Epson LQ-570e, Руководство по обслуживанию

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EPSON
LQ-570e/LQ-580
Revision
C
Product
Description
Interface
Specifications
26
o
BUSY
signal is active (HIGH level) under the conditions below:
n
In
the process of receiving data
n
In
the condition of being input buffer full
n
In
the condition of being -INT signal active (low level)
n
During
hardware initialization
n
In
the condition of being -ERROR or PE signal is active (low level, high level,
respectively)
n
In
the self test mode
n
In
the adjustment mode
n
In
the default-setting mode
o
-ERROR
signal is active (low level) under the conditions below:
n
In
the condition of a paper-out error
n
In
the condition of a release lever error
o
PE
signal is active (high level) under the condition below:
n
In
the condition of a paper-out error
*
In/Out shows the direction of signal flow from the printer’s point of view.
Table
1-22. Connector Pin Assignment and Signals
Pin
No.
Signal
Name
Return
GND
Pin
In/Out Function
Description
1 -STROBE 19 In
Strobe
pulse. Input data is latched at falling
edge
of the signal.
2 DATA1 20 In
Parallel
input data to the printer.
bit0:LSB
3 DATA2 21 In
bit1
4 DATA3 22 In
bit2
5 DATA4 23 In
bit3
6 DATA5 24 In
bit4
7 DATA6 25 In
bit5
8 DATA7 26 In
bit6
9 DATA8 27 In
bit7:MSB
10 -ACKNLG 28 Out
This
signal (negative pulse) indicates that the
printer
has received data and is ready to accept
next
one.
11 BUSY 29 Out
This
signal’s high level means that the print is
not
ready to accept data.
12 PE 28 Out
This
signal’s high level means that the printer is
in
a state of paper-out error.
13 SLCT 28 Out
Always
at high level when the printer is
powered
on.
14 -AFXT 30 In Not
used.
31 -INIT 30 In This
signal’s negative pulse initializes printer.
32 -ERROR 29 Out
This
signal’s low level means the printer is in a
state
of error.
36 -SLIN 30 In Not
used.
18 Logic
H
-- Out
This
line is pulled up to +5V through
3.9
k
Ω
resister.
35 +5V -- Out
This
line is pulled up tp +5V through
1.0
k
Ω
resister.
17 Chassis -- -- Chassis
GND.
16,
33,
19-30
GND -- -- Signal
GND.
15,
34
NC -- -- Not
connected.
Table
1-22. Connector Pin Assignment and Signals
Pin
No.
Signal
Name
Return
GND
Pin
In/Out Function
Description