Revision 2.0
Figure 9: Use outward pressure on the needle nose pliers to carefully remove the sensor housing.
Figure 10: Close-up view of the optical homing sensor in the housing assembly.
Figure 10 show the two 5/64 inch button head cap screws that attach the optical sensor to
the homing sensor housing. If you are replacing the homing sensors, remove both screws
then rotate the optical sensor 90 degrees to remove it from the housing.
Cleaning the Optical Sensor
The red arrow in Figure 10 marks the location of the optical path that must be clear of
grease and other foreign matter for the sensor to function normally.
Before removing the homing sensor housing or the speed reducer, try using a can of
compressed air to clear the optical path. Insert the compressed air’s optional small plastic
nozzle into the oval hole in the homing sensor housing and depress the release valve in
short bursts, then test to see if homing is successful.
