Lexmark X74 User's Guide - Page 27
Scanning, copying, and faxing troubleshooting, White lines appear in graphics or solid black areas
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White lines appear in graphics or solid black areas Clean the print cartridge nozzles. Going long periods without using your All-In-One can sometimes cause the print cartridge nozzles to become clogged. To clean the cartridge nozzles: 1 Open the Lexmark Solution Center (see page 9). 2 From the Maintenance tab, click Clean to fix horizontal streaks. Scanning, copying, and faxing troubleshooting Scanning or using a scanned image with a software program takes a long time or freezes the computer Lower the scanning resolution. The scanning resolution is much different than the printing resolution and is generally set much lower. You can achieve excellent results with a 300 dpi scanning resolution. To change your scanning resolution: 1 Open the Lexmark All-In-One Center (see page 9). 2 From the Scan... section, click See More Scan Settings. 3 Click Display Advanced Scan Settings. 4 From the Scan tab of Advanced Scan Settings, enter a scan resolution less than or equal to 300 dpi. 23