LG 50PW450 Service Manual - Page 71

D. General function defect, Repair Process-Reference data

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Repair Process-Reference data PDP TV Symptom D. General function defect Check Remote control IR operation Making Revision 2010. 11. 16 전자 - 6-2 A26 IR Board IR GND KEY1 KEY2 LED-RED GND SCL SDA GND 3.3V ST NC NC TOUCH_VER_CHK NC NC IR & Local key Board for 2/3/4/550 TOOL A26 ▣ 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 ⓒ LG Electronics. Inc.2010

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ⓒ
LG Electronics. Inc.2010
Making
전자
- 6-2
Revision
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 +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
▣
Checking method
Check Remote control IR operation
IR & Local key Board for 2/3/4/550 TOOL
IR Board
A26
A26
TOUCH_VER_CHK
NC
NC
IR
GND
KEY1
KEY2
LED-RED
GND
SCL
SDA
GND
3.3V ST
NC
NC
2010. 11. 16