3-6
Compaq Professional Workstation SP750 Maintenance and Service Guide
Cleaning the Monitor
■
Wipe the monitor screen with a clean cloth moistened with water or with a towelette
designed for cleaning monitors. Do not use sprays or aerosols directly on the screen, the
liquid may seep into the housing and damage a component. Never use solvents or
flammable liquids on the monitor.
■
To clean the monitor body follow the procedures in the “Cleaning the Computer Case”
section in this chapter.
Cleaning the Mouse
■
Before cleaning the mouse, ensure that the power to the computer 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 the “Cleaning the Computer Case”
section in this chapter.
Service Considerations
Listed below are some of the considerations that you should keep in mind during the
disassembly and assembly of the computer.
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 off
only
when the computer is turned off or the power cable has
been disconnected.
The cooling fan is always on in all other instances (when the computer is either in the “On,”
“Standby,” or “Suspend” mode).
You must disconnect the power cord from the power source before opening the computer to
prevent system board or component damage.
Tools and Software Requirements
To service the computer, you need the following:
■
Torx T-15 screwdriver (Compaq screwdriver with bits PN 161946-001)
■
¼-inch wrench for the speaker nuts
■
Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)
■
Diagnostics software
■
Compaq tamper-resistant T-15 wrench (Smart Cover FailSafe Key, PN 166527-001) or
Compaq tamper-resistant bits (Smart Cover FailSafe Key, PN 166527-002)
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