Epson ActionLaser 1300 EPL-3000 Service Manual page 20

General Description
Signal Name
1 STROBE
2-9 DATA 1-8
10
11 BUSY
12
PE
13
14 AUTO-FEED
15 NC
16
17 CHASSIS GND
18 NC
19"30
31
ERROR
32
33
34 NC
35 +5
36
I
1-1o
STROBE is a strobe pulse used to read data from the host
computer. The pulse width must be more than 0.5 p.sec.
IN
Normally it is HIGH, and data is latched at the trailing edge of
this signal.
DATA 1 to 8 are parallel data bits. When the signal is HIGH,
the data bit is 1, and when it is LOW, the data bit is O.
IN The most significant bit (MSB) is DATA8. The signal state
must be maintained for 0.5 @cc. on either side of the
STROBE signal active edge.
of 1 or 10P. This signal goes LOW when the data
OUT reception is completed, which indicates that the printer can
accept new data. Timing with the BUSY signal is speci%d
through SelecType.
state. When the signal is HIGH, the printer cannot accept data,
The PE signal indicates paper empty for the standard tray
OUT selected through SelecTyps or command, or for the optional
paper cassette. Paper empty is indicated by HIGH.
OUT Use in reverse mode.
Not used.
IN
.
Not used.
Logic ground level.
Connected to the printer chassis. The printer chassis GND
-
and the signal GND are connected to each other.
.
Not connected.
.
Ground level for the twisted pair return signal.
The STROBE signal is ignored when this signal is LOW.
IN
This level goes LOW when the printer is:
. out of paper
OUT . in paper jam state
. in enor state
off line
.
Same as for pins19 to 30.
.
Not used.
Pulled up to +5V through 1.0 KQ resistance.
.
Use the reverse mode.
Description
Rev. A