Platform Controls; Circuit Board - Genie S-40 Service Manual

Section 4 • Repair Procedures

Platform Controls

The platform control box contains one printed
circuit board. The ALC-500 circuit board inside the
platform control box controls all proportional
machine functions from the platform. The joystick
controllers at the platform controls utilize Hall
Effect technology and require no adjustment. The
operating parameters of the joysticks are stored in
memory at the ECM circuit board at the platform
controls. If a joystick error occurs or if a joystick is
replaced, it will need to be calibrated before that
particular machine function will operate. See 1-2,
How to Calibrate a Joystick.
Each joystick controller should operate smoothly
and provide proportional speed control over its
entire range of motion.
d
a ALC-500 circuit board
b drive/steer joystick controller
c secondary boom up/down
joystick controller
d primary boom up/down and
turntable rotate left/right
joystick controller
4 - 2
a
c
b
1-1
ALC-500 Circuit Board
Note: When the ALC-500 circuit board is replaced,
the joystick controllers will need to be calibrated.
See 1-2, How to Calibrate a Joystick.
How to Remove the ALC-500

Circuit Board

1 Push in the red Emergency Stop button to the
off position at both the ground and platform
controls.
2 Remove the platform control box lid retaining
fasteners. Open the control box lid.
3 Locate the ALC-500 circuit board mounted to
the inside of the platform control box.
S-40 • S-45
October 2013
Electrocution hazard. Contact
with electrically charged circuits
could result in death or serious
injury. Remove all rings, watches
and other jewelry.
Part No. 102521