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or operation of the amplifier. Refer the problem to competent ADCOM-authorized
service personnel.
Before checking or replacing a blown fuse, make certain you UNPLUG THE AC LINE
CORD FROM THE AC WALL OUTLET TO PREVENT POSSIBLE ELECTRICAL
SHOCK.
AC LINE FUSES
BUSSMANN MDA-25A/250V (120V Area)
BUSSMANN MDA-12A/250V (230V Area)
LITTELFUSE 314-25A/250V (120V Area)
LITTELFUSE 314-12A/250V (230V Area)
The fuses listed above, and their time-current blowing points, have been carefully selected
and thoroughly tested to deliver optimal performance while still accomplishing their
protective functions. Replace the AC LINE FUSE only with one of the fuses listed above.
DO NOT USE ANY SUBSTITUTE FUSES WITH DIFFERENT RATINGS,
TIME-CURRENT CURVES OR VALUES. Failure to observe this precaution may cause
serious damage to the amplifier circuits, MAY CREATE A FIRE HAZARD, AND WILL
VOID YOUR WARRANTY.
To remove a blown or suspect fuse from its fuse holder, use only a number 2 Phillips
screwdriver to prevent damage to the fuse holder. Simply press lightly on the fuse-holder
cap and turn counterclockwise. The cap will "pop" out after several turns. To replace the
fuse-holder cap, once the fuse has been replaced and properly installed in its seat on the
fuse-holder cap, press lightly inward, once the fuse and cap have been inserted in the
fuse-holder body, and turn the cap clockwise until it is firmly seated in the fuse-holder body.
Be certain not to cause cross-threading of the fuse-holder body and cap to prevent
damaging the fuse holder. DO NOT FORCE THE FUSE-HOLDER CAP INTO THE
THREADS. Seating of the cap in the fuse-holder body should be easily accomplished
without excessive force.
AC ON/OFF SWITCH
The AC ON/OFF switch controls power to the power transformer and circuits of the
GFA-575se. Whenever the GFA-575se is energized, the POWER LED will glow. Push the
top of the rocker switch to energize the GFA-575se. Push the bottom of the rocker switch to
turn the unit off.
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