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No focus lock
Laser diode is on?
VNOTE : NEVER CHECK 'LASER DIODE
N
ON' STATE DIRECTLY WITH YOUR EYES
AND RECOGNIZE IT BY SIGNAL
INDICATED IN 'NO LASER DIODE ON' OF
THIS MANUAL.
Y
N
Check IC101 power input, soldering and
FE signals is outputted in IC101 16Pin?
Y
N
The below waveform is outputted in IC101
Check IC101 power input and soldering.
15Pin?
Y
Check IC201 power input and soldering.
Y
X201 oscillates?
Y
Check power source and initial state.
Refer to 'No laser diode on'
Replace IC101
R116 soldering.
17
Insert disc
N
The below waveform is outputted in IC201
Focus up/down?
Y
The below waveform is inputted in CN501
The below waveform is inputted in CN501
Pick-up connecting FPC is connected?
Replace Pick-up.
N
Refer to 'Check power source
and initial state'
42Pin?
Y
Y
N
17Pin?
Check IC501 power input, soldering and
R506, R507, R505, R201, C216 soldering.
Y
Y
14Pin?
N
Y
Y
N
Replace FPC.
Y
18
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