SSM-1750 4-Channel Stereo Audio Mixer
(320-3008)                 Care and Maintenance       Faxback Doc. # 45076

Your Optimus SSM-1750 40 Channel Stereo Audio Mixer is an example of super-
ior 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. Tempera-
  ture 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 improperly.

  Wipe 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 and might invalidate your mixer's warranty.  If your mixer is
not performing as it should, take it to your local Radio Shack store for
assistance.

Replacing The Fuse

The mixer has a 250-volt, 0.5-amp fuse to protect it from power surges and
short circuits.  If the mixer suddenly turns off or will not turn on, the
fuse could be blown.  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).  Your local
Radio Shack store sells the required fuse.

Follow these steps to replace the fuse.

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

2.  Remove the old fuse and replace it with an identical fuse.

    CAUTION: Never use a fuse of a different type or rating.

3.  Replace the fuse compartment cap.


(br/EB 11/3/97)