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- 3-7 -
YES
NO
YES
YES
D
NO
NO
NO
YES
NO
E
YES
Normal TEO Signal on
MT1389?
Check the related
circuit on MT1389
Track On OK?
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.
Disc is play ?
Check RFO & RFLVL signal waveform.
NO NO
YES
YES
YES
Focus ON OK?
Proper signals on
A,B,C,D of MT1389
Check connections between
MT1389 and pick-up head.
Check FEO signal
on MT1389
Check FOSO signal on MT1389
Check the FOSO connection on
MT1389 and motor driver.
YES
NO
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