97-7796264_09-04-2020
Information subject to change
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7548/7794/7796/7796HC OPERATOR’S MANUAL – SECTION 6
6 Maintenance
Simple maintenance can be performed by the
user to help keep the equipment operational.
The following routine maintenance is designed
to prevent problems before they occur. See the
Troubleshooting
section for recommendations for
restoring the equipment to operation after an error
condition has occurred.
Preventative maintenance is recommended after
the first 250 hours of operation, and every three
months or 250 hours thereafter. If the equipment
environment is dirty or dusty, preventative mainte-
nance should be performed more frequently.
6.1
Clean Amplifier Filter and Grills
6.1.1 Tools Required
The recommended equipment and supplies
needed to perform the functions required for this
task are described below.
•
Torx T15 driver
• Vacuum cleaner
•
Damp cloth (use water only or a mild soap
diluted in water)
To ensure adequate cooling and maximum ef
-
ficiency of the internal cooling fans, the amplifier’s
front and rear grills should be cleaned periodically.
To clean the amplifier grills and filter, complete the
following steps:
1.
Turn the amplifier OFF. Disconnect the ampli
-
fier from its power source.
2.
Remove the four Torx-head screws, located
along the left and right edges of the amplifier’s
front panel using a Torx T15 driver. Retain.
3.
Remove the amplifier’s front cover by pulling
straight towards you.
4.
Using a vacuum cleaner, vacuum the front and
rear ventilation grills. Vacuum the filters behind
the front ventilation grill.
5.
Using a damp cloth, clean the front and rear
ventilation grills. Dry with a clean cloth or allow
to air dry.
IMPORTANT: Grills should be com
-
pletely dry before plugging in or restarting
amplifier.
Before you begin, make sure your ampli
-
fier is disconnected from the power
source, with power switch in the OFF
position and the level control turned
completely down (counter-clockwise).
CAUTION
Summary of Contents for 7548
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