Xerox 4213 Programmer's Reference Manual page 27

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