Simrad AP35 Instruction Manual page 96

Simrad AP35 Autopilot
Display readout
Rudder test failed
(cont'd)
Compass data missing
Comm. failure active
Control
J3XX current overload
Low 15 volt
94
Probable fault
Rudder test not completed
within 2 min.
a) Poor connections to
drive unit
b) Faulty Main PCB in
junction unit
c) Faulty Power PCB in
junction unit
Rudder moves at full speed
to one side.
a) Faulty Power PCB in
junction unit
No data from selected
compass.
Active control unit
(including FU35) goes
silent.
Drive unit shut down due to
excessive load or short
circuit.
Internal 15 Volt supply in
Junction Unit below limit.
Recommended action
a) Check connections
b) Replace PCB
c) Check PCB for traces of burnt
transistors. – Change PCB.
Replace PCB
1. If more that one compass is
connected to the system, refer to the
USER SETUP menu to select a
different compass.
2. Check connections/Interface menu.
3. Replace compass PCB or interface
PCB (Note: Do not cut cables. The
PCB contains screw terminals).
1. Press STBY button on "Inactive"
unit to reset.
2. Check/repair Robnet cable.
3. Replace control unit/FU50 PCB.
1. Check Drive unit/Drive unit
installation/Manual steering/
Rudder
2. Disconnect Drive unit. If fault is
still present, replace junction unit
Power PCB.
1. Replace junction unit Main PCB
2. Replace junction unit Power PCB
if Mains voltage is 12V.
22083083E