Instruction Manual

G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air Page 5-9
190-00716-01 Revision 4
PFD 2 ARINC 429
Channel LRU Indicator Status
IN 1
GRS 77 or
GRS 7800 #2
Green
PFD2/GRS 77 GRS 7800 #2 data path is functioning correctly.
Red
PFD2/GRS 77 or GRS 7800 #2 data path is not functioning
correctly.
• Verify GRS 77 or GRS 7800 #2 status is “OK” using the
System Status page on the MFD. If it is not, correct
condition before proceeding, reference GRS troubleshooting
sections.
o Swap GRS1 and GRS2 (no reconfiguration
required) to confirm if the problem is in the original
GRS1.
o Replace original GRS1 if box turns green after
swapping units.
• Load PFD2 configuration file.
• Swap PFD2 and PFD1 to confirm if the problem is in the
original PFD2.
o Replace original PFD2 if box turns green after
swapping displays.
• Swap GRS1 and GRS2 (no reconfiguration required) to
confirm if the problem is in the original GRS1.
o Replace original GRS1 if box turns green after
swapping units.
• Check the PFD2/GRS 77 or GRS 7800 #2 interconnect
wiring for faults.
Amber
PFD2/GRS 77 or GRS 7800 #2 data path functionality is
unknown. Reload PFD2 configuration file.
IN 2
GDC 7400
#2
Green
PFD2/GDC 7400 #2 data path is functioning correctly.
Red
PFD2/GDC 7400 #2 data path is not functioning correctly.
• Verify GDC 74 #2 status is “OK” using the System Status
page on the MFD. If it is not, correct condition before
proceeding, reference GDC troubleshooting sections.
• Load PFD2 and GDC 7400 #2 configuration files.
• Swap PFD2 and PFD1 to confirm if the problem is in the
original PFD2.
o Replace original PFD2 if box turns green after
swapping displays.
• Check the PFD2/GDC 7400 #2 interconnect wiring for
faults.
Replace GDC 7400 #2 if problem remains.
Amber
PFD2/GDC 7400 #2 data path functionality is unknown. Reload
PFD2 configuration file.