Grass Valley NV7512 v.1.3 - Manual (Page 112)

102 Rev 1.3 • 10 Oct 08
6. Maintenance
Battery Replacement
Fan Cleaning and Replacement
Three plug-in fan trays containing two cooling fans each are located at the top, bottom, and right
side of the router frame (when viewing from the front). The trays can be removed for inspection or
cleaning by opening the frame front door, sliding the latches that hold each fan module in place,
and pulling the module out of the frame. If the fans become dusty or clogged with lint, use a vac-
uum or compressed air to clean the dust off. Also check the openings at the back of the frame where
air enters and exits to be sure dust and lint have not accumulated.
The fan trays are easily replaced simply by sliding the tray out of the front of the frame and insert-
ing a new tray. The fans on the tray are held in place by four screws and a pluggable connector. To
replace the fans, remove the screws and unplug the connector.
Intake Filter Screen Cleaning
The intake filter is located on the front door assembly of the NV7512 Audio Router. To access the
filter open the router door by releasing the two thumbscrew locks. Remove the upper module brace
by loosening the two ¼ turn screws, then slide the filter up and to the right to remove it. This pro-
cess may be easier if the entire door is removed by lifting it straight up while open.
The system can be operated safely with the door removed for short periods of time. If the filter is
only lightly contaminated with debris, a vacuum cleaner or compressed air may be used for clean-
ing purposes. Clean the filter by vacuuming up loose debris or by blowing air from the clean side to
the dirty side. For filters badly loaded with debris, rinse with cold water or wash with warm water
and mild detergent. Be sure the filter is completely dry before re-installing it.
Battery Replacement
If the red Low Battery indicator on the control card turns on, the battery located on the front edge of
the card needs replacing. Grasp the exposed edge of the battery with your fingers and pull it
towards you to remove it.
Call NVISION for replacement battery information.
When you insert the new battery, be careful to observe the correct polarity.
Replacing Modules
Active cards, power supply modules and backplanes can be replaced or reconfigured in the router
frame. Whenever reconfiguring, be sure each active card has the correct corresponding backplane.
Caution To prevent explosion of the battery and possible equipment damage or harm to
personnel, be sure the battery is oriented with the correct polarity. Polarity mark-
ings are visible on the card’s battery housing.