LG DK676X - Page 18

3-8
D
Proper signals on A, B, C,
D of MT1389E
Focus ON OK?
Track On OK?
Disc is play ?
E
NO
NO
NO
YES
YES
YES
YES
YES
Check connections between
MT1389E and pick-up head.
NO
Check FEO signal on
MT1389E
YES
Check the FOSO
connection on MT1389E
and motor driver.
NO
Check FOSO signal on
MT1389E
YES
YES
Check the TRSO
connection on MT1389E
and motor dirver.
NO
Check the tracking control
amp circuit on motor driver.
NO
Normal TEO Signal on
MT1389E?
NO
Check the related circuit on
MT1389E
Properly TRSO signal on
MT1389E?
T+ & T- output properly?
Check cable connection on
pick-up head.
Check RFO & RFLVL signal
waveform.