Philips DVD625K Service Manual page 23

5.2 Maintenance Flow chart
Confirm if AC is compatible with
the DVD-Player require
in all pins of item 1601 are
DV33 and V25
Display LOGO?
Start
Yes
Power on
Voltages
normal?
Yes
Are
normal?
Yes
No
Yes
A
Check the circuit of video
filter, amplifying and cables
with TV
Replace extainal
No PSU or a
transform need
1. Check Cable
No
2. Replace PSU if Mono PWB is not short, otherwise find out
where short first
Check regulator LD1117 (item7601) and diode 1N4002 (item6604)
No
and peripheral circuit
Is
Main Clock
normal?
Y
Is
reset signal
normal?
Y
Is
signal on FLASHl
normal?
Y
Is
signal on SDRAM
normal?
Y
Is input
signal of TV encoder
normal?
Y
Is output
signal of TV encoder
normal?
Y
N
1. Check oscillation circiut.
N
1. Check reset circiut.
N
Check peripheral circiut of FLASH
N
Check peripheral circiut of SDRAM
Check peripheral circiut of TV
N
Encoder
Check peripheral circiut of TV
N
Encoder