SECTION 4 | TECHNICAL REFERENCES
4.5 | TROUBLESHOOTING FLOWCHART: POWER
Does the machine
function at all:
(Elevate/Lower)
Is the battery connected?
Is the battery fully
charged?
Is key switch
turned on in the desired
selection?
(may select upper controls or
lower controls)
No
Is either E-Stop Button
depressed/activated?
Yes
Contact the manufacturer with
questions about a different problem
or for troubleshooting assistance
Revision: P01
Is the battery charger
plugged in?
No
No
Yes
Visually inspect wire
harness from lower
controls to upper.
Is there damage?
Turn key switch on
Reset E-Stop
buttons. Pull out
at both upper
control and lower
control locations.
Connect
battery.
See
Elevating
Problems
Flowchart
See
Lowering
Problems
Flowchart
No
Yes
Is machine in the
elevated or lowered
position?
Machine is Down
Machine is Up
Troubleshooting Flowcharts--General Notes:
Inspect parts for visible damage as they are encountered.
After each step, check if problem has been indentified and/or resolved.
If so, make the recommended fix or see a referenced document.
If not, continue troubleshooting.
If a part has been identified as needing replacement, see the Parts
Manual to identify part number to order.
If any wiring or components have been altered from the original
manufacture, problems may not be identifiable.
WARNING
Any modification on this machine without
the express consent of the manufacturer
is prohibited.
WARNING
Failure to comply with safety precautions
may result in damage, injury, or death.
Refer to Maintenance Manual for
complete warnings
Replace
wire harness
or repair
wire
See
Wiring
Diagram
Check wiring connections
to identify a power supply
problem.
See
Electrical Schematic
See also
Wiring Diagram
Or
Electrical Schematic
Unplug the charger.
Machine should not be
operated while battery is
charging.
Troubleshooting Flowchart: IQ LIFT Power
Troubleshooting Step 1: Main Power
Is the power
light on the
lower control
on?
Is there a diagnostic
flash code or message?
No
No
No
Yes
Is 20 AMP fuse
blown?
Yes
Is 250A fuse blown?
Replace with 20 Amp
Fuse.
Yes
Replace with 250
Amp Fuse.
No
Yes
No
No
Yes
Yes, but not properly
Yes or Unknown
Use diagnostic
message to
identify problem
Replace
battery
Yes
Further
questions?
Further
questions?
Fault indicates problem with an elevate or lower signal
MAINTENANCE & TROUBLESHOOTING
IQ LIFT
SUPO-759
REV C
26
