Classe Audio CA-2100 Benutzerhandbuch

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4.  The AC mains fuse is blown.
There is a specific troubleshooting procedure for a blown AC mains fuse, 
since this rare occurrence sometimes indicates a significant problem. Please 
follow the following steps, in order:
a.  Disconnect 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. 
 
b. If the fuse appears to be blown, replace it only with a fuse of 
the same type and rating (specified below). Using any other type 
of fuse, particularly a larger-value fuse, can result in permanent 
damage to your amplifier.
 If you are uncomfortable replacing the 
fuse yourself, contact your Classé dealer for assistance.
   
Mains voltage: 
100/120VAC
   
Fuse type: 
MDL slow-blow
   
Rating: 
6A
   
Mains voltage: 
230/240VAC
   
Fuse type: 
MDL slow-blow
   
Rating: 
4A
c.  After replacing the fuse and fuse cover, reconnect the amplifier to 
the AC mains only and turn it on without reconnecting either the 
inputs or the speaker wires
. If the fuse blows again, disconnect it 
from the AC mains and contact your Classé dealer for assistance. 
 
d. 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 Classé dealer. 
e.  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 
amplifier 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 Classé dealer for assistance.
5.  The Standby LED is flashing quickly, and a Channel LED is flashing 
red.
•  Try resetting the unit by disconnecting it from the AC mains 
power, waiting a few seconds, and reconnecting the amplifier to 
power. If this does not solve the problem, contact your Classé 
dealer for assistance.