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Repair Process-Reference data
PDP TV
Symptom
▣ Checking Method
① Check input voltages(5V of P105 / 18V of P2) at control
board.
② Check LED is on.
③ If LED doesn't work, check crystal X1 output.
④ Check 3.3V, 5V IC.
⑤ Check MCM at VS_DA by using digital multi meter.
③ Check Crystal(X1)
⑤ Check MCM
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Only for training and service purposes
A. Picture Problem
Control Board Checking Method(50R3)
② Check LED On
Check oscillation of Crystal
(Normal: 25 MHZ)
MCM Check point
(+)VS_DA / (-) GND
(Normal: 3.3V )
Making
Revision
④ Check IC ( IC53, IC51 )
IC53
P105_FL1,FL2(5V)
① Check Input voltage
A13
A13
IC51
5V
3.3V
3.3V
GND
P2(18V)
Pin14, 15
Pin 14,15 : 18V
LGE Internal Use Only
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