HP OfficeJet Pro 9720e User Guide - Page 63
Printer maintenance, Clean the scanner glass
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2. Scroll to Utilities and touch Tools. 3. Touch Reports, and then touch Status Reports. 4. Select a printer report to print and touch Print. Printer maintenance Clean different printer parts. Clean the scanner glass Dust or dirt on the scanner glass, scanner lid backing, or scanner frame can slow down performance, degrade the quality of scans, and affect the accuracy of special features such as fitting copies to a certain page size. WARNING! Before cleaning the printer, turn the printer off by pressing the Power button and unplug the power cord from the electrical socket. 1. Lift the scanner lid. 2. Clean the scanner glass and lid backing by using a soft, lint-free cloth that has been sprayed with a mild glass cleaner. Printer maintenance 57