HP xw3400 HP xw3400 Workstation - Service and Technical Reference Guide - Page 67

Cleaning the mouse, Service considerations, Power supply fan, Tools and software requirements, Screws

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Cleaning the mouse Before cleaning the mouse, ensure that the power to the workstation is turned off. ● Clean the mouse ball by first removing the retaining plate and the ball from the housing. Pull out any debris from the ball socket and wipe the ball with a clean, dry cloth before reassembly. ● To clean the mouse body, follow the procedures in Cleaning the workstation case on page 55. Service considerations Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the workstation. Power supply fan The power supply fan is a variable-speed fan based on the temperature in the power supply. CAUTION: The cooling fan is always on when the workstation is in the "On" mode. The cooling fan is off when the workstation is in "Standby," "Suspend," or "Off" modes. You must disconnect the power cord from the power source before opening the workstation to prevent system board or component damage. Tools and software requirements To service the workstation, you need the following: ● Torx T-15 screwdriver (HP screwdriver with bits, PN 161946-001) ● Torx T-15 screwdriver with small diameter shank (for certain front bezel removal) ● Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver) ● Phillips #2 screwdriver ● Diagnostics software ● HP tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or HP tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002) Screws The screws used in the workstation are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations. CAUTION: Metric screws have a black finish. U.S. screws have a silver finish and are used on hard drives only. CAUTION: As each subassembly is removed from the workstation, it should be placed away from the work area to prevent damage. ENWW Service considerations 57

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Cleaning the mouse
Before cleaning the mouse, ensure that the power to the workstation is turned off.
●
Clean the mouse ball by first removing the retaining plate and the ball from the housing. Pull out any
debris from the ball socket and wipe the ball with a clean, dry cloth before reassembly.
●
To clean the mouse body, follow the procedures in
Cleaning the workstation case
on page
55
.
Service considerations
Listed below are some of the considerations that you should keep in mind during the disassembly and
assembly of the workstation.
Power supply fan
The power supply fan is a variable-speed fan based on the temperature in the power supply.
CAUTION:
The cooling fan is always on when the workstation is in the “On” mode. The cooling fan is
off when the workstation is in “Standby,” “Suspend,” or “Off” modes.
You must disconnect the power cord from the power source before opening the workstation to prevent
system board or component damage.
Tools and software requirements
To service the workstation, you need the following:
●
Torx T-15 screwdriver (HP screwdriver with bits, PN 161946-001)
●
Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)
●
Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
●
Phillips #2 screwdriver
●
Diagnostics software
●
HP tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or HP tamper-resistant
bits (Smart Cover FailSafe Key, PN 166527-002)
Screws
The screws used in the workstation are not interchangeable. They may have standard or metric threads
and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage
the unit. HP strongly recommends that all screws removed during disassembly be kept with the part that
was removed, then returned to their proper locations.
CAUTION:
Metric screws have a black finish. U.S. screws have a silver finish and are used on hard
drives only.
CAUTION:
As each subassembly is removed from the workstation, it should be placed away from the
work area to prevent damage.
ENWW
Service considerations
57