Replacing The Processor; System Board; Removing The System Board - HP xw9400 Service And Technical Reference Manual

Replacing the processor

CAUTION
pins are extremely fragile. Damaged sockets will require a board replacement.
Lift the processor out of the socket— do not slide the processor on the socket.
When installing a processor, align the dimples on the side of the processor with the notches in
the socket.
1. Disconnect power from the system (
panel (Access panel on page
and the processor
2. Raise the processor socket handle fully.
3. If necessary, remove the bypass board from the socket. Align the notches in the processor base
with the tabs on the socket. Seat the processor into the socket. Ensure that the underside of the
processor is level with the top of the processor socket. Close the processor cover plate. Lightly
press down on the processor cover plate while closing the socket lever.
Figure 4-52

System board

Removing the system board

1. Disconnect power from the system (
access panel
facing up. Remove all expansion boards, external cables, graphics cards
Express cards on page
system and memory fan assemblies.
2. Disconnect all cables from the system board.
NOTE
board. See
96 Chapter 4 Removal and replacement procedures
Use extreme care when installing or removing a processor. The exposed socket
Pre-disassembly procedures on page
61), the CPU heatsink
(Removing the processor on page
Seating the processor
(Access panel on page
76), and the CPU heatsink
Make note of the cable connections before disconnecting them from the system
Power connections to drives on page
(Removing the CPU heatsink on page
94).
Pre-disassembly procedures on page
61). Place the workstation on its side with the system board
(Processor heatsink on page
81for more information.
55). Remove the access
91),
55), and remove the
(Removing PCI or PCI
91). Remove the
ENWW