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Operations
Message Displays
Data card Expired Message
The display below shows the data card expiration date has passed. This
message may be set any time a data card is inserted and when the NMC
is powered up. The message is cleared after viewing.
Data card Invalid Message
The display below shows the data card is invalid, corrupted, or not
properly inserted. This last check is done only once at power-up. It
becomes an old message after being viewed.
Using Manual Magnetic Variation Message
The display below shows manual magnetic variation is in use. If a
valid data card is not properly inserted, the magnetic variation must be
entered manually during the power-up sequence. Manual magnetic
variation may also be entered in System mode. It becomes an old
message after being viewed.
Battery Voltage
The NMC checks the battery voltages every 15 seconds.
Low Battery Voltage - NMC
The low battery voltage message is generated when the NMC detects a
low battery voltage. User memory for waypoints, flight plans, and
configurations is at risk and may be lost. The unit must be serviced
within about a month after the first time this warning is seen. It
becomes an old message after being viewed.
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