Epson EPL-9000, Руководство по обслуживанию

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General Description
Service Manual
Table 1-8. Parallel Interface Pin Assignments
I
Pin No.
1
Signal Name
STROBE is a strobe used to read data from the host
computer. The pulse width
must be more than
0.5&c.
Normally it is HIGH, and data is latched at the trailing edge of
this
STROBE
IN
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.
The most significant bit
is DATA8. The signal state
must be maintained for 0.5 on either side of the
STROBE signal active edge.
is an acknowledge with an approximate width
of 1 or
10 This signal goes LOW
when the data
reception is completed,
which indicates that the printer can
accept new data. with the BUSY signal is specified
through
The BUSY signal informs the host computer of the printer
state. When the
is HIGH. the minter cannot
2-9 DATA 1-8
IN
10
OUT
OUT
12
BUSY
The PE
signal indicates paper the standard tray
selected through or command, or for the optional PE OUT
OUT
paper Paper empty is indicated by HIGH.
-
Use in reverse mode.
13
14
SLCT
AUTO-FEED
IN used.
used.
around level.
15
16
NC
connected to the printer chassis. The printer chassis
and the signal
are connected to each other.
17
18
CHASSIS
NC
Not connected.
19-30
Ground level for the twisted pair return signal.
STROBE is when this is LOW. IN
31
32
This level goes LOW when the printer is:
●
out of paper
in paper jam state
●
in error state
off line
Same as for tins19 to 30.
ERROR
OUT
33
34
used.
Pulled to 1.0 resistance.
35
36 IN
Use
the reverse mode.
1-12
Rev.