LG RCT689H Service Manual page 123

Tray operating is abnormal.
Tray open doesn't work.
YES
Is the input
voltage 0V at LIC201
pin49 when push the
EJECT SW?
YES
Is there Tray
control signal input?
(LIC301 pin20)
YES
Is there
Tray drive voltage
output? (LIC301
pin14, 15)
YES
Check the
connctor (LPF303)
NO
• Check the connction of LIC201 pin49.
• Check the connction of LIC201 pin70.
NO
• Replace the LIC201.
• Check the communication line
between LIC201.
When
NO
LPF303 is open, Is
there Tray drive signal
output?
YES
5-4
NO
Replace the LIC301.