LG DP450P Service Manual

3-16
MAIN ELECTRICAL TROUBLESHOOTING GUIDE
A
B
Check the related circuit
on MT1389 FEO sugnal.
Check the TRSO connection
on MT1389 and motor dirver.
Check the tracking control
amp circuit on motor driver.
Check connections between
MT1389 and pick-up head.
Check the related circuit
on MT1389
Check IC(U401)
Check cable connection on
pick-up head.
Check RF signal waveform.
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
Focus on OK.
Track on OK.
Disc is play?
Proper FEO signal
on MT1389.
Properly TRSO
signal on MT1389.
T+ & Toutput
properly.
Proper
signals on A, B, C, D
of MT1389
Proper FEO signal
on MT1389.

LG DP450P Specifications

General

Brand	LG
Model	DP450P
Category	Portable DVD Player
Language	English