HP Color LaserJet Pro MFP M478-M479 User Guide - Page 158
Check the EconoMode settings, Print, Properties, Preferences, Paper/Quality, Print Quality
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1. Reports 2. Print Quality Report 3. Touch OK to print the page. This page contains five bands of color, which are divided into four groups as indicated in the following illustration. By examining each group, you can isolate the problem to a particular toner cartridge. Figure 9-8 Print quality page Section 1 2 3 4 Toner cartridge Yellow Cyan Black Magenta ● If dots or streaks appear in only one of the groups, replace the toner cartridge that correlates with that group. ● If dots appear in more than one group, print a cleaning page. If this does not solve the problem, determine if the dots are always the same color; for example, if magenta dots appear in all five color bands. If the dots are all the same color, replace that toner cartridge. ● If streaks appear in multiple color bands, contact HP. A component other than the toner cartridge is probably causing the problem. Check the EconoMode settings HP does not recommend the full-time use of EconoMode. If EconoMode is used full-time, the toner supply might outlast the mechanical parts in the toner cartridge. If print quality begins to degrade and is no longer acceptable, consider replacing the toner cartridge. NOTE: This feature is available with the PCL 6 print driver for Windows. If you are not using that driver, you can enable the feature by using the HP Embedded Web Server. Follow these steps if the entire page is too dark or too light: 1. From the software program, select the Print option. 2. Select the printer, and then click the Properties or Preferences button. 3. Click the Paper/Quality tab, and locate the Print Quality area. 4. If the entire page is too dark, use these settings: 146 Chapter 9 Solve problems ENWW