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Repair Process-Reference data
PDP TV
◆ Y Drive board
42G2
Scan IC
Input
connecter
Output connecter
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A. Picture Problem
Symptom
Y Drive B/D Checking method
50G2
Input
connecter
Making
Revision
< In case that Y Drive is ok >
. Diode
- Forward: 0.7V
- Reverse: O.L
▶ Scan IC output checking method
1. Fixed Red Probe("-") at one pin of any Input connector
2. Check all pin of output connector(6ea) by using Black probe
If DMM display value as the below,there is no problem.
Normal : Forward (0.7V ~ 0.8V), Reverse( O.L)
If Y Drive have defect (short) , DMM display almost 0v.
※ DMM(Digital Multi Meter)
Check all pin on output connector by using Black probe
A16
2009. 2 . 1
A16
(Red Probe"-")
(Black Probe"+")
LGE Internal Use Only
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