2. Following the instructions on the label, rotate the knob until the appears in the hole. 3. Close the cutter cover. Cleaning the Optional MICR Mechanism MICA cleaning method (Recommended) * Combine these 2 procedures, if you encounter frequent MICR reading errors. The cleaning procedure During in the self test mode 1) Confirm to set a roll paper and a ribbon cassette to make use a printer mechanism properly. Troubleshooting 3-7 Cleaningpoint Use cleaning sheet Frequency M MICR head department sh oistened Cleaning eet 6000 times or for one month MICA system department A dhensive cleaning she 6000 times or for one et month