Philips DVD625K Service Manual page 25

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