Textron JACOBSEN Eclipse 2 Technical/Repair Manual page 73

Symptom: Reel motor will not engage.
Probable Cause
Faulty reel motor connections.
Faulty mow switch.
Faulty mow switch power circuit.
Faulty mow switch input circuit.
Faulty bail potentiometer.
Faulty bail potentiometer power circuit.
Open bail potentiometer ground circuit.
Faulty bail potentiometer input circuit.
Faulty reel motor.
Faulty reel motor controller.
Faulty main control unit.
Faulty throttle potentiometer.
Faulty throttle potentiometer power circuit.
Open throttle potentiometer ground circuit.
Faulty throttle potentiometer input circuit.
4262930-Rev A
Check connections (moisture, loose or corroded pins, etc.) and repair as necessary.
Test mow switch. (See "Mow Switch Test" on page 4-49.)
Measure voltage between main control unit connector J2-13 and ground. Measure
voltage between mow switch terminal 3 and ground. Voltage must range between
11.25 and 15 VDC.
Measure continuity between main control unit connector J2-14 and mow switch terminal
2. Continuity must be indicated.
Test bail potentiometer. (See "Bail Potentiometer Test" on page 4-55.)
Measure voltage between main control unit connector J2-31 and ground. Measure
voltage between bail potentiometer terminal 1 and ground. Voltage must be
approximately 5 VDC.
Measure continuity between main control unit connector J2-30 and bail potentiometer
terminal 1. Continuity must be indicated.
Measure voltage between main control unit connector J2-32 and ground. Measure
voltage between bail potentiometer terminal 2 and ground. Voltage must range
between 0 and 5 VDC.
Test reel motor. (See "Reel Motor Test" on page 4-53.)
Substitute reel motor controller with a known good controller.
Substitute main control unit with a known good controller.
Test throttle potentiometer. (See "Throttle Potentiometer Test" on page 4-54.)
Measure voltage between main control unit connector J2-15 and ground. Measure
voltage between throttle potentiometer terminal 3 and ground. Voltage must be
approximately 5 VDC.
Measure continuity between main control unit connector J2-29 and throttle potentiometer
terminal 1. Continuity must be indicated.
Measure voltage between main control unit connector J2-16 and ground. Measure
voltage between throttle potentiometer terminal 2 and ground. Voltage must range
between 0 and 5 VDC.
ELECTRICAL
Remedy
4
4-35