Preventive maintenance
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Model 6276 User Guide
5 • Maintenance
Preventive maintenance
Clean fan filter
Periodically clean the filter on the Fan Tray Assembly. The frequency of cleaning depends on the environmental
conditions of where your equipment is located. Clean filter with a mild detergent and water, then air-dry, or
you can use compressed air. It should be completely dry before reuse.
Spare filters (part no. 05-00440-01) are available from Patton Electronics Company.
Note
When replacing the air filter, note that it is directional—the air-flow direction
must be in the direction indicated by the arrows on the filter.
Troubleshooting
System won’t power up
If the green LED on the power supply module does not light up, you should remove it from the chassis (warm-
swap). Then plug it back in, making sure it is seated properly. If green LED still does not light up, check to
make sure the polarity is wired correctly at the back of the chassis.
If the green LED lights up on the power supply module, but the system still isn’t powering-up, then the mod-
ule may be faulty and should be returned to the manufacturer.
No-load condition generates a false alarm
The power supply module may generate a false alarm under a no-load condition (no cards installed). A minimum of
1/2 amp (system admin card would suffice) needs to be plugged into the sub-rack to prevent this false alarm.
