Classe Audio CA-M400 Owner's Manual page 20

9 AC Mains Fuse
Your Classé power amplifier has an AC mains fuse, accessible on
the rear panel. If you suspect that your AC fuse has blown, discon-
nect your amplifier from the AC mains, as well as from its input
connections and speaker connections, and remove the fuse cover
on the rear of the unit.
If the fuse appears to be blown, replace it only with the same type
and rating of fuse. Using any other type of fuse, particularly a larger-value
fuse, can result in permanent damage to your amplifier. If you are un-
comfortable replacing the fuse yourself, contact your dealer for as-
sistance.
After replacing the fuse and fuse cover, reconnect the amplifier to
the AC mains and turn it on without reconnecting either the in-
puts or the speaker wires. If the fuse blows again, contact your
Classé dealer for assistance.
If everything seems fine, place the amplifier back into standby and
carefully reconnect the input cable and power the amplifier up. If
the fuse then blows (or the amplifier goes into protection), you
may have a serious fault with your preamplifier/processor. Contact
your local dealer.
Finally, if everything is still fine, place the amplifier in standby and
carefully reconnect the speaker wires. Check both ends of the
speaker wires for possible short circuits. Then power up the ampli-
fier again. If the amplifier remains functional (the fuse does not
blow), then the original fuse probably blew in order to protect the
amplifier from a large AC mains surge. If it blows again, contact
your dealer for assistance.
Do not open your amplifier. There are no user-serviceable
parts within this product.
Danger! Potentially dangerous voltages and current capabilities
exist within your power amplifier, even when
disconnected from AC mains. Do not attempt to open
any portion of the amplifier's cabinet. There are no user-
serviceable parts inside your power amplifier. All service
of this product must be referred to a qualified Classé
dealer or distributor.
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