Try a basic test from a command line:
NET USE LPT1 \\pdc\hpLaserJ3380
ECHO Test Print from a PC > LPT1
This willl send a single line of text to your printer that is attached to LPT1 via the redirected network connection.
If it does not work, then your LPT1 port is in a "Plug and Play" mode that will not allow print redirects. You will need to use the DEVCON.EXE utility to use a PNP port as a physical device. This brings back some memories.
For LPT1, you would type:
devcon disable *PNP0401
Then you would use the NET USE to attach to the printer. This may have to be done as a batch file since your port can revert back to PNP mode after a reboot.
To scan for ALL of the ports on your computer, type:
devcon find *
And for the available com/lpt ports, type:
devcon find =ports *pnp*
Refer to
The DevCon command-line utility functions as an alternative to Device Manager for full info and utility download.