Upright TM12 Service Manual page 73

Section 3 - Troubleshooting
Table 3-3: Connector J2
PIN PIN DESCRIPTION
J2-1 Depression mechanism activation (extend)
J2-2 Not Used
J2-3 24 Volt supply for solenoids
J2-4 Forward solenoid activation
J2-5 Reverse solenoid activation
J2-6 Up solenoid activation
J2-7 Steer Left solenoid activation
J2-8 Steer Right solenoid activation
Table 3-4: Connector J3
PIN PIN DESCRIPTION
J3-1 Alarm activation
J3-2 Tilt Sensor output signal
J3-3 24 Volt supply for Alarm, Tilt Sensor and solenoids,
J3-4 Input from platform down Proximity Switch
J3-5 Down solenoid activation
J3-6 Depression mechanism activation (retract)
J3-7 Not Used
J3-8 Battery negative supply for Tilt sensor and Proximity switch
107099-002 TM12 Work Platform
† If the alarm is sounding because the unit is out of level, BV will drop to 0V 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).
CONDITION
Lift Up requested
Lift Up not requested
—
Upper & Lower E-Stops closed
Upper or Lower E-Stop open
Forward requested
Forward not requested
Reverse requested
Reverse not requested
Up requested
Up not requested
Steer Left requested
Steer Left not requested
Steer Right requested
Steer Right not requested
CONDITION
Alarm sounding
(out of level unit lowering, etc.)
Unit within Level Sensor angle
Unit outside Level Sensor angle
Upper & Lower E-Stops closed
Upper or Lower E-Stop open
Above Proximity switch
Below Proximity switch
Down requested
Down not requested
Drive requested
Drive not requested
—
—
I/O Board Inputs and Outputs
CONTINUOUS
VOLTAGE
TO PIN
0V
—
BV
— —
BV
J4-5 & J3-3
0V
0V
—
BV
0V
—
BV
0V
—
BV
0V
—
BV
0V
—
BV
CONTINUOUS
VOLTAGE
TO PIN
† —
BV
—
0V
BV
J2-3 & J4-5
0V
0V
—
BV
0V
—
BV
0V
—
BV
— —
B– J4-11
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