Radio Shack XL-400 - Manual (Page 21)

21 Troubleshooting
CARE
To enjoy your amplifier for a long time:
• Keep the amplifier dry. If it gets wet,
wipe it dry immediately.
• Use and store the amplifier only in nor-
mal temperature environments.
• Handle the amplifier gently and care-
fully. Do not drop it.
• Keep the amplifier away from dust and
dirt.
• Wipe the amplifier with a damp cloth
occasionally to keep it looking new.
Modifying or tampering with the amplifier’s
internal components can cause a malfunc-
tion and might invalidate its warranty and
void your FCC authorization to operate it. If
your amplifier is not performing as it should,
take it to your local RadioShack store for as-
sistance.
REPLACING A FUSE
If the amplifier does not operate, you might
need to replace the red power cable’s 60-
amp SFE-type fuse or one or both of the 30-
amp blade-type fuses on the amplifier’s back
panel. Check all fuses.
Important: Let the amplifier cool down and
see if it starts again before you assume a
fuse needs to be replaced.
Caution: Do not use a fuse with ratings other
than those specified. Doing so might damage
your amplifier.
Replacing the SFE-Type Fuse
1. Disconnect the cable from the vehicle’s
negative (–) battery terminal.
2. Push together and twist the fuse
holder’s parts on the red power cable
until they spring apart. Then remove the
fuse.
3. If the fuse is blown, replace it. Use only
an SFE-type fuse with the proper rating
(available at many automotive supply
stores). The fuse must be 60 amps.
4. Reassemble the fuse holder by inserting
the fuse into the longer of the fuse
holder’s ends, and pushing together and
twisting the two parts until they latch
together.
5. Reconnect the cable to the vehicle’s
negative (–) battery terminal.
Replacing the Blade-Type Fuses
1. Disconnect the cable from the vehicle’s
negative (–) battery terminal.
Distorted sound (continued) The amplifier might have shut
down. Turn your auto sound system off
and let the amplifier cool. Make
sure the amplifier is properly
ventilated. Then turn your auto
sound system back on. The
amplifier turns itself back on
when it is cooled.
Symptom Possible Cause Suggestion
Fuse
12-2018.fm Page 21 Friday, May 12, 2000 12:46 PM