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2.2.2 Disk Enclosure (DE)
13.
Disconnect the two wires from 0 ETB2 (9.1
and 13.7 megabytes only)
g .
CAUTION
When removing the DE, do not drop it
Removal
on the gate stop.
Note:
If possible, before removing the disk enclo-
sure, initialize the disk to remove customer data.
I
DANGER
The disk enclosure weighs 27 I bs (12.5 kg). Clear
a space for the disk enclosure before removing it
from the machine.
CAUTION
Do not rotate the disk spindle counterclockwise;
head damage can occur.
1.
Turn power off at the operator control
panel. After power is sequenced down,
turn the mainline power off at the back
of the machine.
2.
Unclip the disk enclosure card socket cover
II
by gently pressing the top of the cover.
3.
Release the cable straps
B .
4.
Note the sockets, the cards and cables are
plugged into, and remove the cards and
cables from the disk enclosure card sockets.
5.
Lnck the actuator with the actuator lock
1m
by moving the handle to ON.
6.
Remove the helt guard by loosening the
two screws
II
and lifting it off.
7.
Loosen the two screws
m
that hold the
spindle locking arm and siide the locking
arm toward the disk spindle.
8.
Turn the motor pulley clockwise until the
stud on the disk spindle sits in the slot in
the locking arm.
9.
Tighten the screws on the spindle locking
arm.
10.
Move the motor toward the DE to release
the tension on the belt, and remove the
beltB.
11.
Disconnect the disk speed transducer at
DETB 1
Ii -
terminal 7 (black wire) and
terminal 8 (white wire).
12.
Unscrew the transducer cable clamp.
14.
Disconnect the DE ground wire
m .
15.
Make sure the DE holding clip
13
is
engaged.
16.
Remove three nuts and washers
m .
17.
Go to the front of the machine. Lift
the DE holding clip
13.
Note the
three DE locating guides
II;
you must
use them when you replace the DE.
18.
Ease the disk enclosure away from the
subframe.
19.
Stand the disk enclosure on its two
mounting studs.
r - -_ _
~
Front
Back View
II
2-12
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