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Installation 
20221495F
 93 
3.26  External Alarm 
The external alarm circuit has an open collector output for an 
external alarm relay or buzzer (not on AC10). The operating 
voltage for the circuit is the main supply voltage. Max. load 
on external alarm output is 0.9 Amp. 
Ext.
alarm
TB6
AUTOPILOT COMPUTER
POWER PCB
TB7
TB8
TB9
 
Figure   3-28 External alarm connection 
3.27  LF3000 Linear Feedback 
Caution ! 
The rod of the LF3000 is not locked in place in the cylinder. 
Pay attention as it may slip out of its housing and end up on 
the seabed. 
The LF3000 is a waterproof feedback unit. It has a 300 mm 
(11,8") stroke and comes with a special mounting bracket which 
secures the LF3000 to the cylinder of the existing outboard drive 
unit. 
The 8,5 m (28') cable is terminated in the LFI3000 Mk2 Linear 
Feedback Interface according to Figure 3-30. 
The mounting hardware provided is made to interface with 
Teleflex HC5340 cylinders and Hynautic K7 and K10 Cylinders. 
The hardware may not be appropriate for other systems. 
Center the drives. Loosely secure the LF3000 to the supplied 
mounting bracket, across the center of the drive unit cylinder. 
Either cylinder may be used if there is a dual set up. You may 
mount the feedback in either direction, i.e. the shaft of LF3000 
may point to port or starboard. 
Loosen the end bolt (a) used to secure the cylinder to the drive 
unit mount. Insert the rod retaining assembly (b) and retighten 
the bolt. Secure the feedback rod to the retainer plate using the