HP Color LaserJet Managed MFP M775 User Guide - Page 269
Internal print-quality-test s, Visually inspect the toner cartridge, Device Maintenance
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● Specks of toner are on the printed pages. ● Toner is smearing on the printed pages. ● Repeated marks occur on the printed pages. Use the following procedure to print a cleaning page. 1. From the Home screen on the product control panel, scroll to and touch the Device Maintenance button. 2. Open the following menus: ● Calibration/Cleaning ● Cleaning Page 3. Touch the Print button to print the page. 4. The cleaning process can take several minutes. When it is finished, discard the printed page. Internal print-quality-test pages Use the print-quality-troubleshooting pages to help diagnose and solve color print-quality problems. 1. From the Home screen on the product control panel, scroll to and touch the Administration button. 2. Open the following menus: ● Troubleshooting ● Print Quality Pages ● PQ Troubleshooting Pages 3. Touch the Print button. The product prints several print-quality troubleshooting pages. 4. To use the pages to solve the problem, follow the instructions on the print-quality troubleshooting Web site at www.hp.com/go/printquality/lj700colorMFPM775. Visually inspect the toner cartridge 1. Remove the toner cartridge from the product. 2. Check the memory chip for damage. 3. Examine the surface of the green imaging drum on the toner cartridge. CAUTION: Do not touch the imaging drum. Fingerprints on the imaging drum can cause print-quality problems. 4. If you see any scratches, fingerprints, or other damage on the imaging drum, replace the toner cartridge. 5. If the imaging drum does not appear to be damaged, rock the toner cartridge gently several times and reinstall it. Print a few pages to see if the problem has resolved. ENWW Improve print quality 255