
Simrad DR76, AR78, AR80, AR81 and AR83 Repeaters
24 20221487 / B
4.6 Fault finding
The AR81/83 are sealed units, and breakage of the security seal
will invalidate the warranty.
If trouble is encountered, make preliminary checks as described
below. If the problems remain unsolved, contact your nearest
Simrad dealer for assistance.
Symptom Probable fault Remedy
The repeater does not
operate.
No power or incorrect power
connection.
Check incoming power
supply.
The repeater aligns itself
to zero and does not
respond to heading
input.
The digital signal to the repeater is
either not present, or the sentence
being sent is incorrect or has wrong
polarity.
Switch the unit off and on
again.
Check the sentence from the
heading sensor.
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