LG DS563X, Service Manual, Page: 18 / 48

3-8
D
Proper signals on A, B, C,
D of MT1389C
Focus ON OK?
Track On OK?
Disc is play ?
E
NO
NO
NO
YES
YES
YES
YES
YES
Check connections between
MT1389C and pick-up head.
NO
Check FEO signal on
MT1389C
YES
Check the FOSO
connection on MT1389C
and motor driver.
NO
Check FOSO signal on
MT1389C
YES
YES
Check the TRSO
connection on MT1389C
and motor dirver.
NO
Check the tracking control
amp circuit on motor
driver.
NO
Normal TEO Signal on
MT1389C?
NO
Check the related
circuit on MT1389C
Properly TRSO signal on
MT1389C?
T+ & T- output properly?
Check cable connection on
pick-up head.
Check RFO & RFLVL signal
waveform.