HP Pro 4300 C9H70UT C9H70UT#ABA Printing on the wrong side of the paper, Loaded wrong-side-up

Table 58. Drop outs and character voids

Possible cause	Recommended action(s)
Printing on the wrong side of the paper.	1. Check the arrow on the paper wrapper. Make sure that the
The label on the ream of paper indicates	paper loaded corresponds with the arrow pointing up in
which side to print on. The different	tray 1, or pointing down in the other trays.
surface properties of some papers	2. Turn over the stack of paper in the tray. Also try rotating the
might cause problems if the paper is	stack 180 degrees. Do not fan the stack.
loaded wrong-side-up.	3. Check the paper (or other media) type and quality. Replace
	the media and advise the customer to use the
	recommended HP media and to store it correctly.
The media surface is too rough.	● Use paper with the correct finish (smoothness) to meet
	HP specifications (see the HP LaserJet Printer Family Paper
	Specification Guide).
The media surface is too smooth for	● Use paper with the correct finish (smoothness) to meet
proper toner adhesion.	HP specifications (see the HP LaserJet Printer Family Paper
	Specification Guide).
Bad transparencies. Transparencies can	● Use hp-approved transparencies for monochrome LaserJet
have this problem because they are not	printers (see the HP LaserJet Printer Family Paper Specification
designed for proper toner adhesion.	Guide).
The printers operating environment	● Make sure the printer is installed in the proper environment.
does not meet specifications.	See “Environmental specifications” on page 7.
The fuser roller is dirty and is lifting part	● Process a cleaning page (see chapter 4). several pages might
of the image off of the paper.	be required if the fuser is very dirty.
Defective or nearly empty print	● Replace the print cartridge.
cartridge.
Wrong toner density setting.	● Access the print-quality menu at the control panel, and adjust
	the toner density setting. See “Print Quality submenu” on
	page 46. Make sure EconoMode is set to off.
Wrong fuser setting for media type.	● Access the configure device menu at the control panel, and
	change the fuser mode setting or choose another media type.
	See “Configure Device menu” on page 44.
Bad transfer roller. If the transfer roller	● Clean the transfer roller using a dry, lint-free cloth. Do not
has finger oils on its surface, is dirty or	touch the transfer roller with your fingers. If the problem persists,
worn out, this problem can occur.	replace the transfer roller. See “Transfer roller” on page 138.
Poor high-voltage contact between the	● Inspect the contacts and clean them if they are dirty. Replace
power supply and the print cartridge or	them if they are damaged.
transfer roller.
The power supply is defective (low	● Replace the power supply. See “Power supply” on page 188.
transfer voltage).

Q2431-90912 Chapter 7 Troubleshooting 315