HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 75

Power supply, CAUTION

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2. Slide the speaker away from the three flanges and remove it from the chassis. Figure 4-10 Removing the speaker Power supply 1. Disconnect power from the system ( Pre-disassembly procedures on page 55), and remove the access panel (Access panel on page 60). Place the workstation on its side with the system board facing up. 2. Disconnect the power supply from the system board. CAUTION Be sure you can differentiate which power cable was disconnected from the 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 the PCI or PCI Express installation on page 75. 3. Disconnect the optical drives, diskette drive, hard drives, and graphics card (select models only) from the power supply. 4. Remove the four screws (1) from the back panel. 5. Slide the power supply toward the front, and lift up (2) to remove it from the chassis. ENWW Removing and replacing components 65

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2.
Slide the speaker away from the three flanges and remove it from the chassis.
Figure 4-10
Removing the speaker
Power supply
1.
Disconnect power from the system (
Pre-disassembly procedures
on page
55
), and remove the
access panel (
Access panel
on page
60
). Place the workstation on its side with the system board
facing up.
2.
Disconnect the power supply from the system board.
CAUTION
Be sure you can differentiate which power cable was disconnected from the
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 the
PCI or PCI Express installation
on page
75
.
3.
Disconnect the optical drives, diskette drive, hard drives, and graphics card (select models only)
from the power supply.
4.
Remove the four screws
(1)
from the back panel.
5.
Slide the power supply toward the front, and lift up
(2)
to remove it from the chassis.
ENWW
Removing and replacing components
65