Servo Motor; Servo Motor Test / Auto Tighten Test - PERFECTPASS StarGazer Quick Start Manual

Servo Motor

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The 4 – Phase servo motor can make hundreds of adjustments per second to maintain
the correct speed. It is vitally important that the throttle cable has free movement and
the brass L Adapter (Volvo only) connecting the PerfectPass throttle cable to throttle
arm can swivel and rotate smoothly.
If a servo motor is not installed in the correct location, the throttle cable may have too
much of a bend or may jam against the engine cover which will cause improper
operation.
Anytime you suspect the system is not controlling properly, a Servo Motor Test should
be performed as follows. If servo motor test is successful, perform a linkage test on
page 10.

Servo Motor Test / Auto Tighten Test

Every time you return the boat to neutral when PerfectPass is on, the servo will wind in
the cable until snug in a clockwise direction. This is the normal starting point for the
servo.
Each time you turn the key on or start the boat, PerfectPass becomes powered and the
servo will perform an "auto tighten" function and will attempt to wind in the cable to
confirm it is in normal position. (If in proper position, it will appear simply as a "click",
"click", click").
To check servo and servo power wire, with key off turn black knob on servo motor
counter clockwise ¾ of a turn. Now turn key on and black knob should turn clockwise
about ¾ of a turn as part of auto tighten. If it does, repeat procedure, except this time
hold black knob gently to apply some resistance to auto tighten. If it rotates with good
strength then it would appear servo and servo power cable are fine.
If it does not rotate or just vibrates, then a wiring phase coming to the servo may be
loose or broken. Inspect all wiring around servo. Pull both white plugs apart at servo
and inspect pins to ensure they are in place. Gently tug on each wire to ensure they are
securely in crimp. Check at Master Module where cable is connected.
If you cannot locate problem, contact PerfectPass at (902) 468-2150.
C:\Users\mark\Desktop\Trouble.StarGazer.Mechanical.docx
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