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6
Trouble shooting
Symptom
WS Alarm-
Warning, IO terminal Bus (1-4) gnd
fail
WS Alarm-
Sysfail, IO terminal Bus (1-4) Com
G3 MaC Second edition, March 2000
Cause
Ground failure on
1
one terminal
2
3
4
No power in one
1
terminal
2
3
4
Loose
1
communication
cables
2
3
4
6 Trouble shooting
Action
In the Saab TankRadar I/O Unit ,
identify the terminals with a lit
red ground failure LED
Check the equipment (pumps,
valves etc) that the channels on
the terminal are connected to
Check the cables between the
equipment and the terminal
Contact a Saab Marine
Electronics' service agent
In the Saab TankRadar I/O Unit
cabinet, identify the terminals
with put out green power LED's
Check that the Connector
(power and communication) is
connected to the terminal
Measure power in the connector
Refer to as-built drawings
Replace terminal
In the Saab TankRadar I/O Unit,
identify the terminals with put out
yellow communication LED's
Check the communication
cables in the connector
Replace terminal
Contact a Saab Marine
Electronics' service agent
21
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