B
When read disc,
Laser ON OK?
N
Signal
LDO1 and LDO2 is
normal?
Voltage of
TP22 &TP24
OK?
Check the circuit to
connect LOADER
OPU maybe damaged
Check the peripheral
circuit of MT1366
Check the peripheral
circuit of two transistor
(item 7620 & 7621)
Check the peripheral
circuit of two transistor
(item 7620 & 7621)
N
N
Y
Y
Load a disc?
Y
Laser off
N
Focus On ok?
Y
N
Signal FEO
(pin18 of MT1336)
correct?
Check the circuit from
Pin18 of MT1336 to Pin205
of MT1379
Check the circuit between
Loader and MT1336
Check the peripheral
circuit of MT1336
N
N
Y
Y
Any signal
on pins A B C D E F
of MT1366
Disc ID correct?
Y
N
Check the circuit from
Pin19 of MT1336 to Pin206
of MT1379
Check the peripheral
circuit of MT1336 and
itself.
N
Signal of
Pin 19 (RFL) of MT1336
normal?
Y
Spindle on OK?
N
Signal
SP+ & SP-
correct?
Check the connection
between spindle driver and
BA5945
Check BA5945 (motor
driver) and its peripheral
circuit
N
N
Y
Y
DMSO
(pin18 of MT1379)
normal?
Y
Check MT1379 and its
peripheral circuit.
C
28
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