Gp 6.6 Retro-Reflective Sensors - Challenge CMT-130TC Service Manual

GP 6.6 Retro-reflective Sensors

Retro-reflective sensors emit infrared beams
that reflect back to the sensors by way of a re-
flector.
The reflector should be mounted as parallel to
the sensing surface as possible so that the re-
flected beam is sent directly back to the sensor.
There are two types of retro-reflective sensors
used in the trimmer and accessories: Side
mount and thru-hole mount (Figure 6-8).
Procedure
1. Switch the main power OFF.
2. Clean any debris from the sensor face, re-
flector, and the pathway in between.
3. Inspect the sensor and reflector for any
physical damage. Replace the sensor if the
housing or body is cracked. Replace the re-
flector if damaged or peeling.
4. Switch the main power ON. Check the
alignment of the sensor and reflector. A red
beam is emitted from the sensor that is visi-
ble on the reflector when aligned properly.
Realign as necessary by adjusting the
mounting brackets of the sensor and/or re-
flector.
5. Click the "Diagnostic" button on the screen
to bring up the diagnostic screen. If applica-
ble, click on an accessory diagnostic button
to bring up a specific accessory's diagnostic
screen.
6. Block the pathway between the sensor and
reflector with a book or sheet of paper. If
the sensor and main PWB are working cor-
rectly, the LED on the sensor will change
state, and an audible tone will be emitted
from the main PWB. Does the sensor
change state each time the pathway is
blocked and unblocked?
CMT-130TC Book Trimmer
Y N
a. Re-check alignment
b. Perform the RAP associated with the
specific sensor.
Sensor adjustment complete.
Figure 6-8. Retro-reflective Sensors
MAY 2019
6-7 6. General Procedures/Information