Product Description
1-18
EPSON FX-880/FX-1180 Service Manual
Table 1-25. Pin Assignments for Reverse Channel
Pin
Signal
Return
GND Pin
In/Out*
Functional Description
1
HostClk
19
In
Host clock signal
2 to 9
DATA1
∼
8
20 to 27
In
Parallel input data to the printer
10
PtrClk
28
Out
Printer clock signal
11
PtrBusy, DataBit-3,7
29
Out
Printer busy signal and reverse channel transfer
data bit 3 or 7
12
AckDataReq,
DataBit-2, 6
28
Out
Acknowledge data request signal and reverse
channel transfer data bit 2 or 6
13
Xflag, DataBit-1, 5
28
Out
X-flag signal and reverse channel transfer data
bit 1 or 5
14
HostBusy
30
In
Host busy signal
31
/INIT
30
In
Not used
32
/Data Avail,
DataBit-0, 4
29
Out
Data available signal and reverse channel
transfer data bit 0 or 4
36
1284-Active
30
In
1284 active signal
18
Logic-H
Out
This line is pulled up to + 5 V through 3.3K
Ω
resistor.
35
+5 V
Out
This line is pulled up to +5 V through 1.0K
Ω
resistor
17
Chassis
Chassis GND
16, 33,
19-30
GND
Signal GND
15, 34
NC
Not connected
Note:
* In/Out refers to the direction of signal flow from the printer’s point of view.
Interfaces
The FX-880 and FX-1180 include one built-in parallel interface card and one built-in card slot. The card
slot accepts a variety of Type-B optional interface cards, as indicated by the table below.
Table 1-26. Type B Optional Interface Cards
Catalog Number
Interface
C823051
Serial interface card
C823071
32 KB intelligent serial interface card
C823141
Coax interface card
C823151
Twinax interface card
C823572
Ethernet interface card
C823452
Parallel interface card
C823121
LocalTalk interface card
Содержание FX-1180 - Impact Printer
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Страница 60: ...Disassembly and Assembly 3 ii ESPON FX 880 FX 1180 Service Manual ...
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Страница 135: ...Appendix A ii EPSON FX 880 FX 1180 Service Manual ...
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Страница 144: ...Appendix EPSON FX 880 FX 1180 Service Manual A 9 Figure A 4 C229 PSE Board Component Layout ...
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