LG DK589XB Service Manual page 18

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