HP 9030 Service Manual page 86

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.