HP LaserJet Enterprise MFP M634 User Guide - Page 227

Table 9-10 Output defects Sample Description Possible solutions Printed pages have curled edges. The curled 1. edge can be along the short or long side of the paper. Two types of curl are possible: 2. ● Positive curl: The paper curls toward the printed side. The defect occurs in dry environments or when printing high-coverage pages. ● Negative curl: The paper curls away from the printed side. The defect occurs in high-humidity environments or when printing low-coverage pages. Reprint the document. Positive curl: From the printer control panel, select a heavier paper type. The heavier paper type creates a higher temperature for printing. Negative curl: From the printer control panel, select a lighter paper type. The lighter paper type creates a lower temperature for printing. Try storing the paper in a dry environment prior to use, or use freshly-opened paper. 3. Print in duplex mode. 4. If the issue persists, go to support.hp.com. The paper does not stack well in the output 1. tray. The stack might be uneven, skewed, or the pages might be pushed out of the tray 2. and onto the floor. Any of the following conditions can cause this defect: 3. ● Extreme paper curl ● The paper in the tray is wrinkled or deformed 4. Reprint the document. Extend the output bin extension. If the defect is caused by extreme paper curl, refer to the troubleshooting steps for "Output curl." Use a different paper type. ● The paper is a non-standard paper type, such as envelopes ● The output tray is too full 5. Use freshly-opened paper. 6. Remove the paper from the output tray before the tray gets too full. 7. If the issue persists, go to support.hp.com. 214 Chapter 9 Solve problems ENWW