General Description SNLUS
800 Service
Manual
Table 1-6. Signal and Connector Pin Assignments (Continued)
Pin No.
Signal Name
I/o
Description
16
GND
Signal ground.
17
CHASSIS-GND
-
Chassis ground. (Both chassis ground and signal ground are
connected in the
ptinter.)
18
NC
Not
USed.
19-30
GND
Twisted-pair return signal ground.
31
INIT
I
If this signal goes LOW, the printer is initialized. The pulse
width of this signal must be 50 pS or more.
This signal goes LOW if the printer:
32 ERROR o
-
has a fatal error.
- runs out of paper.
33 GND .
Signal ground.
34
NC
.
Not
USed.
35
+5V
.
Pulled up to +5
Vthrough
1.0
KW
resistor in the printer.
36
-
.
Not used. (* Reserved.)
(-
Note: The direction of the signal is as viewed from the printer.
1-1o
Rev. A