LG 50PW450 Service Manual - Page 72

Repair Process-Reference data, D. General function defect

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Repair Process-Reference data PDP TV Symptom D. General function defect Check Local Key operation Making 2010. 11. 16 전자 - 6-2 A27 IR GND KEY1 KEY2 LED-RED GND SCL SDA GND 3.3V ST NC NC TOUCH_VER_CHK NC NC P+ P- Vol+ Vol- OK Menu Input Power IR & Local key Board for 2/3/4/550 TOOL A27 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 ⓒ LG Electronics. Inc.2010

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ⓒ
LG Electronics. Inc.2010
Making
전자
- 6-2
PDP TV
Repair Process-Reference data
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
P+
P-
Vol+
Vol-
OK
Menu
Input
Power
D. General function defect
Check Local Key operation
Symptom
A27
TOUCH_VER_CHK
NC
NC
IR
GND
KEY1
KEY2
LED-RED
GND
SCL
SDA
GND
3.3V ST
NC
NC
IR & Local key Board for 2/3/4/550 TOOL
2010. 11. 16