I hope you like your new HP printer. Did you see the site: http://www-912.ibm.com/s_dir/slkbase.NSF/acf2ee1e9d64b16e8625680b00020389/b44a2cf4ba778d83862568250053649f?OpenDocument&ExpandSection=27#_Section27
Your printer is a “host based” which according to the description is not compatible with much of what the iSeries does. The definition according to the site is:
Host-based The term “Host-Based” refers to the any printer language that supports printing from one of the Windows, Linux? or MacIntosh operating systems. Printers that use this printer data stream will not work with Host Print Transform (HPT) or a PC5250 Printer Definition Table (PDT) File.
Get a new printer that supports PCL.