Opening The Computer - Sony CDU924S User Manual

Remove the jumper to set to OFF, and install the jumper to set to ON.
The recommended jumper is AMP* Shunts (14227-1), JAE** Short
Socket (PS-2SH4-1) or equivalent.
The following table shows the function of each jumper.
Jumper Function
DEVICE The setting of this jumper determines whether the
TYPE SCSI device type code in the inquiry data is WO
or CD-ROM.
ON:
OFF: CD-ROM
ID SELECT Assign the drive unit's ID number by setting these
jumpers to ON or OFF. Do not assign the same
number as one used for other SCSI device.
ID number
KEY Used to prevent the SCSI bus interface connector
from being plugged in upside down.
PREVENT/ ON:
ALLOW
OFF: Prevents insert and removal of a CD
TEST MODE ON:
OFF: Enables normal operation.
Notes:
The upper row of pins is ground.
ID SELECT, PREVENT/ALLOW, and TEST MODE are
recognized when the power supply is turned on or SCSI is reset.
TEST MODE is used exclusively for the factory testing. Do not set
TEST MODE to ON. Doing so may cause an unexpected result.
* AMP is a registered trademark of AMP, Inc.
** JAE is a registered trademark of Japan Aviation Electronics Industry, Ltd.
12 Installing the Drive Unit into the Computer
WORM
Jumper settings
0 1 2
0 OFF OFF OFF
1 ON OFF OFF
2 OFF ON OFF
3 ON ON OFF
OFF
4 OFF ON
5 ON OFF ON
6 OFF ON ON
ON
7 ON ON
Allows insert and removal of a CD caddy
with the eject button and the eject
command.
caddy with the eject button or an eject
command.
Enables test mode.
Factory settings

Opening the Computer

1
If your computer has its rear side covered by a plastic panel attached
with plastic hook pad, pull it off.
2
Remove the cover mounting screws.
3
Remove the cover of the computer.
Screws
Installing the Drive Unit into the Computer 13