Section 3 - Troubleshooting I/O Board Inputs and Outputs
113101-000 MX15 / MX19 | Service Manual Page 3-9
Table 3-3:
Connector J2 – Valve Manifold
Table 3-4:
Connector J3 – Chassis
PIN PIN DESCRIPTION CONDITION VOLTAGE
CONTINUOUS
TO PIN
J2-1 Depression mechanism activation (extend)
Lift Up requested ØV
—
Lift Up not requested BV
J2-2 Not Used — — —
J2-3 24 Volt supply for solenoids
Upper & Lower E-Stops closed BV
J4-5 & J3-3
Upper or Lower E-Stop open ØV
J2-4 Forward solenoid activation
Forward requested ØV
—
Forward not requested BV
J2-5 Reverse solenoid activation
Reverse requested ØV
—
Reverse not requested BV
J2-6 Up solenoid activation
Up requested ØV
—
Up not requested BV
J2-7 Steer Left solenoid activation
Steer Left requested ØV
—
Steer Left not requested BV
J2-8 Steer Right solenoid activation
Steer Right requested ØV
—
Steer Right not requested BV
PIN PIN DESCRIPTION CONDITION VOLTAGE
CONTINUOUS
TO PIN
J3-1 Alarm activation
Alarm sounding
(out of level unit lowering, etc.)
†—
† If the alarm is sounding because the unit is out of level, BV will drop to ØV as long as the alarm is sounding.
If the alarm is sounding because the unit is lowering, there will be alternating high and low voltages (the voltages will vary).
J3-2 Level Sensor output signal
Unit within Level Sensor angle BV
—
Unit outside Level Sensor angle ØV
J3-3 24 Volt supply for Alarm, Level Sensor and solenoids,
Upper & Lower E-Stops closed BV
J2-3 & J4-5
Upper or Lower E-Stop open ØV
J3-4 Input from platform down Proximity Switch
Above Proximity switch ØV
—
Below Proximity switch BV
J3-5 Down solenoid activation
Down requested ØV
—
Down not requested BV
J3-6 Depression mechanism activation (retract)
Drive requested ØV
—
Drive not requested BV
J3-7 Not Used — — —
J3-8 Battery negative supply for Level sensor and Proximity switch — B– J4-11
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