IFD400 Series Pilot Guide
General 6-53
MAINTENANCE MODE
During normal operation, when power is applied to the IFD it
starts up in "flight mode". However, there is a separate built-in
"maintenance mode" that is used for various reasons including
changing the configuration of the IFD interfaces, uploading
databases, downloading logs, and performing software updates.
Typically, the only reason to get into maintenance mode is during
initial IFD installation and then periodically to update navigation,
obstacle, and chart databases. A detailed explanation of the
maintenance mode features that are used during IFD installation
is given in the IFD installation manual. Features that are
reasonably used by the pilot are described elsewhere in this
pilot's guide. This section describes only the method for starting
maintenance mode and the method to return to flight mode.
STARTING MAINTENANCE MODE AT POWER UP
If the IFD is powered off, maintenance mode can be started by
inserting a USB fob into the USB port located on the front panel
of the IFD. Once the fob has been inserted, apply power to the
IFD and the unit will power up into maintenance mode. If the fob
is empty, the "Logs" tab will be selected. Otherwise, the "Update"
tab will be selected.
STARTING MAINTENANCE MODE FROM FLIGHT MODE
If the IFD is already powered up in flight mode
and
the IFD can
determine that the aircraft is on the ground
, maintenance
mode can be started using one of two LSKs located on the AUX
SYS tab.
COOL FEATURE
The maintenance mode PIN exists to prevent
accidental changes to configuration settings, but it
has no effect on the ability to update databases or
download logs.
Note that defining a PIN is not required. Just skip
over that page and settings changes are
unrestricted. Once defined, though, it can only be
cleared by contacting tech support.
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