Scantron OpScan 4ES Operator's Manual page 182

Chapter : Recalibration
162
• Perform a Top Head Calibrate function
• Perform a Bot Head Calibrate function (if your
scanner is equipped with a bottom read head)
• Exit the background menu
Instructions for the above tasks are found in the pages
that follow.
Scantron OpScan 4ES and iNSIGHT 4ES Scanners