LG RH4820W, Service Manual

Page: 60 / 150

3-80
System Check
Load tray without inserting disc.
Go to “Tray operating is abnormal”
Go to “Sled operating is abnormal”
Go to “Laser operating is abnormal”
Go to “Focus Actuator operating is
abnormal”
Go to “Recognition fail Case1”
(CD-ROM Disc)
Go to “Recognition fail Case2”
(DVD Disc)
Go to “Recognition fail Case3”
(DVD ± R/RW Disc)
Does tray operate normally?
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
Does pick-up move to inside?
Does laser turn on?
After eject tray, insert DVD Disc
and check rotation.
After eject tray, Insert DVD ± R/RW Disc
and check rotation
OK
Does disc rotate
continuously and the drive recognize
the disc?
Does disc rotate
continuously and the drive recognize
the disc?
Does disc rotate
continuously and the drive recognize
the disc?
After eject tray, Insert CD-ROM Disc
and check rotation
Does pick-up lens move
up/down?