EPSON Stylus COLOR 670
Revision A
Operating Principles
Electrical Circuit Operating Principles
46
2.2.2.1 Main elements
Table 2-8 shows the main elements on C301MAIN.
Table 2-8. Main Elements
IC
Location
Function
CPU
HD64F/2328F
IC1 (3.3V)
16bit CPU mounted on the MAIN board is driven
by clock frequency 24MHz and controls the
printer.
Gate Array
E05B70**
IC2
(3.3V & 5.0V)
• Motor Control
• Head voltage control
• EEPROM control
• Sensor supervise
• Timer IC supervise
• Parallel I/F, USB I/F control
PROM
IC3 (3.3V)
• Capacity 4/8/16MB, Bus= 16 bit EEPROM
• Program or p CG (Character
generator)
RAM
IC17 (3.3V)
Bus= 16 bit, 4Mbit DRAM
AT93C56
IC6 (5.0V)
2kbit EEPROM
• Default value setting
• Parameter backup
RTC-9810SA
IC5 (5.0V)
Reset/ Timer IC
• For +5V; reset when +4.3V is detected
• For +42V, reset when +35.5 is detected
• Timer function is attached powered by
lithium battery.
74V161284
IC9 (5V)
IEEE1284 parallel I/F transceiver IC
PDIUSBP11A
IC10 (3.3V)
USB Rev1 transceiver
LB11847
IC13
CR motor drive IC
LB11847
IC14
PF/ PUMP/ ASF motor drive IC
CXA2128S
IC15
Head drive control HIC
• Generates head common voltage.
Содержание Stylus Color 670
Страница 1: ...EPSON EPSONStylusCOLOR670 Color Inkjet Printer SEIJ99016 SERVICE MANUAL ...
Страница 6: ...Revision Status Revision Issued Date Description Rev A January 27 2000 First Release ...
Страница 10: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 30: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 52: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 66: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 99: ...C H A P T E R 5 ADJUSTMENT ...
Страница 122: ...C H A P T E R 6 MAINTENANCE ...
Страница 129: ...C H A P T E R 7 APPENDIX ...
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