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Repair Process-Reference data
PDP TV
IR Board for XXPQ20/30xx
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
D. General function defect
Symptom
Check Remote control IR operation
IR Board
IR Board for XXPQ60xx
Making
Revision
IR
GND
KEY1
KEY2
KEY-ON
GND
SCL-Sub/AMP
SDA-Sub/AMP
GND
+5V ST
(+5V-Multi)
( +3.3V-CI )
GND
LED-Red
LED-Green
▣ Checking method
1.Check connector was inserted properly
on Main board and IR board.
2. Check +5V
Voltage at Pin10
ST
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
2009. 2 . 1
A26
LGE Internal Use Only
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