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D
Focus ON OK?
YES
Track On OK?
YES
Disc is play ?
YES
E
NO
Proper signals on A, B, C,
D of MT1389D
YES
Check FEO signal on
MT1389D
YES
Check FOSO signal on
MT1389D
NO
Normal TEO Signal on
MT1389D?
YES
Properly TRSO signal on
MT1389D?
YES
T+ & T- output properly?
YES
Check cable connection on
pick-up head.
NO
Check RFO & RFLVL signal
waveform.
3-8
NO
Check connections between
MT1389D and pick-up head.
Check the FOSO connec-
NO
tion on MT1389D and
motor driver.
NO
Check the related
circuit on MT1389D
Check the TRSO
NO
connection on MT1389D
and motor dirver.
NO
Check the tracking control
amp circuit on motor driver.
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