LG Electronics 32LS5610/561T Contents of LCD TV Standard Repair Process Detail Technical Manual

Page 41

Contents of LCD TV Standard Repair Process Detail Technical Manual

No.

Error symptom

Content

Page

Remarks

 

 

 

 

 

1

 

Check LCD back light with naked eye

A1

 

 

 

 

 

 

2

A. Video error_ No video/Normal

LED driver B+ 24V measuring method

A2

 

 

 

 

 

3

audio

Check White Balance value

A3

 

 

 

 

 

 

 

 

4

 

Power Board voltage measuring method

A4

 

 

 

 

 

 

6

A. Video error_ No video/Video

TUNER input signal strength checking method

A5

 

 

 

 

 

7

lag/stop

LCD-TV Version checking method

A6

 

 

 

 

 

 

 

 

9

 

LCD TV connection diagram

A7

 

 

 

 

 

 

10

A. Video error_Color error

Check Link Cable (LVDS) reconnection

A8

 

condition

A9

 

 

 

 

 

 

 

 

 

11

 

Adjustment Test pattern - ADJ Key

A10

 

 

 

 

 

 

12

 

LCD TV connection diagram

A8

 

 

 

 

 

 

13

A. Video error_Vertical/Horizontal bar,

Check Link Cable (LVDS) reconnection

A8

 

residual image, light spot

condition

A9

 

 

 

 

 

 

 

 

14

 

Adjustment Test pattern - ADJ Key

A10

 

 

 

 

 

 

15

 

Exchange T-Con Board (1)

A-1/5

 

 

 

 

 

 

16

 

Exchange T-Con Board (2)

A-2/5

 

 

<Appendix>

 

 

 

17

Exchange LED driver Board (PSU)

A-3/5

55” : driver board

Defected Type caused by T-Con/

Other : PSU

 

Inverter/ Module

 

 

 

 

 

 

18

 

Exchange Module itself (1)

A-4/5

 

 

 

 

 

 

19

 

Exchange Module itself (2)

A-5/5

 

 

 

 

 

 

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Contents SERVICE MANUAL CHASSIS LD21BREAD 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/s5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 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 Calibration3.4 Function Check 4. Total Assembly line process4.1. Adjustment Preparation 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 InspectionScrew specification and application situation SCREW ASSEMBLY WORKING GUIDEח ͷͲͳͤͤͤͪͥͣ͢͡ ͙;ͤ͛ͽͥͦ͑͟͝ͳͼ͑͝;ΒΔΙΚΟΖ͚ ח ͣ͢ͶͲ ח ͷͲͳͤͨͩͩͣ͑͢͡͡ ͙;ͧ͛ͽ͑͢͡͝ͳͼ͑͝;ΒΔΙΚΟΖ͚Side RearLG2111 A IC101LS350T/CS460T Applied Model **LM580T, **560T, **LS350T, **CS460TTDSN G301DG001D 560S, **LS350S, **CS460SLS350S/CS460S EXPLODED VIEW Copyright 2012 LG Electronics. Inc. All rights reserved GP4LS7LR22011.12.01to delete CI or gate for for SYSTEM EEPROMVDDC Normal PowerNormal DDR3PowerDET FROM LIPS & POWER B/D+3.3VNormal +1.5VDDRIR/LED and control for normal models USB2DIODES USB SIDEUSB1DIODES HDMI THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES RGB-PC / SPDIFSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF ISFor Comsumer model, use 4PIN Wafer RS-232CCOMMERCIAL/NonOS MODEL OPTION COMMERCIAL MODEL OPTION LVDS for large inch GP4LS7LR22011/06/03 DDR25612 S7LR2DIVXMS10IC1201 H5TQ1G63DFR-H9CSFLASHMAINWINBOND IC1401-*1 W25Q80BVSSIG Serial Flash for SPI bootSFLASHMAINMACRONIX HEAD Headphone *Option HEADPHONEPHONE 10067972-0500LF CI RegionOption name of this page CISLOT because of Hong Kong ETHERNET H/W option ETHERNETGP4LS7LR22011/06/14 ETHERNET21 TU2602TU2603 TDSS-G101D TDSN-G301D GP4RGLOBALTUNERBLOCKTU2601 TDSQ-G001DOptionLNB DVB-S2 LNB Part AllegroGP4LS7LR22011/11/02 DVBS27 DCDCGND and AGND are connectedFULL SCART / COMPONENT1 SCART / COMPONENT&COMPSITJK2801 PSC008-01AUDIO AMPSTA380BWE 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…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 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 deviceCheck & Repair D. Function error1. Remote controlR/C operating error Y Check technical Signal information input? - Fix information Check input signalRecognition error Replace Main B/DIdentify nose type E. NoiseF. Exterior defect
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