Switch Check tube detection sensor:

Use this switch to check the correct adjustment of the optical sensor that checks for the presence of sample tubes in the rack. See “Troubleshooting/ Tube sensor does not detect tubes” for further instructions.

Switch Always read barcode:

Use this switch to read the barcode at every position in the rack. This tube is correctly logged in the rack, even when the tube sensor is not detecting a tube. If the tube sensor is not detecting a tube and a barcode could also not be read, the tube position is logged as empty.

See Service manual for further instructions

Return to Position motor screen.