Philips DVD625, Service Manual, Page: 21 / 43

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