Paper source defaults to Tray1 (Manual) when the existing paper source
(Tray2 or 3) runs out of paper. This then requires the intervention of
a user to press go after each page until the job finishes.

On our old NDPS system (NetWare5.1) the printer (the same one) will
wait until more paper is added to the automatic trays... and continue
with the same tray normally.

Is there a switch / setting that causes this?

Printer: HP LaserJet 8150
The configuration is iPrint server NetWare6.5 SP5 client on Windows2003
server SP1 (iPrint v4.2)

Thanks in advance.