Classe CT-2300 Two-Channel ユーザーズマニュアル

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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. 

•  The amplifier 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.

•  The AC mains fuse is blown. See Troubleshooting #4, below (or 

contact your Classé dealer).

•  The AC mains is out of range. Check the voltage specified on

the rear panel.

•  Your protection circuitry has been engaged. The most likely cause

is the “check filter” interval. The amplifier is programmed to flash 

its standby LED after every 2,000 hours in the operate mode as 

a reminder to check and clean the air intake filter. The amplifier 

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 amplifier.

•  If the amplifier does not reset or continues to go into protection 

mode, disconnect the amplifier from the AC mains, and 

disconnect all inputs and outputs.

•  Then try to power up the amplifier again, connecting it only

to AC power. If the LED continues to blink, there is a fault 

condition in the amplifier itself, and it should be disconnected 

and taken to your Classé dealer for service.

•  If it powers up without any difficulty, power it back down and

reconnect only the inputs. Then restart the amplifier. If it goes 

into its blinking protection mode, something is wrong with a 

component “upstream” of the amplifier—probably a DC offset 

or similar problem. Your amplifier is trying to protect your 

loudspeakers (even small amounts of DC can increase distortion 

and damage speakers in relatively little time). Try different

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 preamplifier/processor). Contact your dealer 

for help with the appropriate component.

•  Make sure you are providing adequate ventilation to the

amplifier, and that the ambient room temperature is below 105°F 

(40°C).

•  Run through the troubleshooting sequence outlined above

(assuming the amplifier is going into its protection mode).

•  The amplifier logs all protection circuit events. These are viewable

on the touchscreen of a CAN-Bus connected Classé component

or by your dealer on a PC using a special diagnostic program. 

Contact your dealer to assess the likely cause of the trouble.