Classe Audio CT-M600 Car Amplifier User Manual


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28
Troubleshooting
In general, you should refer any service problems to your Classé dealer. Before
contacting your dealer, however, check to see if the problem is listed here.
1. No sound, and Standby LED is not lit.
• eamplierisnotpluggedintotheACmains,ortheACmains
are down (circuit breaker, fuse).
• Abrown-outorshort-termlossofpowermightrequirethe
internal microprocessor to be reset. Unplug the unit for at least
30 seconds and then plug it in again and try powering it up.
• eACmainsfuseisblown.SeeTroubleshooting #4, below (or
contact your Classé dealer).
• eACmainsisoutofrange.Checkthevoltagespeciedon
the rear panel.
2. No sound, and Standby LED is blinking red.
• Yourprotectioncircuitryhasbeenengaged.emostlikelycause
is the “check lter” interval. e amplier is programmed to ash
its standby LED after every 2,000 hours in the operate mode as
a reminder to check and clean the air intake lter. e amplier
continues to play after the 2,000 hour threshold is crossed, but
once entering the standby mode the amp will require a reset. See
Care and Maintenance.
• Press and hold the standby button to reset the amplier.
• If the amplier does not reset or continues to go into protection
mode, disconnect the amplier from the AC mains, and
disconnect all inputs and outputs.
• entrytopoweruptheamplieragain,connectingitonly
to AC power. If the LED continues to blink, there is a fault
condition in the amplier itself, and it should be disconnected
and taken to your Classé dealer for service.
• Ifitpowersupwithoutanydiculty,poweritbackdownand
reconnect only the inputs. en restart the amplier. If it goes
into its blinking protection mode, something is wrong with a
component “upstream” of the amplier—probably a DC oset
or similar problem. Your amplier is trying to protect your
loudspeakers (even small amounts of DC can increase distortion
anddamagespeakersinrelativelylittletime).Trydierent
source components to discover whether the problem is limited
to a single source, or exists all the time (which would indicate a
problem with the preamplier/processor). Contact your dealer
for help with the appropriate component.
3. The amplifier keeps shutting off.
• Makesureyouareprovidingadequateventilationtothe
amplier, and that the ambient room temperature is below 105°F
(40°C).
• Runthroughthetroubleshootingsequenceoutlinedabove
(assuming the amplier is going into its protection mode).
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