This problem is related to the configuration switch in the back of the printer. If you are changing the zone of the LaserWriter 16/600 PS from one zone to another zone, you must flip the configuration switch into the UP position prior to changing zones (if it already is not up), and leave it there. After changing the zone with the Apple Printer Utility, you should power-cycle the printer to store the change. Other than this anomaly, the configuration switch works as it is described in the manual and Apple Printer Utility.
There are only minor differences when the configuration switch is in the UP position verses being in the DOWN position. Besides the protocol used for the Parallel port the only differences are that "AutoSelect" is used more often in the Standard settings to make it easier for customers. If the only jobs going to the printer are PostScript, then either of the settings work fine. There is a diagram on page 313 of the LaserWriter 16/600 PS user manual that outlines the settings. There are no side-effects of leaving the switch in the UP position.
Article Change History:
02 Feb 1995 - Changed title and discussion to better fit the problem.
24 Jan 1995 - Replaced entire discussion
12 Dec 1994 - Added that the switch needs to stay in the UP position.
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