Tray Operating Is Abnormal - LG HB954TB Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

3. TRAY OPERATING IS ABNORMAL

Tray operating is abnormal
Tray open doesn't work.
YES
Is there tray
control signal input?
(LIC201 Pin41)
YES
Is there tray
drive voltage output?
(LIC201 Pin27,28)
YES
Is there tray
drive voltage output?
(Loading Motor)
YES
Check the loading motor
and front loading mechanism.
Is there Tray
NO
control signal output?
(LIC501 Pin55)
YES
Check the connection from
LIC501 Pin55. to LIC201 Pin4.
• Check the serial flash operation.
• Check the SATA communication between
B/end MPEG Chip.
• Go to reset or power check.
NO
Check the LIC201
NO
Check the connector LPF301
and FFC cable connection.
4-4
NO