Samsung PPM63M7FS Service Manual page 28

② abnormal Display(abnormal Image is on Screen.(except abnormality in Sustain or address)
► abnormal Display is related with Y-MaIN, X-MaIN, logic Main and so on.
This page shows you how to check the boards, and the following pages show you how to find the defective board.
Check several points
F5001 for VDD
F5002 for Vs
F5004 for VCC
F5005 for OUT_L
Q5009~Q5021
Samsung Electronics
[ Logic Main ]
Observation of
Check necessary points
abnormal display
[ Logic Main ]
LED Blinks
( action of Vsync )
Regular NO
abnormal
pattern
YES
Replace the Board
[ Y-MAIN ]
OPEN
FUSE Replace the Board
OK
SHORT
FET Replace the Board
OK
Y-MAIN
Normal State
Abnormal
Display
[ Y-MAIN ] [ X-MAIN ]
Check necessary points
Logic Main
Normal State
Replace the PDP
[ X-MAIN ]
Check several points
F4001 for VCC
F4002 for Vs
FUSE
F4004 for VDD
F4005 for Ve
OK
Q4002~Q4003
FET
Q4011~Q4016
OK
X-MAIN
Normal State
Troubleshooting
OPEN
Replace the Board
SHORT
Replace the Board
4-7