LG CED-8042B Manual page 47

System Check.
Load tray without inserting disc.
Does Tray operate
YES
Does Pick-up move
YES
Does Lens move
YES
Does Laser turn on?
YES
After eject tray, Inset CD-ROM
Disc and reloading.
Does Spindle Motor stop?
NO
Is Disc rotating too fast?
NO
Does Disc rotate
slowly or stop?
NO
Is LOCK signal "H"?
(IC501 pin 119)
YES
After eject tray, Inset CD-R
Blank Disc and reloading.
Is Disc rotating too fast?
NO
Does Disc rotate slowly or stop?
NO
Is LOCK signal "H" ?
(IC501 pin 119)
YES
54
NO
normally?
NO
to inside?
NO
Up/Down?
NO
YES
YES
YES
NO
YES
YES
NO
OK
Go to "Tray operating is abnormal"
Go to "Sled Motor operating is
abnormal"
Go to "Focus Actuator operating is
abnormal"
Go to "Laser is abnormal"
Go to "Spindle Motor operating is
abnormal"
Go to "Spindle control is abnormal 1"
Go to "Disc recognition is abnormal"
Go to "Spindle control is abnormal 2"
Go to "Spindle control is abnormal 3"
Go to "Spindle control is abnormal 4"
Go to "Spindle control is abnormal 4"