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Simrad AP20 Autopilot
Display
Probable fault
readout
Data failure
Wrong checksum
J3XX
on memory
parameters or
variables. Junction
unit will use
default values.
Com. failure
Junction Unit
with J3XX
faulty or possible
poor connections
in Robnet cable
from same.
Low supply
Mains voltage less
voltage
than 9 Volts
High supply
J300X, J300X-40
voltage
Mains exceeds
44 V
J3000X Mains
exceeds 29 V
112
Recommended action
Perform a "Master reset" and make a
new "Dockside set-up". Switch off and
on again. If the alarm is repeated, replace
Junction unit Main PCB.
1. Check Robnet connectors and cable.
2. Replace Junction unit Main PCB.
1. Verify by System Data Menu
2. Switch autopilot off, charge batteries
3. Check/repair battery charger
1. Verify by System Data Menu
2. Switch autopilot off
3. Check / repair battery charger
20220505H
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