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INTERFACES
Table 1-2. Centronics signals and pin assignments
(continued)
Pin Direction Signal Description
17 Chassis ground
18 From printer +5V (standard Centronics)
19-
29
0 volts TWP returns All at Logic ground.
30 0 volts INIT ground
31 To printer INIT L The 4213 ignores this signal.
32 From printer ERROR L This signal is low when the printer is in
an error state.
33 Open (standard Centronics)
34 Not used
35 Ground (standard Centronics)
36 Not used
1
These signals are the 1st and 8th bits of parallel data and are
active high for a logical 1.
XEROX 4213 LASER PRINTER PROGRAMMER REFERENCE 1-5