Mechanical alignment – Simrad AUTOPILOT SYSTEM AP50 User Manual
Page 81

Installation
20221032B
79
Mechanical Alignment
The purpose of this procedure 
is to find the zero point and to 
allow the feedback unit to 
operate within its active 
segment. If the unit operates 
outside this segment, there will 
be a feedback failure alarm. 
1. Position the rudder 
amidships.
2. Loosen the two screws that
secure the transmission 
lever to the RF45X shaft. 
Feed
back failure zone
Acti
ve
se
gm
en
t
Slot
3. Turn on the autopilot by pressing the
STBY
(STBY) button and
wait until the start-up sequence is finished.
4. Press the
STBY
(STBY) button again, if necessary, to read the
rudder angle display. You may also read the rudder angle by 
accessing the User Set-up menu (page 39) and the SYSTEM 
DATA menu (page 145). 
5. Use a flat screwdriver in the slot and adjust the rudder angle
to zero degrees on the display.
6. Secure the transmission lever to the shaft. Return to the
Dockside settings and proceed to ‘Rudder Feedback 
Calibration’. 
Note !
If the autopilot presents a Rudder Feedback Alarm after “turn 
on”, proceed as follows: 
• Turn the autopilot off. Use a flat screwdriver in the slot and 
turn the shaft 180°.
• Proceed from item 3 above.
