Sony CD-R Drive Unit CDU948S - Manual (Page 11)

11
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.
Installing the Drive Unit into the Computer
N o t e s :
• The upper row of pins (without KEY position) is ground.
• ID SELECT, PREVENT/ALLOW, and TEST MODE are recog-
nized when the power supply is turned on or SCSI bus 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.
Jumper
DEVICE
TYPE
ID SELECT
ID number
0
1
2
3
4
5
6
7
Jumper settings
0
OFF
ON
OFF
ON
OFF
ON
OFF
ON
1
OFF
OFF
ON
ON
OFF
OFF
ON
ON
2
OFF
OFF
OFF
OFF
ON
ON
ON
ON
KEY
PREVENT/
ALLOW
TEST MODE
Used to prevent the SCSI bus interface connector
from being plugged in upside down.
ON: Allows insert and removal of a CD caddy
with the eject button and the eject
command.
OFF: Prevents insert and removal of a CD
caddy with the eject button or an eject
command.
ON: Enables test mode.
OFF: Enables normal operation.
Function
The setting of this jumper determines whether the
SCSI device type code in the inquiry data is WO
or CD-ROM.
ON: WORM
OFF: CD-ROM
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.
Factory settings