Assembly Access
4-15
Winchester Fixed
Disc
Drive Controller Assembly
The Winchester Fixed Disc Drive Controller Assembly consists of an I/O card
and
a disc controller
mounted
together
and
interconnected by cables. The assembly must
be
removed from the compu-
ter as a unit. The
I/O card or disc controller can then
be
removed from the assembly for replace-
ment.
All
procedures follow.
To
remove
controller
assembly
from
computer:
1.
UNPLUG COMPUTER POWER CORD FROM
AC
OUTLET.
2.
Remove right side door as previously described.
3. Remove three
#2
Pozidriv screws from mass storage cover (Figure 4-12).
4.
Loosen two captive thumbscrews
on
I/O door (Figure 4-12)
and
swing
door
open, allowing
door
to rest in
open
position. Use flat-blade screwdriver to loosen thumbscrews.
5. Slide mass storage cover toward front of computer, disengaging cover from slot in front card
guide.
6.
Lift
mass storage cover with attached I/O door up
and
away from computer.
CAUTION
CAREFULLY HANDLE ASSEMBLY TO PREVENT DAMAGE FROM
ELECTROSTATIC DISCHARGE OR OTHER CAUSES.
HOLD
BY
EJECTORS
OR
SIDE EDGES ONLY. DO NOT TOUCH EDGE CON-
NECTOR CONTACTS
OR
CARD PLANES. IMMEDIATELY PLACE
ASSEMBLY
IN ANTISTATIC BAG OR ON ANTISTATIC SURFACE.
7.
Remove both cable connectors from controller assembly (Figure 4-14), unseat assembly
from
I/O backplane by pulling out
on
ejectors,
and
slide assembly
out
of slot.
EJECTOR
CABLE CONNECTORS
EJECTOR
Figure
4-14.
Removing Fixed Disc Drive Controller Assembly
Reassembly Note
Seat replacement controller assembly
firmly
in
110
backplane
and
push
ejectors
in
to lock card
in
place.
To Next Page
Loading...
