Philips DVD727K Service Manual page 27

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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
N TROUT and TRIN is
correct?
Y
Signal
TRCLOSE & TROPEN
correct?
Y
Signal
LOAD+ & LOAD-
correct?
Y
Check the circuit to
connect LOADER
Signal
N STBY on driver IC is high
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
N FOSO on driver IC
any signal ?
Y
Signal
F+ & F-
correct?
Y
Check the cable and
circuit between Loader and
Motor driver (BA5954)
27
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
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