The following information applies only to versions of the Chooser earlier than
3.1.
A Macintosh Plus or Macintosh 512K Enhanced often have difficulty initializing
the serial port for AppleTalk other than at power up.
This becomes obvious when you've physically connected AppleTalk to your system,
clicked on Connect AppleTalk in the Control Pannel (Apple menu) and your
LaserWriter or ImageWriter (with an AppleTalk card) connected to the network
still doesn't appear in the Chooser.
Try closing then reopening the Chooser; if your printer still doesn't display
in the Chooser, you'll need to power down and back on. After power back on,
you'll then be able to Choose any printer connected to your AppleTalk network.
If you still are unable to select your printers, perform the above steps again.
Additionally, make sure you've installed the necessary drivers with the
Installer: check the System Folder. There you should find drivers for each
of your printers. For example, if wish to print to a LaserWriter, then in the
System Folder you should find an icon named LaserWriter and one named
LaserPrep.