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BugZero found this defect 3 days ago.
12.912, 12912, 312.912, 312912, 312-912-00, 31291200
Make sure the horizontal transport cover is closed If the horizontal transport cover is not closed using the handle, the cover will not close properly and may cause jams or errors. Power the printer off, wait two minutes and then power on. Remove trays 1 and 2 and check for paper stuck behind them. Remove paper from paper path. If the problem persists, contact Support for additional assistance.