Compaq Deskpro 4000N - Desktop PC, Руководство по обслуживанию и ремонту

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4-6 Removal and Replacement Preliminaries
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If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool
is available through many electronic supply outlets.
CAUTION: Never remove a wide levelled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.
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Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed
out. Be careful not to wipe away lubricants necessary for proper key functions. Use tweezers to
remove any fibers or dirt in confined areas. Allow the parts to air dry before reassembly.
4.2.4 Cleaning the Monitor
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Wipe the monitor screen with a clean cloth moistened with water or with a towlette 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.
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To clean the monitor body follow the procedures in Section 4.2.2.
4.2.5 Cleaning the Mouse
Before cleaning the mouse, ensure that the power to the computer is turned off.
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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 Section 4.2.2.
4.3 Service Considerations
Listed below are some of the considerations that you should keep in mind during the disassembly
and assembly of the computer.
4.3.1 Tools and Software Requirements
To service the computer, you need the following:
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Torx T-15 screwdriver
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Flat-bladed screwdriver
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Diagnostics software
■ Tool kit, Compaq part number 100767-001 (includes case utility tool, connector removal tool,
and loop-back plugs)
4.3.2 Screws
The screws used in the computer 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. Compaq strongly recommends that all screws removed during disassembly be kept
with the part that was removed, then returned to their proper locations.