146 Chapter 8 Maintain the Océ TCS300 printerReplace a defective printheadNote: If you cancel the calibration, the printer restarts the calibration process whena new print job starts.Note: If the printer rejects the new printhead during the 'Replace printhead'procedure, remove the printhead, clean the contact area with a lintfree cloth andre-insert the printhead.Note: Also check the maintenance cassette after you replaced a printhead. (see‘How to remove the maintenance cassette’ on page 148) Check if all wipers arepresent and clean. Excessive ink remains on the wipers can damage the printheads.Wipe the wiper blades with a moist cloth to increase the lifetime of the printheads.