Eastman Heavy Machinery
33
The troubleshooting chart may be used to locate and eliminate situations where machine operation may be
interrupted. If the problem cannot be corrected with the action listed, stow the machine and remove it from
service. Repairs must be made by qualified maintenance personnel.
Troubleshooting Guide
Display
Description
Lift
Reaction
01
System Initialization Fault: ECU may be malfunctioning, replace it.
Disables All Motion
02
System Communication Fault: Check communications cable
connections and other
wiring. If that does not resolve the problem, try replacing the PCU or
ECU.
Disables All Motion
03
Invalid Option setting Fault: Set appropriate option for this lift.
Disables All Motion
12
Chassis Toggle Switch ON at power-up Fault: Check wires to the
Toggle Switch or
look for a stuck Toggle Switch.
Disable Chassis
Control
18
Pothole Guard Fault: Check that the pothole guards are extended, check
the pothole
limit switches. Check wires to the switches, check the down limit switch
and connections.
Disable lifting and
driving
31
Pressure Sensor Fault: Check the wiring to the sensor and then the
sensor itself. Also
check to make sure that the correct option is properly selected (or not)
for load sensing.
Disables All Motion
32
Angle Sensor Fault: Check the wiring to the sensor and then the sensor
itself. Also
check to make sure that the correct option is properly selected (or not)
for load sensing
Disables All Motion
42
Platform Left Turn Switch ON at power-up Message: Ensure that
nothing is holding
the Joystick Toggle Switches down. If OK, consider replacing the
Joystick or PCU.
Diagnostic Message
Only
43
Platform Right Turn Switch ON at power-up Message: Ensure that
nothing is holding
the Joystick Toggle Switches down. If OK, consider replacing the
Joystick or PCU.
Diagnostic Message
Only
46
Platform Joystick Enable Switch ON at power-up Fault: Ensure that
nothing is holding
the Enable switch closed. If OK, consider replacing the Joystick or PCU.
Disable
Platform
Control
47
Platform Joystick not in neutral at power-up Message: Make sure that
the Joystick is in
the neutral (upright) position. Check the neutral zone parameter setting
in the LabView
Programmer. If it’s OK, consider replacing the Joystick or the PCU.
Lift Slows to
Elevated Speed
