Specifications

CHAPTER 1
Introduction to the LaserWriter 16/600 PS Printer
Configuration Switch 9
Figure 1-5 Timing for Centronics interface
Configuration Switch 1
The LaserWriter 16/600 PS printer has a two-position configuration switch for setting
the parameters for the communication ports to a preset state or to a user-defined state.
This configuration switch allows users to return the printer to a set of preset communica-
tion parameters when a user-defined parameter set is causing difficulty communicating
with the printer.
When the switch is in the down position, the printer uses preset communication
parameters that should work for the majority of LaserWriter 16/600 PS printer users.
The preset communication parameters cannot be modified and persist when the switch
is in the down position. Changes made to the communication parameter set using the
Apple Printer Utility, LaserWriter Utility for Winodws, or low-level PostScript operators
are saved to nonvolatile RAM regardless of what position the switch is in, but the
changes are not used for any print job until the switch is moved to the up position.
32 /FAULT
(nDataAvail)
O Fault signal; asserted if there is a
printer problem
36 /SELECTIN
(1284 Active)
I
Table 1-3 Signal descriptions for the Centronics parallel port (continued)
Pin
number Signal name I/O Description
Data
/PSTROBE
PBUSY
/PACK
a cb
d
f
e
g