HP PageWide Enterprise Color MFP 785 User Guide - Page 246
Clean the rollers, Try a different print driver
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NOTE: There are sequential levels of cleaning. At the end of each level, the printer produces a Print Quality Report. If streaks appear in any of the color bars on the report, continue with the next level of cleaning. If the problem is solved, select Cancel. TIP: Number each of the Print Quality Report pages in order to track print-quality improvement. Clean the rollers If the Print Quality Report shows smearing, follow these steps to clean the rollers. Step one: Multifunction printers only-Clean the document feeder rollers 1. From the Home screen on the printer control panel, select Support Tools. 2. Open the following menus: ● Maintenance ● Calibration/Cleaning ● Clean Document Feeder Rollers 3. Select Clean Now to begin the cleaning process, and then follow the on-screen prompts. Step two: Resolve Smear 1. From the Home screen on the printer control panel, select Support Tools. 2. Open the following menus: ● Maintenance ● Calibration/Cleaning ● Resolve smear 3. Select Start to begin the cleaning process. This process will take up to three minutes as a page feeds slowly through the printer. Retain this page for further print-quality evaluation. Try a different print driver Try a different print driver when printing from a software program and the printed pages have unexpected lines in graphics, missing text, missing graphics, incorrect formatting, or substituted fonts. Download any of the following drivers from the HP website: www.hp.com/support/pwcolor780MFP, www.hp.com/support/pwcolor785MFP, www.hp.com/support/colorpw774MFP, or www.hp.com/support/ colorpw779MFP. HP PCL.6 driver HP PCL 6 driver HP PCL-6 V4 driver This product-specific print driver is for Windows XP 32 bit, Vista 32 bit, and Server 2008 32 bit operating systems. Not all features or page sizes are supported. This product-specific print driver is for Windows 7, 8, 8.1, 10, Server 2008 64 bit, Server 2008 R2, Server 2012, Server 2012 R2, and Server 2016 operating systems. This product-specific print driver is for Windows 7, 8, 8.1, 10, Server 2008 64 bit, Server 2008 R2, Server 2012, Server 2012 R2, and Server 2016 operating systems. 234 Chapter 9 Solve problems ENWW