7. TROUBLESHOOTING
7-8
Alarm list
Ref.
1
Alarm
Information
Solution
Burst not sent
Missing output
Internal Information
No need for action if terminal
operates normally.
Replace transceiver
2
EEPROM CRC failure
Appears when terminal software
was upgraded and configuration
set to default
Information: does not effect terminal
operation
3
External GPS position in
use
The internal GPS is not providing
position so the system is using the
(optional) external GPS receiver
Implemented in software REL 2.0
4
Beam selection failed
Not ready for call
GPS information does not convey
the position
Wait 15 minutes, verify antenna
view, restart CU
5
Modem thermometer
error
No connection or failure of the
thermometer module on the
modem unit
No need for action if terminal
operates normally
6
No contact with GPS
No readings from the internal GPS
module. Ignore this alarm if
terminal operates normally
Wait up to 15 minutes.
Replace GPS module in antenna
7
8
10
No GPS position
Power supply
thermometer error
Unable to read fwd and
ret ID
Readings from the module but
position is not available
No connection or failure of the
thermometer for the power supply
unit
The Terminal ID's are stored in a
secure flash chip on the CIB.
Indicates that the chip is defective
No GPS coverage, verify antenna
view
Power unit fans will automatically
be switched ON. System will
operate normally, except power
fans are always ONc
Replace CIB, Connector Interface
Board
9
RFB reported 28 V too
high
28 V is down-converted by RF
unit, used by control and tracking
unit
Replace antenna Transceiver
RFB reported 28 V too
low
28 V is down-converted by RF
unit, used by control and tracking
unit
Replace antenna Transceiver
11
RFB reported 48 V too
high
48 V is supported from CU to RF
unit via antenna coax
Verify voltage from CU/coax
12
RFB reported 48 V too
low
48 V is supported from CU to RF
unit via antenna coax
Verify voltage from CU/coax,
verify cable/connectors
13
Terminal adapter not
found
The terminal does not detect the
presence of TA
Restart the terminal. Verify TA
connection. Replace TA
14
TFB Temperature Sensor
defective
TFB = transceiver front end board
Antenna
Fans will automatically switch ON.
System will operate normally,
except power fans are always ON
15
TFB Temperature too
high
Errors where operational
conditions go out of range
Terminal will automatically switch
OFF, if necessary
16
TMB Temperature
Sensor defective
TFB = transceiver main board
Antenna
Fans will automatically switch ON.
System will operate normally,
except power fans are always ON
17
TMB Temperature too
high
Errors where operational
conditions go out of range
Terminal will automatically switch
OFF. If necessary switch ON CU
18
Printer failure
Serial printer on RS-232A/RS-
232B for Traffic Log lost contact
with CU
Turn printer ON
Check printer cable
Check printer DIP switches
19
Wrong antenna
Mismatch between CU software
and antenna type
Download correct Fleet CU SW.
Verify antenna type
FELCOM 30/50/70
20
Содержание Felcom 50
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