Xerox 3450B Service Manual - Page 88

Print-Quality Troubleshooting The following table provides examples or descriptions of various image or printing defects that may be observed in the Phaser 3450 Laser Printer. The table also lists possible causes and solutions. Image Defect Possible Cause Solution No Image/Blank Prints ■ Seal tape was not ■ Ensure that sealing tape has Prints have no visible image removed from the cartridge. ■ Low or no toner been removed. ■ Verify Print Cartridge ground. ■ Verify continuity between the ■ Defective ground to cartridge ground and frame. the Print Cartridge. ■ Replace in the following order: ■ Main Board ■ Print Cartridge ■ Incorrect high-voltage output from the Power Supply Board. ■ Main Board ■ Power Supply Board ■ Laser Assembly Light Prints: All areas of the print are light ■ Media (paper) ■ Verify paper meets printer ■ Verify Remote Control specifications. Print 20 to 30 Panel settings. pages using the recommended ■ Seal tape was not paper. removed from the ■ Verify that the Remote Control cartridge. Panel is not set to Economode or ■ Low toner that Toner Density menu is not set to "light." ■ Transfer Roller ■ Ensure that the sealing tape has ■ Laser contamination or been removed. obstruction. ■ Verify low toner warning is not ■ Incorrect high-voltage displayed on front panel. Remove output. the Print Cartridge and shake, ■ Low ambient reinstall or replace. temperature (