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7
Status Monitoring Panel
Cooling Fan Maintenance
The N785-CH12 features three cooling fans located at the rear of the unit to draw air into the chassis. Each fan is
connected to the Status Monitoring Panel on the front of the unit. The fans may be cleaned periodically by removing the
panel assembly.
1. Switch both power supplies off (primary and redundant, if applicable) via the ON/OFF switches on each power supply.
2. Unscrew the cover screws and remove the covers.
3. Disconnect the three power cables supplying power to the fans.
4. Remove any dust or debris from the fans with a clean, dry cloth.
5. Replace the fan panel by reconnecting the power cables and screwing the panel back into place.
The chassis features a Status Monitoring Panel with three red “Fan” LEDs that illuminate to
indicate the three rear cooling fans are functioning properly. The 12 green “Slot” LEDs illuminate
to indicate a media converter has been correctly installed in the input slots. The LEDs will not
illuminate if media converters are not currently installed or if there is a problem with the power
supply.
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