89000109-002
xVue Touch Installation Manual
Rev 2
Page 8-14
© Honeywell International Inc. Do not copy without express permission of Honeywell.
For Use in Non-Certified Aircraft
Table 8-5 KG 71EXP Event Codes
System Behavior
Possible Root Cause
Event
Log
Code
Troubleshooting Action
After power up, the KG
71EXP system does not
provide any valid data –
all attitude as well as air
data remains invalid at
the PFD.
When CMT is connected
and power is applied, the
connection between the
KG 71EXP and the CMT is
not established.
The KG 71EXP does not
power up when
electrical power is
applied.
NA
• Check the KG 71EXP circuit breaker.
• Check the KG 71EXP power wiring
including the KG 71EXP connector.
• If power installation is correct, restart
the KG 71EXP. If problem persists,
replace the KG 71EXP unit.
RAM Integrity Check
fails.
NA
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit. Note
that because of this failure Applica-
tion SW cannot start, thus no event is
logged. Next, the communication with
the CMT will not be established.
Application SW Integrity
check fails
NA
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit. Note
that because of this failure Applica-
tion SW cannot start, thus no event is
logged. Next, the communication with
the CMT will not be established.
After power up, the KG
71EXP system does not
provide any valid data –
all attitude as well as air
data remains invalid at
the PFD.
When CMT is connected
and power is applied, the
connection between the
KG 71EXP and the CMT is
correctly established.
HW Watch Dog PBIT
Check (Part 1 or Part 2)
fails.
1 or 2
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
Software Part Number
Check fails.
3
• Replace the KG 71EXP unit. Note:
When in-field SW updates will be
allowed, then the KG 71EXP SW
should be re-loaded first.
NVM Application Data
Integrity Check fails
4
• Connect CMT and re-configure the KG
71EXP system. If problem persists,
replace the KG 71EXP unit.
After power up, the KG
71EXP provides all
attitude and heading
data but no air data
except the Indicated
Airspeed.
Static IPT Sensor Check
fails.
5
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.
After power up, the KG
71EXP provides Altitude
only.
Differential IPT sensor
Check fails.
6
• Restart the KG 71EXP. If problem per-
sists, replace the KG 71EXP unit.