Instruction Manual

G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air Page 5-7
190-00716-01 Revision 4
PFD 1 ARINC 429
Channel LRU Indicator Status
IN 1
GRS 77 or
GRS 7800 #1
Green
PFD1/GRS 77 or GRS 7800 #1 data path is functioning
correctly.
Red
PFD1/GRS 77 or GRS 7800 #1 data path is not functioning
correctly.
• Verify GRS77 or GRS 7800 #1 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 PFD1 configuration file.
• Swap PFD1 and PFD2 to confirm if the problem is in the
original PFD1.
o Replace original PFD1 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 PFD1/GRS 77 or GRS 7800 #1 interconnect wiring
for faults.
Amber
PFD1/GRS 77 or GRS 7800 #1 data path functionally is
unknown. Reload PFD1 configuration file.
IN 2
GDC 7400
#1
Green
PFD1/GDC 7400 #1 data path is functioning correctly
Red
PFD1/GDC 7400 #1 data path is not functioning correctly.
• Verify GDC 74 #1 status is “OK” using the System Status
page on the MFD. If it is not, correct condition before
proceeding, reference GDC troubleshooting sections.
• Load PFD1 and GDC 7400 #1 configuration files.
• Swap PFD1 and 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/GDC 7400 #1 interconnect wiring for
faults.
Replace GDC 7400 #1 if problem remains.
Amber
PFD1/GDC 7400 #1 data path functionality is unknown. Reload
PFD1 configuration file.