Epson DFX-9000
Revision B
Operating Principles
Circuit operation
79
Table 2-7. Major IC elements
SoC ASIC
The SoC (System on Chip) ASIC is a one-chip custom gate array,
consisting of a 32-bit RISC CPU, associated standard peripheral control
circuits, and custom circuits specific to the control and operation of a
dot-matrix printer.
The peripheral control circuits on the ASIC include a Bus control unit, a
DMA controller, an Interrupt controller, a Timer, a Serial I/F, an A/D
convertor, and 8 KB of RAM.
Figure 2-23. SoC ASIC internal block diagram
Location
Name
Function (summary)
LSI1
SiX55513
(SoC ASIC)
ASIC coupled with CPU
Memory control
I/O Control (External I/F ports)
IC1
MBM29LV160
Flash memory (16 MB)
IC3
MSM51V18165F
D-RAM (16 MB)
IC9
74VHC161284MTD
IEEE-1284 Bi-directional
communication control IC
IC11
MAX3243
Serial port driver IC
LSI2
MB87L5090
Mechanism Control ASIC (printer
mechanism controller)
REG1
SI-3033C
3.3V on-board regulator
TA1 to
TA9
SDH02
Head driver
HIC1
SLA7025
LF motor driver
HIC2,
HIC3
A3953SLB
RF motor driver
TA10
STA485A
OC motor driver
TA11
STA485A
HCPP motor driver
TA12
STA485A
ATPC motor driver
IC18
LB11820M
SP motor driver
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 ...