AS-4000 User’s Guide Checking Colors Setting the Details for the Spot Color Check A Press the Maintenance menu, and then press Press Settings . 57 Setting the Registration Mark Sensor Amplifier Threshold Value U “Setting the Registration Mark Sensor Amplifier Threshold Value” on page 46 Press Press operator Start Printing the Job U “Starting Printing” on page 49 Check Before Printing U “Checking the Results of the Before Printing Check” on page 62 Check After Printing U “Checking the Results of the After Printing Check” on page 64 Compare Before/After Printing U “Checking the Results of Compare Before/After Printing” on page 65