Machine Will Not Drive At Full Speed - Genie GR-8 Service Manual

August 2005
REV A
Machine Will
Not Drive At
Full Speed
Be sure all other
functions operate
normally.
Be sure the circuit
breaker and fuses
are not tripped or
blown.
Be sure the
batteries are fully
charged and
properly connected.
Part No. 72965
3.18V
With key switch turned
to platform controls and
both Emergency Stop
buttons pulled out to the
position, move the
ON
lift/drive select switch
TS16 to the drive
position. Activate the
drive speed select
Before serial number
248: button BN25, OR
After serial number
247: toggle switch TS5,
until all three drive
speed indicator lights
are on.. Press and hold
the function enable
switch SW5. Move the
joystick controller JC3 in
the full drive forward
direction. Check voltage
on BL wire at terminal
#3 on motor controller
U6.
less than
3.18V
Replace drive speed
select printed circuit
board U29.
GR-8 • GR-12 • GR-15
Section 5 • Troubleshooting Flow Charts
Replace motor controller
U6.
Chart 13
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