System 404 Four Line Telephone System  
(430-0451)                 Care and Maintenance       Faxback Doc. # 33054

LIGHTNING

Your Radio Shack phone product has built-in protection circuits - that meet
or exceed FCC requirements - to reduce risk of damage from surges in
telephone and AC power line current.  However, an incident such as a
lightning strike near or directly to these lines may cause an excessive
surge of voltage that can damage the phone device.

Lightning damage is uncommon, but it can occur to phones and other
electronic devices.  If you are concerned about it or live in an area with
frequent and/or severe electronic storms, we suggest that you unplug your
electronic products during the storms.

For trouble-free operation, there are two main things to remember:

1.  Never leave weak or dead batteries in your System 404.  Even "leak
    proof" batteries can leak damaging chemicals.  To assure adequate
    back-up power, the batteries should be replaced once a year.  We
    recommend our 23-583 Extra-Life batteries.

2.  Handle and use your phone with care.  It's a sensitive electro-
    mechanical instrument.  Avoid rough treatment, temperature extremes,
    and areas with high levels of dust and humidity.

IF YOU HAVE PROBLEMS

If your System 404 is not operating properly, going through this check list
might keep you from spending unnecessary time and money.

1.  Is the unit properly connected? Good ground at the AC outlet must be
    connected for proper status indication.

2.  Has the status indication been properly set? If you lose calls when
    attempting to place them on hold, you may need to change the "Hold
    condition" switch to the low current position.

3.  If your telephone is silent when a status indicator shows a incoming
    call, check the volume adjustment thumbwheel on the front of the unit.

IF YOU STILL HAVE PROBLEMS

Disconnect the unit immediately!

If other phones on the same line function properly, the problem is in the
unit or its installation.

If you're unable to locate the problem, bring the unit to your local Radio
Shack store.  We have the personnel, parts, and service to get your System
404 back into service as quickly as possible.


(LB-05/10/96)