HP LaserJet Enterprise MFP M637 User Guide - Page 254
Calibrate the scanner, When using the document feeder
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3. Clean the scanner glass (callout 1) and the document feeder strips (callout 2, callout 3) with a soft cloth or sponge that has been moistened with nonabrasive glass cleaner. CAUTION: Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon 3 tetrachloride on any part of the printer; these can damage the printer. Do not place liquids directly on the glass or platen. They might seep and damage 2 the printer. NOTE: If you are having trouble with streaks on copies when you are using the document feeder, 1 be sure to clean the small strips of glass on the left side of the scanner (callout 2, callout 3). View a video of cleaning the document feeder glass and flatbed glass. 4. Dry the glass and white plastic parts with a chamois or a cellulose sponge to prevent spotting. 5. Connect the power cable to an outlet, and then press the power button to turn the printer on. Calibrate the scanner Calibration is a process that optimizes scan quality. NOTE: When using the document feeder, make sure to adjust the guides in the input tray so they are against the original document. 1. From the Home screen on the printer control panel, navigate to the Support Tools application, and then select the Support Tools icon. 2. Open the following menus: a. Maintenance b. Calibration/Cleaning c. Calibrate Scanner 3. Touch the Start button to start the calibration process. Follow the on-screen prompts. 4. Wait while the printer calibrates, and then try copying again. 246 Chapter 10 Solve problems ENWW