signalRecognition error Replace Main B/DIdentify nose type E. NoiseF. Exterior defect