Philips DVD625 Service Manual page 21

Diagnostic Software, Trouble Shooting and Test Instructions
A
If will the tray
close automatically when
it is open
YES
Sledge move to
inside automatically when
it is in outside?
Y
NO disc on tray
Have
the Loader action
to find disc
Y
B
Signal
TROUT and TRIN is
N
correct?
Y
Signal
TRCLOSE & TROPEN
correct?
Y
Signal
LOAD+ & LOAD-
correct?
Y
Check the circuit to
connect LOADER
Signal
STBY on driver IC is high
N
level?
Y
Signal
FMSO is more than
1.4V?
Yes
Signal
SL+ & SL-
correct?
Y
Check the copper trace or
cable connect to LOAD ER
Have
FOSO on driver IC
N
any signal ?
Y
Signal
F+ & F-
correct?
Y
Check the cable and
circuit between Loader and
Motor driver (BA5954)
DVD625 /0x1
Check the position-switch
N
in LOADER
Check the circuit between
N MT1336 and driver IC
(item7603)
Check Motor driver IC
N
(item7603) and peripheral
Check the circuit related
N
with STBY
Check the circuit related
N
with FMSO
No Check Motor Driver
1. Check the signal from
MT1379 to Motor Drive r ;
N
2. Maybe MT1379 is n ot
work
Check the peripheral
N
circuit of Motor driv
CL 36532022_006.eps
5. EN 21
er
190303