LG HT356SD - Page 18

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Check connections between
MT1389L and pick-up head.
Check the related circuit on
MT1389L CD_DVDCT.
Check the related circuit on
MT1389L.
Check the TRACK connection
on MT1389L and motor driver.
Check the tracking control AMP
circuit on motor driver.
NO
NO
YES
YES
YES
Check CD_DVDCT connection
between AM5890 and
MT1389L.
Check cable connection
on pick-up head.
YES
YES
Proper
signals on A, B, C,
D of MT1389L.
NO
Proper
CD_DVDCT signal on
MT1389L.
Focus on ok?
NO
Disc Playback?
NO
NO
NO
NO
YES
Proper
CD_DVDCT signal on
MT1389L.
YES
Proper
TRACK signal
on MT1389L.
YES
T+ & T- output
properly?
Track On OK?
D
YES
E
Check RF signal waveform.