LG 50PT350 Service Manual page 57

Repair Process-Reference data
PDP TV
Symptom
① Check input voltages(5V, Va, Vs) at P203 connector.
② Check it is short or not between Vs and GND at P203 connector.
③ Check all of fuses open. (FS202)
④ Check voltage of diode , FET by using digital multi-meter.
▣ Measuring Method
▣ Specifications
Position Direction
D114,D118
HS101 Forward 0.35V ~ 0.45V
Reverse
D109,D110,D108,D111 Q104,Q113,Q114
0.35V ~ 0.45V
HS102 Forward
Reverse
A. Picture Problem
Z-Sus Board Checking Method(50R3)
FET Diode
Circuit No.
Q107, Q110 Q106, Q109
0.35V ~ 0.45V 0.35V ~ 0.45V
O.L. (Overload)
0.5V ~ 0.6V
O.L. (Overload)
Revision
P203
Q102,Q103
0.45V~0.55V
FS202
5V fuse
A9
Making 2010. 11. 16
ⓒ LG Electronics. Inc.2009
전자 - 6-2
A9
ZSUS board