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QQ
3 7 63 1515 0
Does sled
automatically move to inside
when it is outside ?
Optical Pick Up move to find
TE
L 13942296513
When read
disc, is Laser on OK ?
www
Is a disc loaded ?
.
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B
No
Yes
Does
No
a disc ?
Yes
No
Yes
No
x
ao
y
Yes
i
C
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8
Is signal
STBY (Pin 1 of MM1646)
high level ?
Yes
Is signal FMO
(Pin 5 of MM1646) more
than 1.4V ?
Yes
Are signals SL+
(Pin 11 of MM1646) & SL-
(Pin 12 of MM1646)
correct ?
Yes
Check the copper trace or cable
connected to the DVD
mechanism
Has FOO
(Pin 3 of MM1646)
any signal?
Q Q
3
6 7
1 3
Yes
Are signals F+
(Pin 14 of MM1646) & F-
(Pin 13 of MM1646)
correct ?
Yes
Check the cable and circuit
between the DVD mechanism
and MM1646
Are signals LDO1
(Pin 23 of MT1389) & LDO2
(Pin 22 of MT1389)
correct ?
Yes
Is voltage
of +L_V33 OK ?
Laser off
Yes
u163
.
DVD-S657/DV-S5860
2 9
9 4
2 8
No
Check the STBY circuit
No
Check the FMO circuit
No
Check MM1646 and
peripheral circuit
1. Check the signal from
No
MT1389 to MM1646
2. Maybe MM1389 is not
working
1 5
0 5
8
2 9
9 4
Check the peripheral circuit of
No
MM1646
Check peripheral circuit of
MT1389
No
Check peripheral circuit of
two transistors (Ref 7106
& 7107)
Check peripheral circuit of
No
two transistors (Ref 7106
& 7107)
Check connection circuit of
m
the DVD mechanism
Optical Pick Up may be
co
damaged
Board
Ref
MONO
7111
MONO
7112
9 9
2 8
9 9
Name
MM1646
MT1389
15
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