Service Manual

6802800U74-AN
Chapter 13: MTS Troubleshooting
375
Alarm ID
Descrip-
tion
ALM_RX_DC_2_775V_FAIL Receiver
DC 2.775V
line failure.
Recovery
Action
Receiver is
disabled by
the software
- BRC is un-
able to re-
ceive.
Clear Ac-
tion
bled by the
software.
If the alarm
condition
disappears
then Receiv-
er is re-ena-
bled by the
software.
Notes
problems (ca-
bles, connec-
tors) or the BRC
hardware fail-
ure / configura-
tion problem.
Alarm for BR-
Arch-2 only.
The alarm may
be reported be-
cause of some
power supply
problems (ca-
bles, connec-
tors) or the BRC
hardware fail-
ure / configura-
tion problem.
• ALM_RX_NVM_CKSUM_
FAULT
• ALM_RX_NVM_CKSUM_
FAIL
ALM_RX_FRU_BAND_MIS-
MATCH
Checksum
fault for the
Receiver
NVM pa-
rameters
was detect-
ed during
initialization
- some of
the Receiv-
er configu-
ration pa-
rameters
may be cor-
rupted.
Band mis-
match be-
tween BRC
receivers
was detect-
ed during
initialization.
Since BRC
has only
one receiv-
er this
alarm
should be
never ob-
served.
Software at-
tempts to set
the parame-
ters to the
default val-
ues taken
from the de-
fault region
in the NVM
memory.
No recovery
action taken
by the soft-
ware.
If the opera-
tion of re-
storing de-
faults is suc-
cessful the
alarm is
cleared. Oth-
erwise the
alarm status
is un-
changed.
The alarm is
cleared only
after reset-
ting BRC.
Corrupted con-
figuration pa-
rameters may
cause that BRC
works incorrect-
ly. The default
values may be
different than the
lost parameter
values. To en-
sure that the pa-
rameters can be
restored man-
ually to the earli-
er backed up
values.
If the alarm is re-
ported it means
some software
error.