Print issue after gui upgrade

Dear all,

I have completed the upgrade procedure of sap gui 740. After the upgrade, some users face with the problem when print some docs. On the ability to make some printer outputting strange symbols(garbage), and some nothing at all comes out. What could be the problem? From sap gui 730 output correctly prints.

SPAD output device "PDF" and device type PDF1 : PDF ISO Latin-1 4.6D+, is it correctly?