HP Pro 4300 C9H70UT C9H70UT#ABA manual Paper transport errors, Malfunction errors

Paper transport errors

Table 78. Paper transport error troubleshooting

Possible cause	Recommended action(s)
Worn, dirty, or defective	● Inspect all of the stacker or stapler/stacker rollers. Clean any dirty rollers.
rollers.	If necessary, replace the stacker or stapler/stacker.
The feed guide is damaged,	● Inspect the feed guide. If, necessary, replace the stacker or stapler/
causing the leading edge of	stacker.
the media to be bent.
Obstruction in the paper path	● The paper path is contaminated. Clean the paper path. See “Stacker and
causes skewed print.	stapler/stacker paper path” on page 327.
	● Worn, dirty or defective rollers.Inspect all of the stacker or stapler/
	stacker rollers. Clean any dirty rollers. If necessary, replace the stacker or
	stapler/stacker.

Malfunction errors

Table 79. Malfunction error troubleshooting

Possible cause Recommended action(s)

No power

The stacker or stapler/stacker	● Inspect the stacker or stapler/stacker connector on the unit and on the
connector is not fully seated	printer. Verify that these connectors are not damaged, and that the
or is damaged.	stacker or stapler/stacker is installed correctly and fully seated.
	If the stacker or stapler/stacker is installed with the printer power on, you
	must turn the power off and then back on again for the stacker or stapler/
	stacker to operate.
	● Turn the printer power off. Remove and reinstall the stacker or stapler/
	stacker. Turn the printer power on again.
The stacker or stapler/stacker	● Replace the stacker or stapler/stacker.
PCA is defective.
No stapling (stapler/stacker only)
There are no staples in the	● Replace the stapler unit staple cartridge. See “Location of the stapler/
staple cartridge.	stacker stapler unit” on page 344.
The stapler unit is defective.	● Replace the stapler unit. See “Location of the stapler/stacker stapler
	unit” on page 344.
The print job contains more	● When using the stapler/stacker, limit the print job to a single page size.
than one paper size.
The stapler/stacker PCA is	● Replace the stapler/stacker.
defective.

330 Troubleshooting Q2431-90912