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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
2
SYSTEM/SDU PASS/FAIL Message
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3
Level I Failure Messages
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Level 1
Failure Message
Code
AES LRU Failures:
00
(not applicable)
01
SDU
02
OTHER SDU
03
HSU
04
HPA--HI GAIN
Honeywell International Inc. Do not copy without express permission of Honeywell.
MCS--4200/7200 Multi--Channel SATCOM System
This one-line message, which summarizes the overall functional test or
CM status, takes on one of four possible states:
• SDU PASS
SYS PASS
• SDU PASS
SYS FAIL
• SDU FAIL
SYS PASS
• SDU FAIL
SYS FAIL.
This section lists all the applicable Level I failure messages that can be
displayed on the alphanumeric display, along with the appropriate LRU
or control bus input. These messages are listed in failure code order in
Table 6-5. For the functional test display, the message list includes all
the active failures in the snapshot and the list is static.
For continuous monitoring, the message list includes all currently active
CM failures. The presence or absence of functional test failures does
not affect the CM message list. The failure message list for the CM
display is potentially dynamic.
During continuous monitoring, if a new CM failure becomes active
during the scroll sequence, the respective message appears at its
proper location in the sequence according to its Level I code. This
occurs either during the current scroll sequence if that Level I code has
not yet been reached, or during the next scroll sequence if the failure is
still active. If a CM failure recovers during a scroll sequence, its
message does not appear in any subsequent scroll sequence, even if it
had appeared earlier. If a CM failure recovers while its particular
message is currently being displayed, the message continues to be
displayed until the MANUAL SCROLL button is activated or until the
time-out period expires.
Table 6-5. Level 1 Failure Messages
Unknown Level I failure
SDU failed
Other SDU (of a dual system) failed
HSU failed
High Gain Antenna HPA failed
Description
23- -20- -35
Page 6--13
15 Jul 2006
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