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07-25-2011 09:58 AM - edited 07-25-2011 12:10 PM
I am sorry but you are going to have to be much more specific with your issue.
If you are referring to a LaserJet 8150DN, then your Mac OS 10.7 system should be able to print to it just fine. The HP Print Driver Update for Mac OS 10.7 available through Apple Software Update contains all the components you need to print.
If your system was upgraded from Mac OS 10.6, it should also work with out issue.
Odds are that during the upgrade process some of the back end pieces may have gotten messed up. My suggestion is to try a reset print system and then re-add the queue for the LJ8150DN.
To reset the print system <right> click or <control> click on the blank space where the printer sare listed in the Print & Scan control pane. The select reset print system. This will delete all your existing print queues and reset the print system to all factory default settings.
When you re-add the print queue for the 8150DN it will be as if the printer was brand new on the system.