A lot of users, including me, have had trouble getting answers to how to get PowerCADD 6 to print in OS 9 and OS X with the Epson 1520. Epson is no longer supporting the 1520 for either OS. Drivers called "Gimp-Print" are available from SourceForge. Getting the quality and performance accustomed to requires some tips not readily available, (See Printing with Epson Stylus Color 1520 in Mac OS 9.2.2 for PrintToPDF tips)
Solution for OS X . . .
Get a copy of Gimp-Print 4.2.5.
Get a copy of GhostScript v7.05.6 too.
(in case get a copy of Gimp-Print uninstaller v1.1)
You can get these from here.
Startup OS X with the 1520 printer turned on and connected.
Run Disk Utility in Utilities folder and select "Repair Permissions"
(Just in case, this should be routine after new system software installs)
Open the GhostScript disk image and run the installer.
Restart OS X
Open the Gimp-Print disk image and run the installer.
Restart OS X
Follow the preview doc's install instruction.
I initially had trouble establishing printing management services, similar to Epson Print Monitor. It appears that while in the Printer Setup double clicking the new printer item activates it. Try creating a desktop printer or look for "Print Center" in the Utilities folder. If either are missing then this problem exists. If this tip is bogus and you can't get it established email me.
I would do "Repair Permissions" again just to be sure all is well before trying to print.
Open a PCD drawing.
How to Print . . .
Getting printing speed and quality you are accustomed to requires two settings. For line weights, set lines to 25 to 50% smaller sizes. For hairline, i.e. .25 points, create a custom size set at .0625 points. For the best speed and quality for line drawings (plans), set "Printer Features" in the Print Dialog as follows . . .
Media : Plain Paper
Resolution : 360 DPI
(360 DPI Microweave is lot slower)
Dithering : Very Fast
If you have any Grayscales in the drawings set ColorSync to Gray Tone.
Help . . .
If you need help getting the drivers working, email me at artisan@backland.net. I may be able to Script changing lines to smaller widths, but that's a PowerCADD 6 expolaration for another day.
The Gimp-Print drivers are still being improved, so check for updates and read if they are applicable to the 1520 before installing.
The Espon 1520 isn't obsolete yet.