2.3 CONTROL CIRCUIT
The control circuit consists of the C166 MAIN board assembly and C165 PNL board This section describes
the major components and explains how the boards work.
2.3.1 Overview of Control Circuit Operation
The printer’s control circuit includes a TMP96C041AF CPU that runs at 14.74 MHz, an E05B13YA gate
array, a 1M bit PS-RAM (8-bit bus, less than 80ns) , a 2M bit PROM (8-bit bus, less than 120ns), and other
circuits. It oversees control of all the components in the printer. The following chart shows you a block
diagram of the control circuit.
Gate Array
CPU
CSF Drv.
C S F
Detector
PE-Rear
Detector
PE-Front
Detector
P-Width
Detector
H o m e
Detector
Release
Lev er
Detector
G a p
Lev er
Detector
+35V Voltage
Detector
Head Drv.
Head Temp.
Detector
ROM
RAM
EEPROM
Rest IC
PF Drv.
CR Drv.
Panel LED
Pow er SW
Parallel I/F
Type B I/F
5 V
G L
3 5 V
G P
IC2
IC 1
E0 5 B1 3
TMP 96C041A F
Q5 ~Q2 2
IC 12
SLA7 0 24 M
IC 11
UD N29 1 7EB
IC 8
IC 10
: Data Bus
: Address Bus
IC 3
IC 5
P/ S
Unit
PSC
PWDN
Figure 2-30 Control Circuit Block Diagram
Operating Principles
FX-2170 Service Manual
2-22
Rev.A
Содержание FX-2170 - Impact Printer
Страница 1: ...EPSON TERMINAL PRINTER FX 2170 SERVICE MANUAL EPSON 4005662 ...
Страница 5: ...REVISION SHEET Revision Issued Date Revision Page Rev A October 13 1995 1st issued ...
Страница 11: ...Figure 1 1 Exterior View of the FX 2170 Product Description FX 2170 Service Manual 1 2 Rev A ...
Страница 140: ...FX 2170 Service Manual Troubleshooting Rev A 5 19 ...
Страница 142: ......
Страница 156: ...Appendix FX 2170 Service Manual A 10 Rev A ...
Страница 157: ...A 4 CIRCUIT DIAGRAMS Figure A 2 C166 MAIN Board Assembly Circuit Diagram FX 2170 Service Manual Appendix Rev A A 11 ...
Страница 158: ...Appendix FX 2170 Service Manual A 12 Rev A ...
Страница 159: ...Figure A 3 C166 PSB Board Assembly Circuit Diagram FX 2170 Service Manual Appendix Rev A A 13 ...
Страница 160: ...Appendix FX 2170 Service Manual A 14 Rev A ...
Страница 161: ...Figure A 4 C166 PSE Board Assembly Circuit Diagram FX 2170 Service Manual Appendix Rev A A 15 ...
Страница 162: ...Appendix FX 2170 Service Manual A 16 Rev A ...
Страница 164: ...Figure A 6 C166 PSB Board Assembly Component Layout Appendix FX 2170 Service Manual A 18 Rev A ...
Страница 165: ...Figure A 7 C166 PSE Board Assembly Component Layout FX 2170 Service Manual Appendix Rev A A 19 ...
Страница 166: ...A 6 EXPLODED DIAGRAMS Figure A 8 FX 2170 Exploded Diagrams 1 Appendix FX 2170 Service Manual A 20 Rev A ...
Страница 167: ...Figure A 9 FX 2170 Exploded Diagrams 2 FX 2170 Service Manual Appendix Rev A A 21 ...
Страница 168: ...Figure A 10 FX 2170 Exploded Diagrams 3 Appendix FX 2170 Service Manual A 22 Rev A ...
Страница 169: ...Figure A 11 C S F Bin1 Exploded Diagrams 1 FX 2170 Service Manual Appendix Rev A A 23 ...
Страница 170: ...Figure A 12 C S F Bin1 Exploded Diagrams 2 Appendix FX 2170 Service Manual A 24 Rev A ...
Страница 171: ...Figure A 13 C S F Bin2 Exploded Diagrams FX 2170 Service Manual Appendix Rev A A 25 ...
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Страница 174: ...EPSON ...