LC Toolchanger Sensors
The toolchanger sensors detect the state the toolchanger is in so safe toolchanges can be performed.
If the sensors fail or are misaligned, the toolchanger will freeze.
To test the sensors, first, determine which spindle you have
Unscrew the sensor clamp, remove the sensor and test it in Setup->diagnostics by putting a piece of steel up to the tip and verifying response.
If there is no response on only one sensor and all other sensors work properly, the sensor likely needs to be replaced. Contact HSD USA to obtain a replacement.
If the sensor checks out properly in diagnostics, it is probably just misaligned in the housing.
Note that the spindle must be in the proper state (chuck open/closed) for the sensor to properly sense the state. This means that if you are testing the chuck closed sensor, the chuck must be closed and there must be a tool in the chuck or the sensor will never trip, no matter how good it is or where it is located.
Columbo (Less common on new machines) toolchanger sensor testing:
Touch steel to the sensor and verify it responds in Setup->diagnostics.
If there is no response on only one sensor and all other sensors work properly, the sensor likely needs to be replaced. Contact PDS Columbo to obtain a replacement.