Motorola XR900 Series, Руководство пользователя, Страница: 52 / 60

3 1/2- or 5 1/4-Inch Drive Modules
4-9
4
3
1
/
2
-
or 5
1
/
4
-Inch Drive Modules
The SCSI peripheral expansion enclosure contains up to four half-
height storage devices. Two bays accommodate 3
1
/
2
-inch devices
only. The other two bays accommodate either 3
1
/
2
-inch or 5
1
/
4
-inch
devices.
The suggested procedure for removal and replacement of 3
1
/
2
- or
5
1
/
4
-inch drive modules is as follows:
Removal
1. Switch the power supply of the host system to
STANDBY
.
2. Disconnect the input power source from the XR900 chassis:
– If the power supply is an AC unit, unplug the power cord
from the AC outlet.
– If the power supply is a DC unit, turn off the –48Vdc
power source and unplug the DC connector from the
power supply input.
3. Remove the XR900 bezel, if installed.
4. While pressing the latch at the side of the drive carrier (Figure
5-4), move the module back and forth slightly to loosen the
backplane connection. Then carefully remove the module
from the chassis by pulling straight out.