Motor Controller - Genie Z-45/25 Bi-Energy Service Manual

Section 4 • Repair Procedures

Motor Controller

11-1
Motor Controller
The drive motor controller is located under the non-
steer end drive chassis cover. The drive motor
controller can recognize machine drive
malfunctions and display controller fault codes by
flashing a LED at the ground controls and on the
motor controller. See the Troubleshooting section
of this manual for a list of fault codes and
additional information. There are no adjustments
needed on the drive joystick controller. For further
information or assistance, consult the Genie
Industries Service Department.
How to Test the Motor Controller
Use the following procedure to test
the motor controller. If the motor
controller is found to be faulty,
note which test failed and which
fault code (if any) was present at
the time of failure.
1 Turn the key switch to the off position and
disconnect the battery packs from the machine.
2 Remove the chassis cover from the non-steer
end of the machine.
3 Tag and disconnect all power cables from the
motor controller.
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
4 - 52 Genie Z-45/25 Bi-Energy and Genie Z-45/25J Bi-Energy
4 Press the release tab on the motor controller
harness connector and remove the motor
controller harness connector from the motor
controller.
5 Connect the leads from an ohmmeter to test
each motor controller terminal combination
listed below and check for resistance.
Result: All desired results must be 500 kilohms
or more. If any test has a result less than
500 kilohms, replace the motor controller.
Test
F1 to F2
F1 to B-
F1 to M-
F1 to B+
F2 to B-
F2 to M-
F2 to B+
B- to M-
M- to B+
Pin 17 to B-
Pin 20 to B-
July 2004
REV A
Desired result
(in kilohms)
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
500kΩ or more
Part No. 106488