Phaser 3140/3155/3160 Printer Service Manual 5-19Print-Quality TroubleshootingVertical White LinesThere are faded or completely non-printed lines along the page in the processdirection. Possible causes include dust or debris blocking the path between theLaser Unit and Print Cartridge, or a build up of debris on the OPC drum cleaningblade.Initial Actions• Clean the Laser Unit window.• Ensure there is no dust or debris on the Print Cartridge or Fuser components.Troubleshooting Reference TableApplicable Parts Example Print■ Print Cartridge, PL1.0.12■ Transfer Roller, PL1.0.8■ Laser Unit, PL6.0.79Troubleshooting Procedure TableStep Actions and Questions Yes No1 Check the Print Cartridge life usage.Is the Print Cartridge empty?Replace thePrint Cartridge(page 8-6).Go to step 2.2 Check the Laser Unit window.Is there contamination on the LaserUnit window?Clean the LaserUnit window.Go to step 3.3 Check the Print Cartridge for debris.Is there any debris on the OPCdrum?Clean thedrum.Go to step 4.4 Check the OPC Drum on the PrintCartridge for damage.Is the OPC Drum damaged?Replace thePrint Cartridge(page 8-6).Go to step 5.Vertical Blank Lines
