MLC87 or R45.6 Error Codes
The drill block sensor located at top of drill cylinder is not responding or needs to be adjusted. The red led light should activate on the sensor telling the machine that the drill block is back to its correct position.
With the drill block in the correct upper position loosen the screws on the sensor hold down and slowly move the sensor up or down until the led turns red. Retightening the hold down once led is on. This error should be resolved.