LG LGXBR342 Service Manual page 76

Tray operating is abnormal
Tray open doesn 't work.
Is the
Input voltage 0V at IC302
pin 60 when push the
EJECT SW?
YES
Is there tray
control signal input?
(IC105 pin26)
YES
Is there tray
drive voltage output?
(IC105 pin 49,50)
YES
•Check the connector (CN104).
NO
•Check the connection of IC302 pin 60.
•Replace the EJECT SW.
•Check the connection of IC103 pin 19.
NO •Replace the IC103.
•Check the communication line between
IC103 and IC302.
When CN104 is open,
NO
Is there tray drive signal
3-100
output?
YES
•Replace the IC105.
NO