Epson Stylus PRO 7000 Service Manual page 25

EPSON Stylus Pro 7000
Table 1-16. Connector Pin Assignments and signals - Forward
Pin Signal Return In/
No. Name Pin Out
Data reception pulse. Data is read at the falling
1 -STROBE 19 I
edge of this pules.
The DATA0 through DATA7 signals represent
data bits 0 to7, respectively. Each signal is at
DATA0~7
2-9 20-27 I
high level when data is logical 1 and low level
when data is logical 0.
This signal is a negative pulse indicating that
-ACKNLG
10 28 O
the printer can again accept data.
HIGH means the printer cannot receive data.
BUSY This occurs when the printer is receiving data
11 29 O
or when the printer is in an error state.
12 PE 28 O HIGH means no paper is loaded.
SLCT Always HIGH when the printer is on.
13 28 O
-AFXT Not used
14 30 I
NC Not connected
15 - -
16 GND Ground for twisted pair return
Chassis
Ground for frame/body
17
GND
Logic H Pulled up to +5V via 3.9Kohm
18
19-30 GND Ground for twisted pair return
Pulse width of 50uS or more means LOW
-INIT pulse, and the falling edge of LOW signal
31 30 I
causes the printer to initialize.
-ERROR LOW means printer error
32 29 O
GND Ground for twisted pair return
33 ---- ----
Product Description
Channel
Functional Description
Table 1-16. Connector Pin Assignments and signals - Forward
Pin Signal Return
No. Name Pin
NC
34 ----
+5V
35 ----
-SLIN
36 30
Note: In (I) and Out (O) refer to the direction of signal flow from the printer's point
of view.
Interfaces
Channel (continued)
In/
Functional Description
Out
Not connected
----
HIGH during normal operation. Pulled up to
O
+5V via 1.0Kohm
Not used
I
Revision B
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