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CHAPTER 5:
MAINTENANCE/SERVICE
5.1 GENERAL INFORMATION
Cleaning
Disconnect the AC cord, then use a damp cloth to clean the amplifier's metal
and plastic surfaces. For heavy dirt, use a non-abrasive household cleaner
such as Formula 409 or Fantastik. DO NOT SPRAY THE CLEANER
DIRECTLY ONTO THE FRONT OF THE UNIT AS IT MAY DESTROY THE
LUBRICANTS USED IN THE SWITCHES AND CONTROLS! Spray onto a
cloth, then use the cloth to clean the unit.
Maintenance
Here are some tips for preventive maintenance.
• Do not remove the RA-100 top cover. There are no user serviceable parts
inside. Refer servicing to a qualified repair technician.
• Periodically check the AC cord for signs of fraying or damage.
• If you use the push connector output terminals, check that the cables are
securely in place and that no strands short to the chassis or any other
terminal.
• Periodically rotate the volume controls (make sure power is off). In many
applications the volume controls will be set to a particular point and not
adjusted. Occasional rotation of the volume controls will minimize build-
up of dust on the potentiometer wiper, thus minimizing scratchiness as the
unit gets older.
• Place a dust cover over the RA-100 when it is not in use.
Refer All Servicing to Alesis
Alesis has spent a great deal of effort researching power amplifier reliability.
We believe that the RA-100 is one of the most reliable amplifiers that can be
made using current technology, and should provide years of trouble-free use.
WARNING: The full AC line voltage, as well as high voltage/high current
DC voltages, are present at several points within the chassis. Service on this
product should be performed only by qualified technicians. THERE ARE NO
USER-SERVICEABLE PARTS INSIDE.
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