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Repair Process-Reference data
PDP TV
Symptom
P+
P-
Vol+
Vol-
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 Local Key operation
Power
OK
Menu
Input
Making
IR
GND
KEY1
KEY2
LED-RED
GND
SCL
SDA
GND
3.3V ST
NC
NC
TOUCH_VER_CHK
NC
NC
1.Check connector was inserted properly
on Main board and IR board.
2. Check whether appear voltage on multi meter
when operate Local switch.
※ Test Condition for case 3
→ Check Point: Pin 2,3( Key1,Key2)
→ TV: power on status
→ Multi meter: Select DC 10V
A27
A27
LGE Internal Use Only
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