HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 74

Power button assembly and system speaker,

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5. Pull the bracket away from the front panel I/O device assembly. Figure 4-9 Removing the front panel I/O device assembly 6. Slide the front panel cables through the chassis and out the front of the unit. To replace the front panel I/O device assembly, reverse the previous steps. Power button assembly and system speaker The power button and the system speaker are part of the same assembly. To remove the power button: 1. Disconnect power from the system ( Pre-disassembly procedures on page 55) and remove the access panel (Access panel on page 60). 2. Remove the front bezel (Front bezel on page 61) and the front panel I/O device assembly (Front panel I/O device assembly on page 63). 3. Disconnect the power button assembly cable from the system board. 4. Disconnect the speaker wire and the hood sensor from the inline connectors on the power button assembly cable. 5. Remove the screw that secures the power button assembly to the chassis. 6. Pull the power button assembly away from the chassis. 7. Slide the power button assembly out from the front of the chassis. To remove the speaker: 1. Disconnect the speaker cable from the inline front panel I/O device assembly cable, if you have not already done so. 64 Chapter 4 Removal and replacement procedures ENWW

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5.
Pull the bracket away from the front panel I/O device assembly.
Figure 4-9
Removing the front panel I/O device assembly
6.
Slide the front panel cables through the chassis and out the front of the unit.
To replace the front panel I/O device assembly, reverse the previous steps.
Power button assembly and system speaker
The power button and the system speaker are part of the same assembly.
To remove the power button:
1.
Disconnect power from the system (
Pre-disassembly procedures
on page
55
) and remove the
access panel (
Access panel
on page
60
).
2.
Remove the front bezel (
Front bezel
on page
61
) and the front panel I/O device assembly (
Front
panel I/O device assembly
on page
63
).
3.
Disconnect the power button assembly cable from the system board.
4.
Disconnect the speaker wire and the hood sensor from the inline connectors on the power button
assembly cable.
5.
Remove the screw that secures the power button assembly to the chassis.
6.
Pull the power button assembly away from the chassis.
7.
Slide the power button assembly out from the front of the chassis.
To remove the speaker:
1.
Disconnect the speaker cable from the inline front panel I/O device assembly cable, if you have
not already done so.
64
Chapter 4
Removal and replacement procedures
ENWW