NEC LS2400, User Manual, Page: 102 / 186

4-30 Upgrading Your System
!
Your system includes two Symbios SYM53C875 independent SCSI
controllers. Controller A attaches to a 68-pin 16-bit (wide) SCSI
connector interface capable of supporting a maximum of four 1-inch
high SCSI Ultra-wide hard disk drives or three 1.6-inch high SCSI
Ultra-wide hard disk drives. Controller B attaches to a 50-pin 8-bit
(narrow) SCSI connector interface capable of supporting three 5.25-
inch removable SCSI media devices.
!
The tape drive SCSI address assignment is 2.
!
The SCSI termination resistors must be installed in the last SCSI
drive of the daisy chain cabling. If the SCSI tape is your only SCSI
device on the SCSI controller B, termination must be installed in the
tape drive.
Installing a 5.25-Inch Device
!
CAUTION
CD-ROM devices contain a laser system and are classified as
CLASS 1 LASER PRODUCTS. To use these devices,
thoroughly read the documentation provided by the CD-ROM
manufacturer, and keep the documentation for future
reference. In case of any trouble with a CD-ROM, please
contact your nearest service representative. To prevent direct
exposure to the laser beam, do not try to open the enclosure.
Use of controls or adjustments or performance of procedures
other than those specified in the CD-ROM manufacturer's
documentation may result in hazardous radiation exposure
1. Power off the system and remove the side panels as described earlier
in this chapter.
2.
Remove the front panel, EMI shield, and filler panel covering the bay
into which you are installing a peripheral device as described earlier
in this chapter.
!
CAUTION
Observe static precautions. Use an antistatic wrist strap.
3. Remove the device from its protective wrapper and place it on an
antistatic surface. Record the drive model and serial number in the
equipment log.
4.
Set any drive jumpers or switches before you install the drive. See
the documentation that comes with the device for jumper or switch
information.