Read LG 50PQ100R-ZA (CHASSIS:PP91A) Service Manual online
Making
Revision
2009. 2 . 1
PDP TV
Symptom
D. General function defect
Repair Process-Reference data
1.Check connector was inserted properly
on Main board and IR board.
2. Check +5V
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
→ TV: power on status
→ Multi meter: Select DC 10V
▣ Checking method
Check Remote control IR operation
IR Board for XXPQ60xx
SCL-Sub/AMP
GND
KEY-ON
KEY2
KEY1
GND
SDA-Sub/AMP
GND
+5V ST
(+5V-Multi)
( +3.3V-CI )
LED-Red
LED-Green
GND
IR
IR Board for XXPQ20/30xx
IR Board
A26
A26
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