• Never bend battery contacts.
• Never submerge your phone into any cleaning solution.
• Never allow a cleaning solution to pool on the phone or in an orifice.
• Never spray any solution directly onto the phone.
• Never mix cleaning agents. The combined effects of cleaning agents are unknown. Mixing chemical
agents could seriously degrade the construction of the phone and make it susceptible to damage, even
with normal use.
• Never use furniture polishes, waxes, or plasticizer-based cleaners (ArmorAll
®
, and so on).
• Never use lanolin, aloe, glycerin, or other skin care products.
• Never use hand sanitizers to clean your phone or handle your phone when hands are wet with sanitizer
solution.
• Never apply any solvent such as acetone, mineral spirits, and so on
• Don’t exert undue pressure on the battery contacts on the bottom of the phone and inside the battery
compartment. Don’t rub, scrub, or use bleach.
Warning
Procedure
Step 1 Turn off the phone and remove the clip and battery.
Step 2 Spray canned air into crevices and orifices to blow out any lint or dirt.
Always point canned air at an angle away from your face and eyes.
Always wear safety goggles or glasses.
Never insert any instrument into any orifice including the microphone, earpiece, headphone jack,
USB plug, reset pin hole, or battery contacts.
Warning
Step 3 Clean surface dirt with soap and water with a damp, lint-free cloth.
You may scrub stubborn spots.
Don't scrub or bend battery contacts.
Don't squeeze water or any liquid into orifices, or a sticky plug can form that blocks the opening.
The result may be a significant deterioration in performance.
Warning
Step 4 Wipe off soap film with a different clean damp cloth.
Step 5 Dry with yet another clean dry cloth.
Step 6 Wipe battery contacts with a cotton swab dampened with alcohol to remove any lint.
Step 7 Polish the glass screen, photo lenses, flashlight, fingerprint scanner, and barcode reader (if present) with glass
cleaner towelettes.
Don't exert too much pressure on the glass screen.
Caution
Cisco Wireless Phone 840 and 860 User Guide
34
Your phone
Maintain your phone
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