HP 7475a, Operation And Interconnection Manual

Page: 15 / 101

Operator Maintenance
There are no operator·serviceable parts inside the HP 7475A plotter.
Maintenance which can be performed by the operator is limited to
maintaining the appearance of the plotter. All other maintenance must
be performed by qualified service personneL Refer to the Shipment
paragraph for instructions on how to obtain servicing assistance.
General Cleaning
WARNING
Disconnect the plotter from the power source prior to
performing any maintenance.
DO NOT
allow water to
run onto electrical components and circuits or through
openings in the enclosure as this may create a shock
hazard.
CAUTION
Do not attempt to clean the grit wheels. Cleaning solu·
tions may dissolve the adhesive which secures the grit
particles to the wheels.
Thorough cleaning should be performed periodically. Cleaning intervals
are determined by the type of operation, local air contamination, and
climatic conditions. Cleaning procedures should include the following:
L
Blow away dust accumulation in the grit wheel area, with corn·
pressed air, if available, or brush away dust using the grit wheel
brush (Part No. 8710·1386).
2. Clean the outer surface of the plotter with a damp sponge or cloth.
Use a mild cleaning solution
if
necessary, followed by water to
rinse off any residue. Wipe dry after cleaning.
NOTE:
To prevent scratching, do not use abrasive cleaners on the
plastic carriage cover or on the outer surface of the plotter. In addition,
some "mild" detergents might cause the paint to blister because they
contain chemicals that strip water·based paints. For this reason, it is
recommended that you use a soft cloth dampened with a 50-50 solution
of isopropyl alcohol and water. Then rinse off any residue with water
and dry with a soft, lint-free cloth
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OWNER'S INFORMATION
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