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32LG6000 (CHASSIS:LD89A) - LG TV Service Manual (repair manual). Page 17

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Check EDID EEPROM
1. IC102 VDD Check
-> pin8 : 5V
2. DDC IIC line check
-> IC102 pin 6, 5
Check RGB Jack
1. RGB LINK check
->R189 or P101 pin10
Check Video, Audio
Check sink signal
1. H-sync : P101 pin13
2. V-sync : P101 pin14
No problem : case 1
No problem:  case 2
Check App S/W
If App S/W OK then replace IC102.
NG
NG
Check App S/W.
If App S/W OK then replace IC100.
Check Video & sink signal
1. Red : P101 pin1 and C501
2. Green : P101 pin2 and C502
3. Blue : P101 pin3 and C503
NG
Check App S/W.
If App S/W OK then replace IC100.
NG
Check 74HC14D IC103
1. H-sync : pin4
2. V-sync : pin8
3. If problem with IC103 then replace IC103
No problem
or No sound
Check EDID
1. Read EDID data
EDID download
and recheck
No problem
No problem
2-5. In case of abnormal display or sound when VGA Input mode
Check video signal
1. Y : JK102 pin3A and C509
2. Pb : JK102 pin5B and C512
3. Pr : JK102 pin5C and C515
Check Component Jack.
1. COMP LINK check
->R167 or JK102 pinA4
Check Video, Audio
Check Audio signal
1. R : JK102 pin3E and C614
2. L : JK102 pin5D and C613
Audio NG
Check App S/W.
If App S/W OK then replace IC100.
No problem
Check the input source of Equipment.
NG
NG
Video NG
Check App S/W.
If App S/W OK then
Replace IC100.
No problem
2-6. In case of abnormal display or sound when Component Input mode
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