Citizen CT-S801 User Manual page 44

9. Press button 3 (
"Calibrate BM" appears on the LCD.
10. Press button 4 (
Paper sensor calibration starts.
11. "Online" will appear on the LCD if paper sensor calibration is successful.
If paper sensor calibration fails, an error message will appear on the LCD.
CAUTION
 Do not allow more than 10 sheets of cut paper to collect in the paper catch tray (label
guide). More than 10 sheets of paper may cause a paper jam.
 Be sure to re-calibrate the paper sensor whenever you change to another type of black
mark paper.
) four times.
).
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Refer to 4.7 Error Messages
Refer to 3.13 Selecting a Paper Type