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