HP Z4 Maintenance and Service Guide - Page 20

Routine care, General cleaning safety precautions, Cleaning the computer case, Cleaning the keyboard

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● Never cover the ventilation slots on the monitor with any type of material. ● Install or enable power management functions of the operating system or other software, including sleep states. Routine care General cleaning safety precautions 1. Never use solvents or flammable solutions to clean the computer. 2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use the cloth on the component. 3. Always unplug the computer when cleaning with liquids or damp cloths. 4. Always unplug the computer before cleaning the keyboard, mouse, or air vents. 5. Disconnect the keyboard before cleaning it. 6. Wear safety glasses equipped with side shields when cleaning the keyboard. Cleaning the computer case Follow all safety precautions in General cleaning safety precautions on page 12 before cleaning the computer. To clean the computer case, follow the procedures described below: ● To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab. ● For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping the surface with a cloth or swab dampened with clear water. ● For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed; alcohol will evaporate quickly without leaving a residue. ● After cleaning, always wipe the unit with a clean, lint-free cloth. ● Clean air vents on the computer and all internal fans periodically. For information about accessing internal components, see Removal and replacement procedures on page 16. Dirty vents and fans can contribute to overheating, which leads to shortened product life. IMPORTANT: Use a can of pressurized air to blow out contaminants from the chassis. CAUTION: Do not use a vacuum due to the possibility of static discharge. Cleaning the keyboard Follow all safety precautions in General cleaning safety precautions on page 12 before cleaning the keyboard. To clean the tops of the keys or the keyboard body, follow the procedures described in Cleaning the computer case on page 12. When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 12 before following these procedures: CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the keys. 12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

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●
Never cover the ventilation slots on the monitor with any type of material.
●
Install or enable power management functions of the operating system or other software, including
sleep states.
Routine care
General cleaning safety precautions
1.
Never use solvents or
flammable
solutions to clean the computer.
2.
Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use
the cloth on the component.
3.
Always unplug the computer when cleaning with liquids or damp cloths.
4.
Always unplug the computer before cleaning the keyboard, mouse, or air vents.
5.
Disconnect the keyboard before cleaning it.
6.
Wear safety glasses equipped with side shields when cleaning the keyboard.
Cleaning the computer case
Follow all safety precautions in
General cleaning safety precautions
on page
12
before cleaning the computer.
To clean the computer case, follow the procedures described below:
●
To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
●
For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping the surface
with a cloth or swab dampened with clear water.
●
For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed; alcohol will evaporate quickly
without leaving a residue.
●
After cleaning, always wipe the unit with a clean, lint-free cloth.
●
Clean air vents on the computer and all internal fans periodically. For information about accessing
internal components, see
Removal and replacement procedures
on page
16
. Dirty vents and fans can
contribute to overheating, which leads to shortened product life.
IMPORTANT:
Use a can of pressurized air to blow out contaminants from the chassis.
CAUTION:
Do not use a vacuum due to the possibility of static discharge.
Cleaning the keyboard
Follow all safety precautions in
General cleaning safety precautions
on page
12
before cleaning the keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in
Cleaning the computer
case
on page
12
.
When cleaning debris from under the keys, review all rules in
General cleaning safety precautions
on page
12
before following these procedures:
CAUTION:
Use safety glasses equipped with side shields before attempting to clean debris from under
the keys.
12
Chapter 3
Routine care, SATA drive guidelines, and disassembly preparation