3-Channel Stereo Audio Mixer
(320-3009)                 Care and Maintenance       Faxback Doc. # 41587


Your Optimus SSM-1250 3-Channel Stereo Audio Mixer is an example of superior
design and craftsmanship.  The following suggestions will help you care for
your mixer so you can enjoy it for years.

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

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

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

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

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

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

REPLACING THE FUSE

The mixer uses a fuse for protection from power surges and short circuits.
If the mixer suddenly turns off and will not turn on, check the fuse.  If
necessary, replace the fuse with a 0.5-amp, 250-volt, fast-acting, 1 1/4 x
1/4 inch fuse such as Cat. No. 270-1003 (not supplied).

Follow these steps to replace the fuse.

1.  Disconnect power from the mixer.

2.  Using a Phillips screwdriver, unscrew the fuse compartment cap on the
    back of the mixer.

3.  Remove the old fuse and insert the new one.

Caution:  Make sure you replace the fuse only with another fuse of the
          same type and rating.

4.  Replace the fuse compartment cap.

5.  Reconnect power.

(km-09/12/97)