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Repair Process-Reference data
PDP TV
▣ Checking Method
① Check input voltage(5V of P101) on Control B/D
② Check LED On
③ If LED light doesn't appear, check Crystal X101 output
④ Check 3.3V, 5V,1.8V FET
⑤ Check MCM at VS_DA by using Multi meter
③ Check Crystal(X101)
⑤ Check MCM
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A. Picture Problem
Symptom
Control Board Checking Method(42G2/50G2)
Check oscillation of Crystal
(Normal: 100 MHZ, 1.6v)
MCM Check point
(+)VS_DA / (-) GND
(Normal: 3.3V )
Making
Revision
④ Check Crystal(X101)
GND
3.3 V
1.8 V
5 V
② Check LED On
A13
2009. 2 . 1
A13
① Check Input voltage
ⓒ LG Electronics. Inc.2009
LGE Internal Use Only
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