LG CED-8083B Service Manual page 9

Load tray without inserting disc.
Does Tray operate normally?
Does Pick-up move to inside?
Does Spindle Motor
rotate in a moment?
After eject tray, Inset CD-ROM Disc
continuously as Disc recognition is
After eject tray, Inset CD-R Blank Disc
continuously as Disc recognition is
50
System Check.
YES
YES
YES
Does Lens move
Up/Down?
YES
Does Laser turn on?
YES
and reloading.
Does Disc stop?
NO
Does Disc rotate
abnormal?
NO
and reloading.
Does Disc stop?
NO
Does Disc rotate
abnormal?
NO
OK
NO
Go to "Tray operating is abnormal"
NO
Go to "Sled operating is abnormal"
NO
Go to "Spindle operating is
abnormal"
NO
Go to "Focus Actuator operating is
abnormal"
NO
Go to "Laser is abnormal"
YES
Go to "Spindle control is abnormal 1"
YES
Go to "Spindle control is abnormal 2"
YES
Go to "Spindle control is abnormal3"
YES
Go to "Disc recognition is abnormal"