HP Pro 4300 C9H70UT C9H70UT#ABA Media transport problems, Multiple pages feed, Cause Solution

Media transport problems

If media is feeding incorrectly, use the information in this section to identify and resolve the problem.

Multiple pages feed

Table 49. Causes for multiple pages feeding

Cause	Solution
The tray 1 separation pad is worn.	Replace the separation-pad assembly.
Too much media (particularly envelopes) is loaded	Remove some of the media and resend the print job.
in tray 1.
The separation rollers in the tray are worn or	Replace the rollers. See “Tray 2 feed rollers” on
damaged	page 141 for tray 2, or “500-sheet feed rollers” on
	page 204 for a 500-sheet feeder, or “1,500-sheet
	feeder feed rollers” on page 214 for a 1,500-sheet
	feeder.
The media edges are locked together.	Flex the media stack before loading it into the printer.
	Do not fan the media.

Paper is wrinkled or folded

Table 50. Causes for wrinkled or folded paper (part one, paper path entrance)

Cause	Solution
The feed rollers or registration rollers are dirty or	Replace the affected rollers.
defective.
The paper path contains foreign substances or dirt.	Remove any foreign substances or dirt from the
	paper path.
The cartridge shutter open/close mechanism is	The shutter in the print cartridge should open as you
damaged.	insert the cartridge. If a shutter does not open,
(This can cause jams in which the media is	replace the print cartridge.
crumpled into an accordion fold under the print
cartridge.)
Table 51. Causes for wrinkled or folded paper (part two, paper path exit)
Cause	Solution
The fuser inlet guide is dirty.	Replace the fuser. See “Fuser” on page 162.
The fuser pressure roller is dirty or damaged.	Run several cleaning pages through the printer. See
	“Running the cleaning page manually” on page 56. If
	the problem persists, replace the fuser. See “Fuser”
	on page 162.

304 Troubleshooting Q2431-90912