Taking Print of PO from tcode ME22N/ME23N

Dear Friends,

I have an issue in taking the print of Purchase order from tcode ME22N/ME23N,

After the approval of the PO, i can take the print out of the PO form the T code ME9F,

However am not able to take the print out of PO from the t code ME22N/ME23N,

In path : ME22N - Print Preview - Text - Print

Here the print button in in display(gray) mode, is there any configuration to activate this button so that i can take the Print out without using the tcode ME9F.

In did the print determination with out put type NEU, medium -1, application - EF, function - VN, date/time 3 and with language - EN.

Regards

shashidhar