LG Electronics 42CS669C-ZD service manual AV Audio, Component/ SCART Audio, RGB Audio

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12. AV Audio

12. AV Audio

Check AV Cable for damage for damage or open conductor.

ok

Check JK1604 & Signal Line.

ok

Follow procedure ’9. All source audio’ trouble shooting guide.

No

Replace Jack.

13. Component/ SCART Audio

Check Component Cable

for damage or open conductor.

ok

Check JK1602, JK1603

& Signal Line.

ok

Follow procedure ’9. All source audio’ trouble shooting guide.

No

Replace Jack.

14. RGB Audio

Check Cable conductors for damage or open conductor.

ok

Check JK1102 & Signal Line.

ok

Follow procedure ’9. All source audio’ trouble shooting guide.

No

Replace Jack.

Copyright ©2012 LG Electronics. Inc. All right reserved.

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LGE Internal Use Only

Only for training and service purposes

 

 

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Contents SERVICE MANUAL CHASSIS LD0AWREAD THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comCONTENTS CONTENTSPRODUCT SAFETY SPECIFICATIONIMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSGeneral Guidance Before returning the receiver to the customerElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSReplacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Power Output, Transistor Device Removal/Replacement4. Model General Specification SPECIFICATION1. Application range 3. Test method6. RGB Input PC 5. Component Video Input Y, CB/PB, CR/PR7. HDMI Input PC/DTV 1 DTV Mode2 PC Mode 1. Application Range ADJUSTMENT INSTRUCTION2. Designation 3. Main PCB check process3.2. EDID Download 3.1. ADC Process3.3. EDID data After downloading, have to adjust Tool Option again4.1. Adjustment Preparation 4. Total Assembly line process3.4. Function Check Manual W/B process using adjusts Remote control6.1. Signal TABLE 4.3. Outgoing condition Configuration6.2. Command Set 5. GND and HI-POT Test7. CI+ Key Download method TROUBLESHOOTING 1. Power-up boot checkNo No No No No 2. Digital TV Video 3. Analog TV VideoNo No No No 5. Component Video 4. AV VideoNo No No ok No7. RGB Video 6. SCART VideoCheck HDMI Cable conductors for damage or open conductor 8. HDMI Video9. All Source Audio 11. Analog TV Audio 10. Digital TV Audio12. AV Audio 13. Component/ SCART Audio14. RGB Audio BLOCK DIAGRAMSide RearEXPLODED VIEW GP3S7LR Only for training and service purposesCopyright 2012 LG Electronics. Inc. All rights reserved LGE Internal Use OnlyVDDC Normal PowerNormal DDR3PowerDET FROM LIPS & POWER B/D+3.3VNormal +1.5VDDRCONTROL IR & LED IC1450 USBDIODESHDMI1 HDMI EEPROMSIDEHDMI GP3S7LR20110324 HDMI8RGB/SPDIF/PC/HP New Item DevelopmentGP3S7LR RS232C9PIN RS232CTHE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES DDR3 1.5V By CAP - Place these Caps near Memory GP3S7LR DDR256IC1201-*1 K4B1G1646G-BCH9IC1401-*1 GP3S7LR SFLASH20110511 GP3S7LRTUNERL GP4RGLOBALTUNERBLOCKIC501 NTP-7400L GP3S7LR NTP7400GP3S7LR REAR JACK Full Scart/ Comp1SIDE COMPONENT PHONE JACK New Item Developmen Option name of this page CISLOT because of Hong Kong CI RegionGP3S7LR PCMCI 10067972-0500LFSMD GAS GASKETGP3 S7LR 20110324