System Board; Removing The System Board - HP xw8400 Service And Technical Reference Manual

System board

Removing the system board

1. Disconnect power from the system (
access panel
facing up. Remove all expansion boards, graphics cards
on page
remove the system/memory fan assembly
2. Disconnect all cables from the system board.
CAUTION
PCI Express x16 graphics card and which power cable was disconnected from the system
board. These two cables look similar. The PCI Express power cable has a black connector
and the power cable has a white connector. When power is present, NEVER connect the
PCI Express power cable to the system board. If you do so, the system board can be
damaged and your warranty voided. To see a picture of the PCI Express cable and where
it must be connected, see
NOTE
board. See
3. Slide the system board forward (1) to disengage the metal mounting standoffs from the chassis.
CAUTION
screws are permanently secured and are not removable.
4. Lift the system board out (2) of the chassis, being careful not to damage the cables and rear panel
connectors. You can lift the board by the rear audio connector and the 2 x 4 power connector.
Figure 4-50
92 Chapter 4 Removal and replacement procedures
(Access panel on page
72), and the CPU heatsink
Be sure you can differentiate which power cable was disconnected from the
Make note of the cable connections before disconnecting them from the system
Power connections to drives on page
Do not attempt to remove the eight system board mounting screws. These
Removing the system board
Pre-disassembly procedures on page
58). Place the workstation on its side with the system board
(Processor heatsink on page
(Power supply on page
PCI or PCI Express installation on page
53), and remove the
(Removing PCI or PCI Express cards
86). If an airflow duct is installed,
63).
73.
76for more information.
ENWW