Yamaha DVD-S540 Service Manual page 18

DVD-S540/DV-S5650
QQ
3 7 63 1515 0
B
When read disc,
Laser on OK ?
Yes
Load a disc ?
Yes
Focus on OK ?
TE
L 13942296513
Yes
Disc ID correct ?
Yes
Spindle on OK ?
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No
LDO1 and LDO2 are
TP22 &TP24
No
Laser off
No
on pins A B C D E F
of MT1336E
Signal FEO
(pin 18 of MT1336E)
Check the circuit from
Pin18 of MT1336E to Pin 205
of MT1379BE
No
Pin 19 (RFL) of MT1336E
Check the circuit from
Pin 19 of MT1336E to Pin 206
of MT1379BE
No
(pin 18 of MT1379BE)
Signal SP+
(Pin 11 of BA5954) & SP-
(Pin 12 of BA5954)
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Check the connection
between spindle driver and
BA5954
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2 9
8
Signal
No
normal ?
Yes
Voltage of
No
OK ?
Yes
Any signal
No
Yes
No
correct ?
Q Q
3 6 7 1 3
Yes
Signal of
No
normal ?
Yes
DMSO
No
normal ?
Yes
No
correct ?
Yes
.
9 4 2 8
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)
Check the circuit to
connect DVD mechanism
or Optical Pick Up maybe damaged
Check the circuit between
Optical Pick Up and MT1336E
Check the peripheral
circuit of MT1336E
1 5 0 5 8 2 9 9 4
Check the peripheral
circuit of MT1336E and
itself.
Check MT1379BE and its
peripheral circuit.
Check BA5954 (motor
m
driver) and its peripheral
circuit
co
Board Ref Name
MONO 7602 MT1336E
MONO 7603 BA5954
MONO 7606 MT1379BE
9 9
2 8 9 9