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CARE AND MAINTENANCE
Your RadioShack System 420 Call Waiting Caller ID is an ex-
ample of superior design and craftsmanship. The following
suggestions will help you care for your system so your can en-
joy it for years.
• Keep the system dry. If it gets wet, wipe it dry immedi-
ately. Liquids can contain minerals that corrode the elec-
tronic circuits.
• Use and store the system only in normal temperature
environments. Temperature extremes can shorten the
life of electronic devices, damage batteries, and distort or
melt plastic parts.
• Handle the system gently and carefully. Dropping it can
damage circuit boards and cases and cause the system
to work improperly.
• Keep the system away from dust and dirt, which can
cause premature wear of parts.
• Wipe the system with a damp cloth occasionally to keep
it looking new. Do not use harsh chemicals, cleaning sol-
vents, or strong detergents to clean your system.
Modifying or tampering with the system’s internal components
can cause a malfunction and might invalidate its warranty and
void your FCC authorization to operate it. If your system is not
performing as it should, take it to your local RadioShack store
for assistance. If the trouble is affecting the phone lines, the
phone company might ask you to disconnect your system until
you have resolved the problem.
43-971.fm Page 30 Monday, August 16, 1999 4:12 PM