User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 6-11: Computer Unit Self-Test Execution
Test Sequence
Activation
Test Indications
Power On Self-Test
Self-Test is activated
with each application of
system power
No indication unless a fault is
detected. System status/fault data is
stored in internal memory. These
faults can be displayed on its front
panel annunciator for (up to) the last
10 flight legs. Data can be recalled by
doing the commanded self-test on the
ground.
Continuous Self-Test
Executed automatically
as part of normal TCAS
inflight operation
No indication unless a fault is
detected. System status/fault data is
stored in internal memory. These
faults can be displayed on its front
panel annunciator for (up to) the last
10 flight legs. Data can be recalled by
doing the commanded self-test on the
ground.
Commanded Self-Test
Push the front panel
PUSH-TO-TEST button
● All T
3
CAS front panel lamps turn
on during a 3-sec lamp test. They
transition from “Green” to “non-
Green”.
● If the T
3
CAS is operational, the
T
3
CAS P/F Status green lamp
turns on for a 10-sec display
period and then turns off.
● If the T
3
CAS is not operational,
one or more amber fault lamps
turn on for a 11-sec display period.
Refer to Table 6-11
for corrective
action.
6-54
04 Nov 2014
34-45-29
Pub. No. 8600200-001, Revision 004
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