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7800 SERIES OPERATION – SECTION 5
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.
The procedures outlined in this section are direct-
ed towards an experienced electronics technician;
it assumes that the technician has knowledge of
typical electronics safety and maintenance proce-
dures.
CAUTION
Before you begin, make sure your
cabinet is disconnected from the power
source, with power switch in the OFF
position
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
module's front and rear grills should be cleaned
periodically. To clean the amplifier grills and filter,
complete the following steps:
96-8007105_07-14-23
1. Turn the system OFF. Disconnect the amplifier
from its power source.
2. Remove the four Torx-head screws, located
along the left and right edges of the front panel
of each amplifier module using a Torx T15
driver. Retain.
3. Remove the amplifier modules' front covers 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
the system.
6. Reinstall amplifier modules' front filters and
ventilation grills. Secure the front grills using
the retained screws
6.2 Clean Cabinet Interior
6.2.1 Tools Required
The recommended equipment and supplies
needed to perform the functions required for this
task are described below.
•
Vacuum cleaner
1. Using a vacuum cleaner, remove any dust that
has accumulated within the cabinet interior.
2. Close the cabinet rear door and restart the sys-
tem. Check for any problems such as inopera-
tive fans that might cause overheating.
.
Information subject to change
35
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