HP 2420 Service Manual - Page 187
Clearing jams, Avoiding jams, Table 7-3. Common causes of jams
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Clearing jams Occasionally, media can become jammed during a print job. The following are some of the causes: ● Trays are loaded incorrectly or overfilled. ● Tray 2 or tray 3 is removed during a print job. ● The top cover is opened during a print job. ● The media that is being used does not meet HP specifications. ● The media that is being used is outside of the supported size range (see Media specifications). Avoiding jams Use this table to help avoid specific types of jams. Table 7-3. Common causes of jams Cause Solution The print media does not meet HP recommended media storage and use specifications. Use only media that meets HP specifications. See chapter 1 in this manual or the HP print media guide (available at http://www.hp.com/support/ljpaperguide) for media recommendations. A supply item is installed incorrectly, which causes repeated jams. Verify that the print cartridge and the fuser are correctly installed. You are reloading paper that has already passed through a printer or copier. An input tray is loaded incorrectly. Do not use media that has been used previously in a printer or copier. Remove any excess media from the input tray. Make sure that the stack of media fits below the indicators inside of the tray. The print media is skewed. The tray guides are not adjusted correctly. Adjust the guides to hold the media firmly in place without bending it. If media heavier than 120 g/m2 (32 lb) is loaded into tray 2, tray 3, or tray 4, the media might skew. The print media is binding or sticking together. Remove the media and flex it, rotate it 180 degrees, or flip it over. Reload the media into the tray. Do not fan media. The page is removed before it settles into the output bin. Wait until the page completely exits the output delivery assembly before you attempt to remove it. When you are using the duplex print feature, the page is removed before the second side of the document is printed. Print the document again. During the duplex operation, the page will partially protrude from the output delivery assembly (when the page is being reversed). Do not attempt to grab or remove the page. Wait until the page completely exits the output delivery assembly before you attempt to remove it. The print media is in poor condition. Replace the print media. ENWW Clearing jams 173