I have a printer HP Laserjet 2420dn pcl 6 on network which prints empty page on every second page can you give me solution to this problem

You need to go into the print driver on your Windows machine and go to the Device settings tab. One of the settings is to set whether the unit has a duplexer or not. It does not always set automatically.

Hi,
information about the cause:
PCL XL error pages that print from an HP LaserJet 1200, 1300, 2200, 2300, 3200 or 3300 series product when a PCL 6 printer driver is in use typically indicate a communication issue. Sometimes this issue is caused by an incompatibility between the Enhanced XL language and the software application.

You can find the solution for this error here:
(It's a long instruction page, I advise to copy the sections that refere to your OS to a separate document, so you don't miss any step)
URL to HP service page:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=1161389&prodTypeId=18972&prodSeriesId=1161389&objectID=bpl10637

Hi,

Please uninstall the current PCL driver and upgrade the same with UPD PCL5 (dont install PCL6) from http://www.hp.com/go/upd

Regards,
Nikhil

Hi,

Hope this helps you troubleshoot it.

Link

Regards.

I had a similar problem with the PCL driver. I fixed it by installing the "HP Universal Printing PS" driver instead.

I have found the solution. Quite simple. In the printers properties box select the general tab. Click on the on the printing preferences button. Selecting the Paper/Quality tab, observe the Print Task quick sets. These all need to have Default print settings selected. In our case, they were not. This enabled all applications to print correctly once again.

I think that Odyssey user is right it maybe that the print driver is not compatible with the program you are using goto hp.com or hp.co.uk and download the PCL 5e driver

Hope this helps you
Thanks J