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Cleaning The Monitor; Service Considerations; Tools And Software Requirements; Screws - HP Z4 G4 Maintenance And Service Manual

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If you want to remove a key, use a specially designed key puller to prevent damage to the keys. This tool
is available through many electronics supply outlets.
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 then 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 towelette designed for cleaning monitors or with a clean cloth
moistened with water. 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

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:
Diagnostics software
Flat-bladed screwdriver (may sometimes be used in place of a Torx screwdriver)
Phillips #2 screwdriver
Torx15 screwdriver


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.
As each subassembly is removed from the computer, it should be placed away from the work area
to prevent damage.
Never remove a wide, level key (like the space bar) from the keyboard. If these keys are
Cleaning the computer case on page
Service considerations


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