Oki ES3640MFP Service & Troubleshooting Manual page 35

The following screen will appear.
Place the Kodak Gray Scale and Kodak Color Control Patches on to the Scanner
Calibration Page as shown below.
Now place the Kodak Gray Scale, Kodak Color Control patches and Scanner Calibration Page face
down on the scanner glass and press the Continue button in the previously mentioned Scanner
Calibration Setup window. The following screens will appear sequentially.