Xerox 3300MFP Service Manual - Page 131

Dark or Black Image Print-Quality Troubleshooting The printed image is dark. Check and Cause Solution No charge voltage in the Control Board. Clean the high voltage charge terminal. Charge voltage is not turned on due to the bad contacts between power supply in the side of the Print Cartridge and charge terminal of HVPS. Check the state of the connector which connects the Control Board and HVPS. If the solutions above did not correct the problem, replace the HVPS. Uneven Density Print density is uneven between left and right. Check and Cause Solution ■ The pressure force on the left and right springs of the transfer roller is not even. ■ The springs are damaged. ■ The transfer roller is improperly installed. ■ The transfer roller bushing or holder is damaged. The life of the Print Cartridge has expired. The toner level is not even on the developer roller due to the bad blade. Replace both the left and right Spring Holder. Problem with the print cartridge, replace the print cartridge and re-run the job. Problem with the print cartridge, replace the print cartridge and re-run the job. Phaser 3300MFP Service Manual 5-13