Read LG 42PQ301R-ZB (CHASSIS:PP91B) Service Manual online
Making
Revision
2009. 2 . 1
A16
PDP TV
Symptom
A. Picture Problem
Y Drive B/D Checking method
Repair Process-Reference data
A16
▶ 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.
ÎNormal : Forward (0.7V ~ 0.8V), Reverse( O.L)
If Y Drive have defect (short) , DMM display almost 0v.
※ DMM(Digital Multi Meter)
< In case that Y Drive is ok >
. Diode
- Forward: 0.7V
- Reverse: O.L
- Reverse: O.L
◆ Y Drive board
Input
connecter
Scan IC
(Red Probe”-”)
(Black Probe”+”)
Output connecter
Check all pin on output connector by using Black probe
42G2
50G2
Input
connecter
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