3-17
B.
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Focus ON OK?
Track On OK?
Disc is play?
E
Proper
signals on A, B, C,
D of MT1389
Check connections between
MT1389 and pick-up head.
Proper FEO signal
on MT1389?
Proper FEO signal
on MT1389?
Check the related circuit
on MT1389 FEO sugnal .
Check the related
circuit on MT1389
Properly TRSO signal
on MT1389?
T+ & T- output
properly?
Check the TRSO connection
on MT1389 and motor dirver.
Check the tracking control
amp circuit on motor driver.
Check cable connection on
pick-up head.
Check RF signal waveform.
Check IC500 IC
D
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