Computer Cleaning; Case; Air Intake Grill; 9130K Flexible Disc Drive Cleaning - HP 9020 Service Manual

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General Information
Computer Cleaning
The computer case and the air intake grill should be cleaned as required according to the following
instructions.
Case
The computer has been painted with a durable, long lasting, water-based paint which is non-toxic
and environmentally safe. It will preserve the appearance of the computer for many years. Clean
the computer according to the following instructions to sustain the quality finish indefinitely. Should
the finish be damaged, consult your local HP Sales and Support Office (Appendix G) for available
touch-up paints.
CAUTION
CHEMICAL SPRAY -ON CLEANERS USED FOR APPLIANCES AND
OTHER HOUSEHOLD APPLICATIONS MAY DAMAGE THE FIN-
ISH. THESE OR OTHER CHEMICAL CLEANERS SHOULD NOT BE
USED. DO NOT USE DETERGENTS THAT CONTAIN AMMONIA,
BENZENES, CHLORIDES, OR ABRASIVES. DISPLAY GLASS
SHOULD NOT BE CLEANED WITH ANY CLEANER. ONLY CLEAN
WATER SHOULD BE USED FOR CLEANING DISPLAY GLASS.
Before cleaning the computer, turn off the power switch, unplug the power cord, and remove any
interconnecting cables. Dampen a clean, soft, lint-free cloth with a solution of clean water and mild
soap. Wipe the soiled areas of the computer, ensuring that no cleaning solution gets inside the
computer. For cleaning more heavily soiled areas, a solution of 80% clean water and 20% isop-
ropyl alcohol may be used. Using a clean, soft, lint-free cloth dampened with clean water, wipe over
all areas that were cleaned with cleaning solution. Then dry the computer with a clean, soft, dry
cloth. A non-abrasive eraser may be used to remove pen and pencil marks.
Air Intake Grill
Cooling air is drawn through the air intake grill at the bottom front of the computer and is exhausted
at the rear. Ensure that the grill is free of obstructions at all times. Vacuum or brush grill as
necessary.
9130K Flexible Disc Drive Cleaning
To clean the read/write heads on the 9130K Flexible Disc Drive, use the software supplied in the
System Integrity Tests and the hardware contained in the 92193A Disc Drive Cleaning Kit available
from HP Computer Supplies Operation.