Yamaha DVD-E600, Service Manual

Page: 14 / 40

14
DVD-E600
DVD-E600
B
When read disc,
is Laser on OK ?
No
Signal
LDO1 and LDO2 are
normal ?
Voltage of
TP22 &TP24
OK ?
Check the circuit to
connect DVD mechanism
or Optical Pick Up maybe damaged
Check the peripheral
circuit of MT1336E
Check the peripheral
circuit of two transistor
(Ref 7620 & 7621)
Check the peripheral
circuit of two transistor
(Ref 7620 & 7621)
No
No
Yes
Yes Is a disk loaded ?
Yes
Laser off
No
Is Focus on OK ?
Yes
No
Signal FEO
(pin 18 of MT1336E)
correct ?
Check the circuit from
Pin18 of MT1336E to Pin 205
of MT1379BE
Check the circuit between
Optical Pick Up and MT1336E
Check the peripheral
circuit of MT1336E
No
No
Yes
Yes
Is Any signal
on pins A B C D E F
of MT1336E
Is Disc ID correct ?
Yes
No
Check the circuit from
Pin 19 of MT1336E to Pin 206
of MT1379BE
Check the peripheral
circuit of MT1336E and
itself.
No
Is Signal of
Pin 19 (RFL) of MT1336E
normal ?
Yes
Is Spindle on OK ?
No
Are Signals SP+
(Pin 11 of BA5954) & SP-
(Pin 12 of BA5954)
correct ?
Check the connection
between spindle driver and
BA5954
Check BA5954 (motor
driver) and its peripheral
circuit
No
No
Yes
Yes
Is DMSO
(pin 18 of MT1379BE)
normal ?
Yes
Check MT1379BE and its
peripheral circuit.
C
Board Ref Name
MONO 7602 MT1336E
MONO 7603 BA5954
MONO 7606 MT1379BE
MONO Board