Protection Modes And Indicators - Classe Audio CA-301 Service Manual

Protection Modes and Indicators

The front LED shows the status of the amplifier. When starting up normally, the CA301 will show a FLASHING
RED LED for about 15 seconds and if all is normal, the LED will go SOLID RED. If there is a fault, the LED will
go to a FLASHING GREEN LED. The CA301 is equipped with four Mosfet protection fuses. In the event that
one or more of these fuses would blow, the technician will first need to identify and cure the cause of failure
(please report to troubleshooting guide). When the cause has been identified, disconnect the unit from the
system including the AC power. Remove the top cover and look for damaged or burned components. If no
other components than the fuses appear to be damaged, the technician can then replace the broken fuses
with the same value and rating (please report to fuses section). The Mosfet fuses are located on the control
board. When replacing fuses, please make sure that the fuse holder are holding the fuses very tightly. A loose
fuse holder can translate into distortion on top of the signal.
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