85 x 4 4-Channel Trunk Mount Amplifier
(120-1977)               Care and Maintenance         Faxback Doc. # 16923

The Radio Shack 85 X 4 High Power 4-Channel Trunk Mount Amplifier is an
example of superior design and craftsmanship.  The following suggestions
will help you care for your (amplifier) so you can enjoy it for years.

    Keep the amplifier dry.  If it gets wet, wipe it dry immediately, 
    Liquids might contain minerals that can corrode the electronic 
    circuits.

    Handle the amplifier gently and carefully.  Dropping it can damage
    circuit boards and cases and can cause the amplifier to work
    improperly.

    Use and store the amplifier only in normal temperature environments.
    Temperature extremes can shorten the life of electronic devices and
    distort or melt plastic parts.

    Keep the amplifier away from dust and dirt, which can cause premature
    wear of parts.

    Wipe the amplifier with a damp cloth occasionally to keep it looking
    new.  Do not use harsh chemicals, cleaning solvents, or strong
    detergents to clean the amplifier.

Modifying or tampering with the amplifier's internal components can cause
a malfunction and might invalidate your amplifier's warranty.  If your 
amplifier is not performing as it should, take it to your local Radio 
Shack store for assistance.

REPLACING THE FUSES

If the amplifier shuts down, you might need to replace the power wire's
50-amp tube-type fuse, either of the two 25-amp blade-type fuses on the
back panel, or all three fuses.

Cautions:  
           Do not use a fuse with ratings other than those specified here.
           Doing so might damage your amplifier.

           After replacing a fuse, let the amplifier cool down before you
           turn it on again.

Turn off your autosound system, then disconnect the cable from your
vehicle battery's negative (-) terminal.

Replacing the Tube-Type Fuse

  1.  Grasp the two ends of the power wire's fuse holder and twist one of
      them counterclockwise, then pull the ends apart.

  2.  Insert a new 50-amp, tube-type fuse into the longer of the fuse-
      holder's two ends, push them in and twist them clockwise.

Replacing a Blade-Type Fuse

  1.  Grasp the fuse's plastic end and pull it out.

  2.  Grasp the new fuse's plastic end and simply push it in.