Instruction Manual

G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air Page 5-5
190-00716-01 Revision 3
The applicable data paths can be verified by viewing the following configuration mode pages.
5.2.1.1 GDU RS-232 / ARINC 429 CONFIG Page
PFD 1 RS-232
Channel LRU Indicator Status
CHNL 2 GMC 710
Green
PFD1/GMC 710 data path is functioning correctly.
Red
PFD1/GMC 710 data path is not functioning correctly.
• Verify GMC710 is powered on.
o If GMC 710 will not power on, remove unit and
verify power and ground are present at the GMC
connector.
 If power or ground is not present,
troubleshoot aircraft wiring for faults.
 If power and ground are present, replace
GMC 710.
• Load PFD1 and GMC 710 configuration files.
• Swap PFD1and PFD2 to confirm if the problem is in the
original PFD1.
o Replace original PFD1 if box turns green after
swapping displays.
• Check the PFD1/GMC 710 interconnect wiring for faults.
Replace GMC 710 if problem remains.
Amber
PFD1/GMC 710 data path functionality is unknown. Reload
PFD1 configuration file.