LG Electronics 32LS359T-ZC, 32LS3500-ZA, 32LS3590 Contents of LCD TV Standard Repair Process

Page 38

Contents of LCD TV Standard Repair Process

No.

Error symptom (High category)

Error symptom (Mid category)

Page

Remarks

 

 

 

 

 

1

 

No video/Normal audio

1

 

 

 

 

 

 

2

 

No video/No audio

2

 

 

 

 

 

 

3

A. Video error

Tuning fail, Picture broken/ Freezing

3, 4

 

 

 

 

 

4

 

Color error

5

 

 

 

 

 

 

5

 

Vertical/Horizontal bar, residual image,

6

 

 

light spot, external device color error

 

 

 

 

 

 

 

 

 

 

6

 

No power

7

 

 

B. Power error

 

 

 

7

Off when on, off while viewing, power

8

 

 

 

 

auto on/off

 

 

 

 

 

 

 

 

 

 

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 for these model.

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Only for training and service purposes

 

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Contents READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LD21CSERVICE MANUAL http//aic.lgservice.comSERVICING PRECAUTIONS CONTENTSSAFETY PRECAUTIONS SPECIFICATIONSAFETY PRECAUTIONS IMPORTANT SAFETY NOTICESERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesSmall-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Removal1. Application range SPECIFICATION4. Model General Specification 3. Test methodDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s Symbolrate 4.0Msymbols/s to 7.2Msymbols/ssymbolrate DVB-S QPSK 2 ~ 45Msymbol/s5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 5.3. HDMI InputPC/DTV PCDVI1. Application Range ADJUSTMENT INSTRUCTIONBoot file Download 2. Designation3.2. EDID Download 3.1. ADC Process3.3. EDID data 7. ADC Calibration3.4 Function Check 4. Total Assembly line process4.1. Adjustment Preparation 4.4. IR emitter inspection 4.2. EYE-Q function check4.3. 3D function test Manual W/B process using adjust Remote control6. Model name & Serial number D/L 6.1. Signal Table5. HI-POT Test 5.1. HI-POT auto-check preparation7.2 LAN Inspection 7. MAC Address & CI+ key download7.1 MAC Address 7.3. LAN PORT INSPECTIONPING TESTLG2111 A RearSide IC101TDSN Applied Model **LM580T, **560T, **LS350T, **CS460TLS350T/CS460T G301DG001D 560S, **LS350S, **CS460SLS350S/CS460S EXPLODED VIEW IMPORTANT SAFETY NOTICE+3.3VNormal FROM LIPS & POWER B/DPowerDET +1.5VDDR30Pin LVDS Connector LVDS for large inch51Pin LVDS Connector For FHD 60Hz FOR FHD REVERSE10bitIC1201 S7LR2DIVXMS10GP4LS7LR22011/06/03 DDR25612 H5TQ1G63DFR-H9C2011/06/03 Serial Flash for SPI bootGP4LS7LR2 SFLASH1MB10067972-0500LF CI RegionOption name of this page CISLOT because of Hong Kong ETHERNET H/W option ETHERNETGP4LS7LR22011/06/14 ETHERNET21 IR/LED and control for on.y ’12 sub without IR-OUT IR/CONTROLW/OIROUTTU2601 GP4RGLOBALTUNERBLOCKTU2602TU2603 TDSS-G101D TDSN-G301D TDSQ-G001DGP4LS7LR22011/11/02 DVBS27 DVB-S2 LNB Part AllegroOptionLNB DCDCGND and AGND are connectedAUDIO AMPSTA380BWE GP4LS7LR22011/11/16 AMPSTA380BWENAND FLASH MEMORY Normal Normal PowerVDDC DDR3USB SIDE USB1DIODESFor CEC HDMI2EANON SIDE HDMIHDMI1 HDMI2SCART AUDIO OUT Full ScartCOMPONENT SCART AUDIO MUTERS-232C 4PIN GP4LS7LR22011/09/26MSTAR DEBUG4PIN MSTART DEBUG4PIN2011/09/05 Page Contents of LCD TV Standard Repair Process Error symptom Contents of LCD TV Standard Repair Process Detail Technical ManualContinue to the next page ContentMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A. Video errorLCD TV A2 Check Power Board 24v outputBoard 3.5V,12V,20V voltages of PowerCheck various or 24V…Signal Quality Normal over 50% By using Digital signal level meter By using Diagnostics menu on OSDMenu→ Set up→ Support → Signal Test Signal strength Normal over 50% → Set-Top-Box, Different maker TV etc ※ Check A8/ A9Check color by input -External Input COMPONENT -RGB Link CableConnect other external device and cable External device screen error-Color errorVertical/Horizontal bar, residual image, light spot Check color condition by input -External Input -Component RGBCheck Power On ‘”High” B. Power errorCheck Power LED Measure voltage of each output of Power B/DPOWEROFFABNORMAL1 Check Power Off ModeIf Power Off mode is not displayed Check Power B/D voltage POWEROFFCPUABNORMALCheck user menu Speaker off C. Audio error24V of Power Check audio B+In case of External Input signal error Check and fix external device Check audio B+ VoltageCheck & Repair D. Function error1. Remote controlR/C operating error Recognition error Check input signalY Check technical Signal information input? - Fix information Replace Main B/DE. Noise Identify nose typeF. Exterior defect
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