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Repair Process-Reference data
PDP TV
Symptom
IR & Local key Board for 2/3/4/550 TOOL
Copyright © 2011 LG Electronics Inc. All rights reserved.
Only for training and service purposes
D. General function defect
Check Remote control IR operation
IR Board
A26
Making
Revision
IR
GND
KEY1
KEY2
LED-RED
GND
SCL
SDA
GND
3.3V ST
NC
NC
TOUCH_VER_CHK
NC
NC
▣ Checking method
1.Check connector was inserted properly
on Main board and IR board.
2. Check +3.3V_ST Voltage at Pin10
3. Check whether appear voltage on multi meter
when operate remote control.
※ Test Condition for case 3
→ Check Point: Pin 1( IR)
→ TV: power on status
→ Multi meter: Select DC 10V
A26
LGE Internal Use Only
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