Platform Controls; Joystick Controllers - Genie S-80 Service Manual

Section 7 - Repair Procedures

Platform Controls

1-1

Joystick Controllers

Maintaining joystick controllers at the proper
settings is essential to safe machine operation.
Every joystick controller should operate smoothly
and provide proportional speed control over its
entire range of motion.
a
f e
Platform control box
a horsepower limiter board
b terminals
c drive proportional controller
d extend/retract proportional controller
e boom proportional controller
f turntable rotate proportional controller
Boom Up/Down Controller
Adjustments
Do not adjust the joystick
controllers unless the static
battery voltage is above
12V DC and the alternator
is operating properly with
13.6 to 14.5V DC output.
Electrocution hazard. Contact
with electrically charged circuits
may result in death or serious
injury. Remove all rings, watches
and other jewelry.
7 - 2
b
d c
Genie S-80 & Genie S-85
Service Manual - First Edition
1 Check the battery condition with a volt meter.
The reading should be 12V DC or more to
accurately adjust the controller.
2 Turn the key switch to platform control and
pull out the Emergency Stop button to the
position at both the ground and platform
ON
controls. Do not start the engine.
3 Open the platform control box lid and locate
the boom up/down controller.
a b c d e
a terminal "D2" directional output
b terminal "A" proportional output
c terminal "-" ground
d terminal "+" positive
e terminal "R" activates max-out range
f terminal "D1" directional output
g ramp rate adjustable trimpot
h lo range adjustable trimpot
i threshold adjustable trimpot
j hi range adjustable trimpot
4 Set the preliminary ramp rate: Turn the trimpot
adjustment screw clockwise 15 turns or until
you hear a repeated click.
5 Connect the red(+) lead from a volt meter to
the "A" terminal on the controller printed circuit
board. Connect the black(-) lead to ground.
6 Set the threshold: Press down the foot switch,
then slowly move the control handle off center
until the moment a voltage reading appears.
Adjust the voltage to 3.5V DC. Turn the
threshold trimpot adjustment screw clockwise
to increase the voltage or counterclockwise to
decrease the voltage.
f g h i j
Part No. 34032