Service Manual

6802800U74-AN
Chapter 13: MTS Troubleshooting
382
Alarm ID
Descrip-
tion
Recovery
Action
the cover-
age can be
lower
Clear Ac-
tion
Notes
• ALM_RX_DC_INJ2_SHOR
T_FAULT
• ALM_RX_DC_INJ2_SHOR
T_FAIL
• ALM_RX_DC_INJ3_SHOR
T_FAULT
• ALM_RX_DC_INJ3_SHOR
T_FAIL
Receiver
branch2
LNA DC in-
jection fail-
ure.
Receiver
branch3
LNA DC in-
jection fail-
ure.
Branch2 of
Receiver is
disabled by
the software
- if no more
enabled
branches
then BRC is
unable to re-
ceive, other-
wise BRC is
still able to
receive but
the cover-
age can be
lower
Branch3 of
Receiver is
disabled by
the software
- if no more
enabled
branches
then BRC is
unable to re-
ceive, other-
wise BRC is
still able to
receive but
the cover-
age can be
lower
If the alarm
condition
disappears
then
branch2 of
Receiver is
re-enabled
by the soft-
ware.
If the alarm
condition
disappears
then
branch3 of
Receiver is
re-enabled
by the soft-
ware.
The alarm may
be reported be-
cause of the
BRC hardware
failure.
The alarm may
be reported be-
cause of the
BRC hardware
failure.
ALM_RX_DC_INJ_SHORT_F
AIL
Reported when ALM_RX_DC_INJx_SHORT_FAIL alarms for all
Receiver branches are set
ALM_RX_INJ1_SHORT_LON
G_FAULT
ALM_RX_INJ2_SHORT_LON
G_FAULT
Reported
when
ALM_RX_D
C_INJ1_SH
ORT_FAIL
is set for
longer time
than 5 mi-
nutes
Reported
when
ALM_RX_D
C_INJ2_SH
Branch1 of
Receiver is
finally disa-
bled (by set-
ting DC sup-
ply control
line for the
LNA)
Branch2 of
Receiver is
finally disa-
bled (by set-
There is no
automatic
recovery
from this
alarm.
There is no
automatic
recovery
The alarm may
be reported be-
cause of the
BRC hardware
failure.
The alarm may
be reported be-
cause of the