4-8
AssembLy Access
Processor Stack Boards
1.
SET THE POWER SWITCH ON THE
REAR
PANEL TO THE
"0"
POSITION AND DIS-
CONNECT THE
AC
POWER CORD FROM THE
WALL
OUTLET.
2.
Remove the lower front panel (HP 9040) or the front panel (HP 9030).
3. From the front of the computer, remove the
RFI
shield by loosening the six thumbscrews.
4.
If a board
in
slots 4-12
is
being replaced, open stack door by loosening the two thumbscrews.
If a board
in
slots 1-3
is
being replaced, remove the stack door by loosening the two
thumbscrews
and
the two
#2
Pozidriv captive screws that attach the door to the stack.
CAUTION
CAREFULLY HANDLE BOARD TO PREVENT DAMAGE TO IT
FROM ELECTROSTATIC DISCHARGE
OR
OTHER CAUSES.
HOLD BY
EJECTORS
OR
SIDE
EDGES
ONLY.
DO
NOT TOUCH
EDGE CONNECTOR CONTACTS
OR
BOARD PLANES. IM-
MEDIATELY PLACE BOARD IN ANTISTATIC
BAG
OR
ON ANTI-
STATIC
SURFACE.
5. Pull out on board ejectors to release
it
from the stack motherboard and slide the board
out
of
the slot.
If lOP board
is
being removed, pull out
on
ejectors, slide board slightly out,
open
connector gate, remove ribbon cable connector,
and
then remove the board from stack.
Reassembly Notes
When installing board, hold by ejectors
and
use side edge of board 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.
Processor Stack Clock Board
1.
SET THE POWER SWITCH ON THE
REAR
PANEL TO THE
"0"
POSITION
AND
DIS-
CONNECT THE
AC
POWER CORD FROM THE
WALL
OUTLET.
2.
Remove the lower front panel (HP 9040) or the front panel (HP 9030).
3. From the front of the computer, remove the
RFI
shield by loosening the six thumbscrews.
4.
Loosen two captive thumbscrews
on
processor stack door and swing
door
open.
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