Service Manual

6802800U74-AN
Chapter 13: MTS Troubleshooting
387
Alarm ID
Descrip-
tion
ALM_BRC_CP2A_REF_ALM CP2A refer-
ence is not
present -
the alarm
originates
from the
STIC FPGA
(which is
read by
DSP) and it
is reported
as a fault in-
dication
message
from DSP
ALM_BRC_CP2B_REF_ALM CP2B refer-
ence is not
present -
the alarm
originates
from the
STIC FPGA
(which is
read by
DSP) and it
is reported
as a fault in-
dication
message
from DSP
ALM_DEKEY_FROM_MMI BRC is de-
keyed by
using dekey
MMI com-
mand
ALM_GPS_FAILURE GPS failure
detected -
1PPS signal
is lost.
Recovery
Action
Hardware
automatical-
ly selects
another ref-
erence
which is
present.
Hardware
automatical-
ly selects
another ref-
erence
which is
present.
BRC is de-
keyed by the
software.
No recovery
action taken
by the soft-
ware.
Clear Ac-
tion
The alarm is
cleared after
de-keying
BRC.
The alarm is
cleared after
de-keying
BRC.
The alarm is
cleared (and
BRC is re-
keyed again)
after using
key MMI
command.
After de-key-
ing BRC and
regaining the
1PPS signal
the alarm is
cleared.
Notes
The alarm may
be reported be-
cause of the ex-
ternal reference
failure or BRC
hardware failure.
The alarm may
be reported be-
cause of the ex-
ternal reference
failure or BRC
hardware failure.
The alarm may
be reported be-
cause of the
1PPS signal
from SC failure
or link to SC fail-
ure or BRC
hardware failure.
ALM_RESET_PEND-
ING_ALARM
CMP Reset
request re-
ceived from
Site Con-
troller but
After the de-
lay time
elapses the
BRC is re-
set.
The alarm is
cleared only
after reset-
ting BRC.