System Maintenance Manual

G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air Page 5-5
190-00682-01 Revision G
NOTE
Reference Table 3-1 for interpretation of data indicator symbols
The box next to each channel indicates the current status of the channel per the below:
• Red X = data path is known to be failed
• Amber question mark (?) = data path status is unknown
• Green checkmark ()= data path is known to be good
The applicable data paths can be verified by viewing the configuration mode pages listed below.
5.2.1.1 GDU RS-232 / ARINC 429 CONFIG Page
PFD 1 RS-232
Channel LRU Indicator Status
CHNL 2 GMC 710
PFD1/GMC 710 data path is functioning correctly.
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 to a green
checkmark (√) after swapping displays.
• Check the PFD1/GMC 710 interconnect wiring for faults.
Replace GMC 710 if problem remains.
PFD1/GMC 710 data path functionality is unknown. Reload
PFD1 configuration file.