HP LaserJet Enterprise MFP M633 User Guide - Page 187
The printer picks up multiple sheets of paper, CAUTION
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5. Verify that the humidity in the room is within specifications for this printer and that paper is being stored in unopened packages. Most reams of paper are sold in moisture-proof wrapping to keep paper dry. In high-humidity environments, paper at the top of the stack in the tray can absorb moisture, and it might have a wavy or uneven appearance. If this happens, remove the top 5 to 10 sheets of paper from the stack. In low-humidity environments, excess static electricity can cause sheets of paper to stick together. If this happens, remove the paper from the tray, and flex the stack by holding it at each end and bringing the ends up to form a U shape. Then, rotate the ends down to reverse the U shape. Next, hold each side of the stack of paper, and repeat this process. This process releases individual sheets without introducing static electricity. Straighten the paper stack against a table before returning it to the tray. Figure 9-3 Technique for flexing the paper stack 1 2 6. Check the printer control panel to see if it is displaying a prompt to feed the paper manually. Load paper, and continue. 7. The rollers above the tray might be contaminated. Clean the rollers with a lint-free cloth dampened with warm water. Use distilled water, if it is available. CAUTION: Do not spray water directly on to the printer. Instead, spray water on the cloth or dab the cloth in water and wring it out before cleaning the rollers. The following image shows examples of the roller location for various printers. Figure 9-4 Roller locations for Tray 1 or the multipurpose tray The printer picks up multiple sheets of paper If the printer picks up multiple sheets of paper from the tray, try these solutions. 1. Remove the stack of paper from the tray and flex it, rotate it 180 degrees, and flip it over. Do not fan the paper. Return the stack of paper to the tray. ENWW Printer does not pick up paper or misfeeds 173
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