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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
Level 1
Failure Message
Code
D8
DLNA/(SDU)--(T/L)
D9
DLNA/(SDU)--R
DA
DLNA/(SDU)--LO GN
DB
LO GAIN SUBSYSTEM
DC
NO ACTIVE MU/CMU
DD
SDU OWNER
REQS--SECD
DE
SDU OWNER
REQS--USER
DF
HI GAIN SUBSYSTEM
E1
BAD HSU DISABLE DISC
E4
BAD HSU/SDU I/F VER
E6
HSU/HPA TX RF PATH
E8
DLNA/HSU RX RF PATH
EC
WRG:STRAPS/HSU
ED
WRG:STRAPS/HSU ORT
EE
WRG:FWD ID/HSU
Undefined:
Others
LEVEL 1 FAULT XX
NOTE: The front panel display messages associated with failure codes CBx and CCx (WRG:SDI/HPA HI--GAIN and
WRG:SDI/HPA LO--GAIN, respectively) are identical to the messages raised for failure codes D1x and D2x,
respectively. This use of a single front panel display message for multiple failure codes (where the CB/CCx
codes reflect detection by the HGA/LGA HPA of an invalid HPA SDI strap condition, while the D1/D2x codes are
generated by the SDU in response to a report from the HGA/LGA HPA of having detected an unexpected SDI
code) is deliberate, and results from alignment of the front panel display messages with their CFDS/CMC
counterparts. Because of this approach, it is possible (in this specific case) for an operator to receive two
consecutive front panel display messages that are the same.
Honeywell International Inc. Do not copy without express permission of Honeywell.
MCS--4200/7200 Multi--Channel SATCOM System
Table 6-5. Level 1 Failure Messages (cont)
Top/Port HGA LNA coax cable output to HSU or SDU
Starboard HGA LNA coax cable output to HSU or SDU
LGA LNA coax cable output to HSU or SDU
LGA log--on functional test failure or could not initiate test
At least one (C)MU is communicating, but none have declared
themselves active
Error in the secured ORT partition
Error in the user ORT partition
Slave HGA log--on functional test failure or could not initiate test
HSU disable discrete from SDU not functioning
Incompatible interface between HSU and SDU
HSU to HPA coax cable
DLNA to HSU coax cable
HSU configuration pins error
HSU configuration pins and SDU ORT settings disagree
HSU forward ID straps error
XX is the Level 1 failure code (undefined)
Description
23- -20- -35
Page 6--17
15 Jul 2006
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