HP 400 manual Obstructions block, Paper path, Printer, return the printer for repair

	Table 5-6. Possible Causes for Paper Jams
Possible Cause	Solution
Paper is out-of-specification	Use paper that meets the specifications listed in chapter 1.
IN tray is too full	Make sure that the stack of paper in the IN tray is no more than 0.2 inch (5 mm) high.
Paper is too long	• Use only media sizes recommended in chapter 1.
	• Do not use continuous Z-fold paper in the printer.
Paper is not loaded correctly	Make sure the paper is not buckled. For more information, see “Loading Media” in chapter
	3.
Obstructions block	Look for obstructions in the paper path, both within the paper tray and within the printer
the paper path	itself. Open the access door and verify that the paper path within the printer is clear of any
	obstructions. Then lift the printer out of the paper tray and look for obstructions.
The printer may be faulty	• Try reloading paper in the paper tray. If it continues to have problems feeding paper into
	the printer, return the printer for repair.
	• If paper does not properly feed through the printer manually, the printer may be faulty.

Problem Resolution 5-15