Table 1001 Mode S Line Maintenance Troubleshooting Procedure - Honeywell CAS-100 Maintenance Manual

Table 1001. Mode S Line Maintenance Troubleshooting Procedure
Fault Annunciation
XPNDR TOP ANT
XPNDR LOWER ANT
No. 1 XPNDR ALT DATA
No. 2 XPNDR ALT DATA
XPNDR ALT DATA No. 1 and No. 2
SELECTED XPNDR
XPNDR CONTROL DATA
XPNDR TCAS DATA
No. 1 XPNDR DATA BUS
No. 2 XPNDR DATA BUS
NOTE: If fault is shown, do front-panel test of Mode S transponder unit to make these problems clear.
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MAINTENANCE MANUAL
CAS-100 COLLISION AVOIDANCE SYSTEM
(Fault Indication on PPI or Dedicated Display).
Check: Coaxial connectors, Coax cable, Coax
Switches, Coax switch circuit defective,
Transponder antenna
Check: Altitude source, Associated wiring
Check: Mode S transponder/control unit - Denotes
loss/incorrect data not covered by other fault
codes
Check: Max airspeed program pins, Data bus wires (4),
Mode S address wires, Suppression coax cable,
Power wires/circuit breaker
Remedy
34-45-47
Page 1006
1 Dec 2003