16
DVD-S540/DV-S5650
DVD-S540
DV-S5650
A
Does the tray
automatically close when
it is open?
Signal TROUT
(Pin 48 of MT1336E) and
TRIN (Pin 47 of MT1336E)
is correct ?
Signal
TRCLOSE & TROPEN
correct ?
Signal
LOAD+ & LOAD-
correct ?
Check the position-switch
on DVD mechanism
Check the circuit between
MT1336E and BA5954
Check BA5954 and peripheral
No
No
No
Yes
Yes
No
Yes
Signal
STBY (Pin 28 of BA5954) is
high level ?
Check the STBY circuit
Signal FMSO
(Pin 23 of BA5954) is more
than 1.4V ?
Signal SL+
(Pin 17 of BA5954) & SL-
(Pin 18 of BA5954)
correct ?
Check the copper trace or
cable connect to DVD mechanism
Check the FMSO circuit
Check the BA5954
No
No
Yes
No
Yes
Yes
No
Yes
Yes
the Optical Pick Up move to find
Has
FOSO (Pin 1 of BA5954)
any signal ?
1. Check the signal from
MT1379BE to BA5954;
2. Maybe MT1379BE is not
working
Signal
F+ (TP13) & F- (TP1)
correct ?
Check the peripheral
circuit of BA5954
Check the cable and
circuit between DVD mechanism
and BA5954
No
No
Yes
Yes
No
Yes
B
Check the circuits connecting
to the DVD mechanism
Board
Ref
Name
MONO
7602
MT1336E
MONO
7603
BA5954
MONO
7606
MT1379BE
Sled automatically
moves to inside when
it is in outside ?
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TEL 13942296513 QQ 376315150 892498299
