Advertisement
DVD-S30
QQ
3 7 63 1515 0
A
Does sled
automatically move
to inside when it is
outside ?
Does Optical
Pick Up move to find
a disc ?
TE
L 13942296513
When read disc,
is Laser on OK ?
www
Is a disc loaded ?
.
B
18
http://www.xiaoyu163.com
Is signal
No
STBY (pin 28 of AM5888)
high level ?
Is signal
FMSO (pin 23 of AM5888)
more than 1.4V ?
Yes
Are signals
SP+ (pin 2 of 1201)
& SP- (pin 1 of 1201)
correct ?
Check the copper trace or cable
connected to the DVD
mechanism.
Does signal
No
FOSO (pin1 of AM5888)
have any signal ?
Are signals
F+ (pin 14 of AM5888)
& F- (pin 13 of AM5888)
correct ?
Yes
Check the cable and circuit
between the DVD mechanism
and AM5888.
Are signal
No
LDO1 (pin 23 of MT1389)
& LDO2 (pin 22 of T1389)
correct ?
Is voltage
Yes
of LDO_AV33 OK ?
No
Laser off
x
ao
y
i
http://www.xiaoyu163.com
8
No
Check the STBY circuit.
Yes
No
Check the FMSO circuit.
Yes
No
Check AM5888 and peripheral circuit.
Yes
No
Check the signal from MT1389 to AM5888.
It is possible that MT1389 is not working.
Q Q
3
6 7
1 3
Yes
No
Check AM5888 and peripheral circuit.
Yes
No
Check AM5888 and peripheral circuit.
Yes
No
Check peripheral circuit of two transistor
(Ref 7204 & 7205)
Yes
Check connection circuit of the DVD
mechanism.
Optical Pick Up can be damaged.
u163
.
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
Advertisement
