Epson DFX-9000 Service Manual page 33

Serial impact dot matrix printer
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Epson DFX-9000
Table 1-20. Connector pin assignment, forward channel (continued)
Signal
Return
Pin No.
name
GND Pin
11
BUSY
29
12
PE
28
13
SLCT
28
14
-AFXT
30
31
-INIT
30
32
-ERROR
29
36
-SLIN
30
18
Logic H
-
35
+5 V
-
17
Chassis
-
16, 33
GND
-
19-30
15, 34
NC
-
* In/Out denotes the signal flow direction from the printer.
Product Description
In/Out*
Function description
Out
This signal, when high, means that the printer is not ready to accept data.
Out
This signal, when high, means that the printer has a paper-out error.
Out
Always high (active) when the printer is powered on.
In
Not used.
In
This signal's negative pulse initializes the printer.
Out
This signal is low when the printer has error.
In
Not used.
Out
This line is pulled up to +5 V through a 3.9 kΩ resistor.
Out
This line is pulled up to +5 V through a 1.0 kΩ resistor.
-
Chassis GND
-
Signal GND
-
Not connected.
Basic specifications
Revision B
26

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