8 TROUBLESHOOTING
If thexVue Touch fails to work, as it should, verify its operation using the xVue Touch Pilot's Guide and
identify the functionality that has been lost. Match the symptom to the discrepancy to get an idea for a
corrective action.
Symptom
Display Does Not Power Up
Smart Touch Not Working
Altimeter, Airspeed Failures
(Red X)
89000109-002
Rev 2
© Honeywell International Inc. Do not copy without express permission of Honeywell.
For Use in Non-Certified Aircraft
Table 8-1 xVue Touch System Troubleshooting Chart
Causes
Improper Power/Ground
Circuit Breaker Not Set or
Defective
KSD 100EXP Defective
Touch Sensor Failure
Inconsistent/Degraded Touch
Response
KSD 100EXP Defective
Improper Pitot/Static
Connection
Communication failure between
KG 71EXP and KSD 100EXP
KG 71EXP Defective
Corrective Action
• Check KSD 100EXP current draw,
reference Table 4-4
• Check wiring to KSD 100EXP
• Check and/or replace circuit
breaker
• Replace KSD 100EXP
• Reset KSD 100EXP
• Remove frost or dust from IR bar
(see Section 9.2.4.2)
• If fault persists, replace KSD
100EXP
• Perform Manual Touch Calibration
(see Section 8.2)
• Replace KSD 100EXP
• Verify pitot static connections
• Check for blockage in pitot static,
water, or debris
• Cycle power on KG 71EXP and KSD
100EXP
• Check KG 71EXP current draw, ref-
erence Table 4-4
• Check wiring from KG 71EXP to
KSD 100EXP
• Replace KG 71EXP
xVue Touch Installation Manual
Page 8-1
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