Processor Stack Boards; Processor Stack Clock Board - HP 9030 Service Manual

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.