Service manual

PDI-P23LCD SERVICE MANUAL
PAGE:
25
TROUBLE SHOOTING
15.Troble shooting
P803 (pin8~15) : 24V
(B/Light Vcc)
P803 (pin1) : 5V
(
B
/
L O
N
:5V
/
Off:0V
)
Replace LCD Panel.
Y
N
Check P303
(pin26~30) : 12V
Y
Check FET
Q804 (pin source)
24V
Replace the internal
SMPS power or
AC power
Replace
Q804
Check
IC805 (pin1) : 12V
IC805 (pin4) : 0V
Replace
IC805
Y
N
N
Y
N
Replace
IC801 / ZD804
15-1.No Raster