Gdu Status Page - Garmin G1000 NAV III Line Maintenance Manual

2.2.1.2 GDU STATUS Page

Figure 2-6. GDU STATUS Page
This page shows various items related to the GDU 104X display and its operation. The technician can use this
page to aid in the diagnosis and troubleshooting of the GDU 104X.
STATUS
RAM: Indicates condition of GDU 104X RAM memory. If it does not pass the unit may not initialize.
XILINX: Indicates condition of GDU 104X XILINX processor. If it does not pass the unit may not initialize.
BASE MAP: Indicates condition of stored basemap in the GDU 104X. A green box indicates the basemap has
been installed. If the box is black, the basemap will need to be loaded. Contact Garmin for assistance.
ETHERNET 1, 2, 3: Indicates status of the GDU 104Xs Ethernet channel. A green box indicates the ETHERNET
loopback tests passed. A red or black box indicates it may not be used or a wiring fault is present.
RS-232 1, 2: Indicates status of the GDU 104X's RS-232 channel. A green box indicates the RS-232 loopback
tests passed. A red or black box indicates it may not be used or a wiring fault is present.
IRDA: Indicates status of GDU 104X IrDA infrared port. Used for Garmin testing, it is not activated at this time
ETHERNET 4: Indicates status of GDU 104Xs Ethernet channel 4. Used for Garmin testing, it is not activated at
this time
ANALOG
PHOTOCELL A, B: Shows the input value of display photocells, between 0 and 9999. The values can be
converted to a percentage by adding a decimal place two digits over from the right (Example:
8035 = 80.35%). If there is a significant split (~30% to 50%) you can expect the display to appear different from
the other display in the aircraft, IF both of their lighting curves are set to the same values. Replace the display if
one photocell reading is significantly different from the other.
BEZEL THERM: Shows the temperature of the GDU bezel, expressed in degrees Celsius.
(Example: 2064 = 20.64 degrees Celsius)
CCFT CRNT 1, 2: Shows an indication of current flowing through the display backlight bulbs. Number does not
reflect actual current value and is not useful for troubleshooting.
Page 2-20 G1000 Nav III Line Maintenance Manual
Rev. L 190-00352-00