190-02177-02 Rev. A
Garmin G1000 NXi Pilot’s Guide for the Cessna NAV III
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
473
APPENDIX A
Message
Comments
COM #[1, 2] INOP
- CRNT - Check
COM current.
COM1 and/or COM2 current is low. Check COM current.
COM #[1, 2] INOP
- INTRL - Com
internal fault.
COM1 and/or COM2 has an internal fault.
COM #[1, 2] INOP
- SYNTH - COM
synthesizer lock fault.
COM1 and/or COM2 has a synthesizer lock fault.
COM #[1, 2] INOP
- VOLT - Check
COM voltage.
COM1 and/or COM2 voltage is low. Check COM voltage.
COM #[1, 2] REDUCED TX POWER
- COM synthesizer lock fault.
COM1 and/or COM2 has a reduced transmission power.
COM1 PTT
– COM1 push-to-talk key
is stuck.
The COM1 external push-to-talk switch is stuck in the enable (or “pressed”) position.
Press the PTT switch again to cycle its operation.
If the problem persists, the system should be serviced.
COM1 RMT XFR
– COM1 remote
transfer key is stuck.
The COM1 transfer switch is stuck in the enabled (or “pressed”) position. Press the
transfer switch again to cycle its operation. If the problem persists, the system should
be serviced.
COM1 SERVICE
– COM1 needs
service. Return unit for repair.
The system has detected a failure in COM1. COM1 may still be usable. The system
should be serviced when possible.
COM1 TEMP
– COM1 over temp.
Reducing transmitter power.
The system has detected an over temperature condition in COM1. The transmitter
operates at reduced power. If the problem persists, the system should be serviced.
COM2 CONFIG
– COM2 config error.
Config service req’d.
The COM2 configuration settings do not match backup configuration memory. The
system should be serviced
COM2 PTT
– COM2 push-to-talk key
is stuck.
The COM2 external push-to-talk switch is stuck in the enable (or “pressed”) position.
Press the PTT switch again to cycle its operation.
If the problem persists, the system should be serviced.
COM2 RMT XFR
– COM2 remote
transfer key is stuck.
The COM2 transfer switch is stuck in the enabled (or “pressed”) position. Press the
transfer switch again to cycle its operation. If the problem persists, the system should
be serviced.
COM2 SERVICE
– COM2 needs
service. Return unit for repair.
The system has detected a failure in COM2. COM2 may still be usable. The system
should be serviced when possible.
COM2 TEMP
– COM2 over temp.
Reducing transmitter power.
The system has detected an over temperature condition in COM2. The transmitter
operates at reduced power. If the problem persists, the system should be serviced.
CONFIRM BARO QFE
– Confirm
BARO QFE Reference Elevation
Confirm BARO QFE Reference Elevation.
DB CHANGE
– Database changed.
Verify user modified procedures.
This occurs when a stored flight plan contains procedures that have been manually
edited. This alert is issued only after an navigation database update. Verify the user-
modified procedures in stored flight plans are correct and up to date.
DB CHANGE
– Database changed.
Verify stored airways.
This occurs when a stored flight plan contains an airway that is no longer consistent
with the navigation database. This alert is issued only after an navigation database
update. Verify use of airways in stored flight plans and reload airways as needed.
DB MISMATCH
– Navigation
database mismatch. Xtalk is off.
The PFD and MFD have different navigation database versions or types installed.
Crossfill is off. Check the Aux-System Status Page to determine versions or regions.
Also, check the Aux-System Status Page for a database synchronization function not
completed. After synchronization is complete, power must be turned off, then on.
