TroubleshootingService Manual 8-58.2 Print-Quality ProblemsBlank PageCompletely Black ImageExample Possible Cause Sequence of Repair ActionsDriver installation problem. Try printing a Demo Page.Check that the printer driver is installed correctly.Toner cartridge contacts are dirty ornot making good contact.Toner cartridge is empty or low (whenprinting a single color image).Check and clean the toner cartridge contacts.Re-seat the toner cartridge.Replace the toner cartridge.Transfer belt contacts are dirty or notmaking good contact or there is a faultytransfer belt.Check and clean the transfer belt contacts.Re-seat the transfer belt.Replace the transfer beltLaser cable harness plugs not seatedproperly or faulty laser unit.Verify the connectors on the laser unit and mainboard are properly seated (CN12).Replace the laser unit or harness as required.Toner transfer problem. Check all HV contacts and harnesses.Replace the HVPS.Example Possible Cause Sequence of Repair ActionsImaging Unit BIAS contacts are dirty ornot making good contact.Clean the contacts.Replace the imaging unit.Charge Voltage of the imaging unit isunstable.Replace the HVPS Board.
