Front Loading Mechanism - LG TL-AT130M Service Manual

MECHANISM TROUBLESHOOTING GUIDE

2. Front Loading Mechanism

A.
Cassette cannot be inserted.
Does the Lever Assembly
Switch work?
YES
Is the Vcc of Main P.C.Board
5V?
NO
YES
Is the voltage between cassette
switch and GND on Main
P.C.Board 5V??
NO
YES
Check the Mode switch location
and syscon circuit.
B.
Cassette does not eject.
Does the L/D Motor rotate in reverse?
YES
Does the Lever Assembly Switch work?
YES
Does the Arm Assembly F/L work normally?
YES
Does the Opener Door work?
NO
Is the Lever Assembly Switch
Spring damaged or omitted?
YES
Does the CST IN Switch work
normally?
YES
Check the syscon circuit.
Check the power circuit.
Is there a short circuit between cassette
switch and GND on main P.C.Board?
YES
Remove the short circuit part or
Replace the main P.C.Board.
NO
NO
NO
NO
4-26
NO
NO
NO
Check the L/D Motor or Drive IC.
Replace the Lever Assembly Switch.
Replace the Arm Assembly F/L.
Replace the Opener Door.
Replace or add the Lever
Assembly Switch Spring.
Replace the CST IN Switch.
Replace the CST IN Switch.