Epson ColorPage EPL-C8200 Service Manual page 38

EPSON ColorPage EPL-C8200
Pin #
1
2-9
10
11
12
13
14
15
16
17
18
19-30
31
32
33
34
35
36
Chapter 1 Product Descriptions
Table 1-22. Centronics Parallel Interface Pin Assignment
Signal Names I/O
STRBX I
DATA 1-8 I
ACKNLGX O
BUSY O
PE O
SELOT O
AUTOX I
NC -
GND -
CG -
NC -
GND -
INITX I
ERRX O
GND -
NC -
+5V -
SELINX I
Descriptions
Latch pulse used to read data. DATA is valid when the signal is LOW.
DATA 8 is MSB and DATA 1 is LSB.
An acknowledge pulse to the host that indicates the data from the host
computer has been received.
HIGH status indicates the printer is not ready to accept data.
Indicates paper empty status in paper tray or cassette selected.
Always HIGH.
When the signal is LOW, the printer automatically feeds a line as "CR" is
input. The "CR" is detected when the printer is turned on or the interface
selection is switched from the optional I/F to parallel I/F.
Not used.
Ground level for the twisted pair return.
Connected to the printer chassis. The printer chassis GND and the signal
GND are connected each other.
Not used.
Ground level for the twisted pair return.
When the signal is LOW, the STRBX signal is ignored.
The signal is LOW when the printer is in the following condition:
User maintenance is required.
Service maintenance is required.
Another type of error has occurred.
The printer is off line.
Ground level for the twisted pair return.
Not used.
Pulled up to +5V through 1K resistor.
Always LOW.
Revision A
1-23