Epson DFX-9000
Revision B
Product Description
Basic specifications
28
* In/Out refers to the direction of signal flow from the printer side.
5
DATA4
23
In
bit 3
6
DATA5
24
In
bit 4
7
DATA6
25
In
bit 5
8
DATA7
26
In
bit 6
9
DATA8
27
In
bit 7: MSB
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
-DataAvail / 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 a 3.9 k
Ω
resistor.
35
+5 V
-
Out
This line is pulled up to +5 V through a 1.0 k
Ω
resistor.
17
Chassis
-
-
Chassis GND
16, 33
19-30
GND
-
-
Signal GND
15, 34
NC
-
-
Not connected.
Table 1-21. Connector pin assignment, reverse channel (continued)
Pin No.
Signal name
Return GND
Pin
In/Out*
Function description
Содержание DFX-9000
Страница 1: ...EPSONDFX 9000 Serial Impact Dot Matrix Printer SEDM04003 SERVICE MANUAL ...
Страница 8: ...C H A P T E R 1 PRODUCT DESCRIPTION ...
Страница 61: ...Epson DFX 9000 Revision B Product Description Dimensions and weight 54 ...
Страница 62: ...C H A P T E R 2 OPERATING PRINCIPLES ...
Страница 99: ...Epson DFX 9000 Revision B Operating Principles Circuit operation 92 ...
Страница 100: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 103: ...Epson DFX 9000 Revision B Troubleshooting Overview 96 3 1 3 Power on initialization sequence Main ...
Страница 104: ...Epson DFX 9000 Revision B Troubleshooting Overview 97 Mechanism initialization e e e e e ...
Страница 107: ...Epson DFX 9000 Revision B Troubleshooting Overview 100 PAPER FEEDING FF APG APPROACH ...
Страница 130: ...C H A P T E R 4 DISASSEMBLY AND ASSEMBLY ...
Страница 217: ...Epson DFX 9000 Revision B Disassembly and Assembly PULL TRACTOR UNIT L PULL TRACTOR UNIT R 210 ...
Страница 218: ...C H A P T E R 5 ADJUSTMENT ...
Страница 263: ...Epson DFX 9000 Revision B Adjustment Additional functions 256 ...
Страница 264: ...C H A P T E R 6 MAINTENANCE ...
Страница 286: ...C H A P T E R 7 APPENDIX ...
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Страница 324: ...EPSON DFX 9000 Revision B Appendix Component Layout 317 7 4 Component Layout ...
Страница 333: ...EPSON DFX 9000 Revision B Appendix Parts list 326 ...