LG RCT689H Service Manual page 122

System check.
Load tray without inserting disc.
YES
Does Tray operate normally?
YES
Does Pick-up move to
inside or outside?
YES
Does Pickup lens
move up/down?
YES
Does Laser turn on?
YES
After eject tray, Insert CD-ROM Disc
and check rotation.
YES
Does Disc rotate
continuously and the drive
recognize the disc?
YES
After eject the tray,
Insert DVD Disc and check rotation.
YES
Does Disc rotate
continuously and the drive
recognize the disc?
YES
After eject the tray,
Insert DVD+R/RW Disc and check rotation.
YES
Does Disc rotate
continuously and the drive
recognize the disc?
YES
OK
NO
Go to "Tray operating is abnormal"
NO
Go to "Sled operating is abnormal"
NO Go to "Focus Actuator
operating is abnormal"
NO
Go to "Laser operating is abnormal"
Go to "Recognition fail Case1
NO
(CD-ROM Disc)"
NO Go to "Recognition fail Case2
(DVD Disc)"
NO Go to "Recognition fail Case3
(Blank DVD+R/RW)"
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