Slow print come out with hp laserjet 4345 printer

49.XXXX is a fatal catch-all error. Could be firmware problem, network, print job. If the error occurs when you try to print, clear the print queue. If the error occurs when the printer is just sitting idle, reseat the formatter. Try powering on without the network cable attached. If it still happens replace the formatter. Could be a corrupt print job being sent to printer. Print something else.

print single page only, see where it stops. Suspect problem at output end. Check fuser

If your trying to send this through your email provider, most of them do not allow for Open Rely(anonymous sending) if you have the option of supplying credentials on the printer you will probably need to do that.

1.Most likely is the fuser assy, depending on what your page count is. 2.Could also be your toner cartridge especially if it is a reman

Dirt.
Open the ADF, the top of the scanner/copier.
The ADF glass is the thin strip of glass on the left. Damp cloth with windex or any glass cleaner. Scrub the strip of glass.

You are low on toner. Replace the cartridge.

Clean reverse rollers and duplex roller with rubber revitalizer, carefully !

Pull the plastic tape off of the cartridge

This is a firmware error. Switch off and on the printer. Upgrade the firmware. Try printing from different documents and applications.

you need to replace the chips so it will read the amount of pages printed by the toner cartridge.This chip is only for measuring how many pages printed.