4-10
Assembly
Access
9.
Lift
stack
and
attached
lid
slightly, unplug fan cable from fan,
and
remove stack from box.
CAUTION
CAREFULLY HANDLE BOARDS
TO
AVOID DAMAGE FROM
ELECTROSTATIC
DISCHARGE OR OTHER CAUSES. HOLD
BY
EJECTORS OR SIDE EDGES ONLY. DO NOT TOUCH EDGE CON-
NECTOR CONTACTS ORBOARD PLANES. IMMEDIATELY PLACE
THE BOARDS
IN
ANTISTATIC BAGS OR ON ANTISTATIC SUR-
FACE.
10. Remove
all
boards by pulling out
on
ejectors to release the boards from the stack mother-
board. Then slide the boards out of the slot.
11. Remove
16
# 1 Pozidriv screws, 8 from the top of the case
and
8 from the bottom, that attach
the 4 card guides to the case,
and
remove the card
gUides.
12. Loosen two slotted captive screws that hold clock board to stack motherboard.
13. Disconnect clock board from processor stack motherboard at inline connector.
14.
Pull clock board straight out of motherboard and out of stack.
15. Remove four
# 1 Pozidriv screws, two at top
and
two at bottom, that attach motherboard to
case. Do not remove the two middle screws. They attach the motherboard supports to the
motherboard.
16. Remove eight
# 1 Pozidriv screws, four at bottom
and
four at back, that attach the connector
tie
bar
to the case.
17. Remove the motherboard
and
its
attached supports
and
connector tie
bar
from the case.
18. Remove the connector tie bar
and
motherboard supports from the motherboard. Retain for
installation
on
the replacement motherboard.
Reassembly Notes
Attach the connector tie
bar
to the case before attaching the mother-
board to the case. This prevents connector misalignment.
The four card gUides are identical; however, they must
be
replaced with
flat
ends
up
so the slots
and
connectors line up.
The clock
board
connector
and
mating motherboard connector are not
keyed; however, the clock board screws
and
motherboard holes
do
not
align unless proper connection
is
made.
When installing boards, hold by ejectors
and
use side edge to move air
controller
out
of the way
and
onto the top of the board.
Insert
board
firmly in stack motherboard
and
push ejectors in to lock
it
in
place.
Firmly tighten screws
and
thumbscrews
on
stack
door
and
RFI
shield to
prevent
RFI
radiation.
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