Apple LaserWriter 12/640 PS - Manual (Page 126)

4 Double-click the LaserWriter 12/640 PS printer name.
The printer software automatically checks the printer’s options and selects the
correct settings.
5 Close the Chooser.
Designating the 500-sheet cassette and feeder as the preferred paper source
After installing a 500-sheet feeder, you can specify that the printer use the
500-sheet feeder as the preferred paper source. When you choose Auto Select
as the paper source in the Mac OS Print dialog box, the printer will draw
paper from the 500-sheet feeder if it holds the appropriate size paper. To
designate the 500-sheet feeder as the preferred source, you must manually
configure the printer software.
1 Select the desktop printer icon for the LaserWriter 12/640 PS printer.
2 Choose Change Setup from the Printing menu.
The LaserWriter Setup dialog box appears.
3 Click Auto Setup.
4 Select “Cassette (Optional)” from the Change pop-up menu.
5 Select “Installed and Preferred” from the To pop-up menu.
6 Click OK.
126 Chapter 5