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Troubleshooting
No front-panel indicator is shown
•
Check that the AC power supply is connected correctly.
Check that the ON OFF switch on the back panel is in the
•
ON position.
•
Check that the fuse in the rear panel has not blown.
Caution: Replace it with the same type and value of fuse.
•
Check that the fuse in the unit's power plug has not blown.
The sound has cut out
The Rack Mount Two Channel Power Amplifier includes a
thermal shutdown, which mutes the output if the amplifier
becomes too hot. The front panel indicator will change to red.
•
Leave the amplifier for a few minutes to cool down; the
front panel indicator will turn amber and the output will be
unmuted.
The Rack Mount Two Channel Power Amplifier also includes a
trip to protect the loudspeakers. This is triggered by excessive
DC on the input, extreme thermal overload, or if the mains
supply is interrupted. The front panel indicator will be blank.
•
Check the system for the cause of the cut out.
•
Switch off, wait five seconds, then switch on to reset the
power.
For more information see Operation , page 7.
•
Rack Mount Two Channel Power Amplifier 857 User Guide
15
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