Yamaha DVD-E600MK2, Руководство по обслуживанию

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DVD-E600MK2
13
DVD-E600MK2
B
C
Is signal
STBY (Pin 1 of MM1646)
high level ?
Check the STBY circuit
Is signal FMO
(Pin 5 of MM1646) more
than 1.4V ?
Are signals SL+
(Pin 11 of MM1646) & SL-
(Pin 12 of MM1646)
correct ?
Check the copper trace or cable
connected to the DVD
mechanism
Check the FMO circuit
No
No
Yes
No
Yes
Yes
No
Yes
Does
Optical Pick Up move to find
a disc ?
Has FOO
(Pin 3 of MM1646)
any signal?
1. Check the signal from
MT1389 to MM1646
2. Maybe MM1389 is not
working
Are signals F+
(Pin 14 of MM1646) & F-
(Pin 13 of MM1646)
correct ?
Are signals LDO1
(Pin 23 of MT1389) & LDO2
(Pin 22 of MT1389)
correct ?
Check the peripheral circuit of
MM1646
Check MM1646 and
peripheral circuit
Check the cable and circuit
between the DVD mechanism
and MM1646
No No
Yes
Yes
No
Yes
Does sled
automatically move to inside
when it is outside ?
When read
disc, is Laser on OK ?
No
Is voltage
of +L_V33 OK ?
Check connection circuit of
the DVD mechanism
Optical Pick Up may be
damaged
Check peripheral circuit of
MT1389
Check peripheral circuit of
two transistors (Ref 7106
& 7107)
Check peripheral circuit of
two transistors (Ref 7106
& 7107)
No
No
Yes
Yes Is a disc loaded ?
Yes
Laser off
No
Yes
MONO Board
Board Ref Name
MONO 7111 MM1646
MONO 7112 MT1389