Philips DVP3000K Service Manual page 13

A l l out put vol t ages on t he pow er boar d i s 0V or devi at ed.
Al l out put vol t ages on
t he pow er boar d i s 0V or
devi at ed
Yes
C heck whet her
F1 i s bl own
N o
C heck w het her t her e i s
300V on C 4.
Yes
C heck w het her 100KH z
osci l l at i ng si gnal on
Pi n6 of U 1
Yes
C heck i f +5V, +3. 3v, +12V,
- 12V and - 24V ar e shor t .
Yes
C heck w het her t he com ponent s i n t he
shor t - ci r cui t vol t age ar e def ect ed or er oded.
4- 3
Yes
R epl ace F1
R epl ace C 4 i f D 1, D 2, D 3, D 4 ar e
N o
nor m al .
N o
C heck/ r epl ace U 1.
U 1( PI N 3 - R C w avef or m )
N o
C heck whet her U 1 ar e er oded.
Tr oubl e shoot i ng char t
U 1( PI N 8 - D r ai n w avef or m )