HP EliteDesk 800 95W G4 Maintenance and Service Guide - Page 20

Cleaning the monitor, Service considerations, Tools and software requirements, Screws

Page 20 highlights

● 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 leveled key (like the space bar) from the keyboard. If these keys are improperly removed or installed, the keyboard may not function properly. ● 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. 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 Cleaning the computer case on page 11. 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 Cleaning the computer case on page 11. Service considerations Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the computer. Tools and software requirements To service the computer, you need the following: ● Torx T-15 screwdriver ● Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver; not required) ● Phillips #1 screwdriver ● Diagnostics software 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. 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 computer, it should be placed away from the work area to prevent damage. 12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

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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 leveled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.
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.
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
Cleaning the computer case
on page
11
.
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
Cleaning the computer case
on page
11
.
Service considerations
Listed below are some of the considerations that you should keep in mind during the disassembly and
assembly of the computer.
Tools and software requirements
To service the computer, you need the following:
Torx T-15 screwdriver
Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver; not required)
Phillips #1 screwdriver
Diagnostics software
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. 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 computer, it should be placed away from the work area
to prevent damage.
12
Chapter 3
Routine care, SATA drive guidelines, and disassembly preparation