4. TroubleshootingAuto Color Tone Adjustment• Diagnostics > Image Management > Auto Color Tone Adjustment > NormalPurpose To correct image quality when density of the image is poor. Normal TRC Control is recommended tobe performed after changing a unit, such as toner cartridge, imaging unit, and ITB, and reboot.Low Ima ge De ns ity Gra da tion Re production Fa ilureOperation Procedure Select “Execute” button.Verification Print out a test job and make sure the image quality has recovered.Reference Refer to print quality troubleshooting section.• Diagnostics > Image Management > Auto Color Tone Adjustment > FullPurpose To correct image quality when any OPC drum is replaced or the life of the OPC drum is changed.replacing any OPC drum or density of the image is poor. And this function will be performed whentemperature and/or humidity in the room changes suddenly.Operation Procedure Select “Execute” button.Verification Print out a test job and make sure the image quality has recovered.Reference Refer to print quality troubleshooting section.Copyright© 1995-2013 SAMSUNG. All rights reserved. 4-66