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Upgrading Your System 4-41
Removable Media Devices
A CD-ROM drive is always mounted in bay A. Any SCSI removable media
device can be installed in peripheral bays B, and C. The SCSI devices should be
installed in the first available bay from the bottom (bay C).
Figure 4-44 illustrates the recommended removable media configuration. The
5 1/4-inch bays are intended to hold CD-ROM, tape, or other removable media
drives. SCSI drives in the 5 1/4-inch bays receive control signals from
channel A of the SCSI controller on the system I/O board.
When installing or replacing a 5 1/4-inch device consider the following:
!
The SCSI terminator of an installed 5 1/4-inch device must be set to OFF
and assigned a unique ID (refer to its device manual for setup operations).
!
When installing an internal auto-change DAT (DDS-3), use the power
branch cable attached to the device.
!
When installing an internal auto-change AIT, use the power relay cable
attached to the device.
!
Observe that when installing an internal DLT device the front panel of
the DLT will protrude approximately 1 cm from the front bezel, this will
not affect the operation.
!
When installing a Narrow-SCSI device use the 68 pin (Wide-SCSI cable
connector) to 50 pin (Narrow-SCSI cable connector) conversion adapter
provided with your system.
Note:
The SCSI termination resistors are located in the
5 1/4-inch device tray. All devices must have terminators
removed.
Hard disk drives cannot be installed in a 5 1/4-inch external bay because the
drive generates EMI, is more susceptible to ESD, and does not have sufficient
cooling.
A 1.44 MB diskette drive is always mounted in bay D.