Check Local Key Operation - LG 50PW450 Service Manual

Repair Process-Reference data
PDP TV
Symptom
P+ P- Vol+ Vol-
IR & Local key Board for 2/3/4/550 TOOL
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
전자 - 6-2
2010. 11. 16
A27
ⓒ LG Electronics. Inc.2010