Sony CDU711 - Manual (Page 24)

24
How to Use the Disc Locks
The disc tray has four disc locks that prevent the disc from falling
when the drive is set up in vertical position.
Note:
When the drive is used in horizontal position, you do not need to
lock the disc.
■ Locking and unlocking
All of the four locks are set in the unlocked position (facing
outwar d) when the drive is shipped fr
om the factor y. To set the loc k
in the locked position, turn it with your fingers until you hear a click
so that it faces inward.
Disc locks
locked unlocked
to lock to unlock
Operating the Drive