Epson 680Pro Service Manual - Page 44
Main elements, Main Elements
UPC - 010343832138
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EPSON Stylus COLOR 680/777/77i 2.2.2.1 Main elements Table 2-7 shows the function of the each main elements on C383 MAIN. Table 2-7. Main Elements IC Location Function CPU E01A15CA IC9 PROM IC1 16bit CPU mounted on the MAIN board is driven by clock frequency 24MHz and controls the printer. • Capacity 8/16/32/64MB, Bus= 16 bit • Program for CPU RAM IC5, IC8 Bus= 16 bit, 4Mbit DRAM and 16Mbit DRAM EEPROM IC15 1kbit EEPROM • Default value setting • Parameter backup Reset IC IC16 Reset IC • For +5V; reset when +4.2V is detected • For +42V, reset when +33.2 is detected Common Driver IC10 Head drive control HIC • Generates head common voltage. Motor Driver IC12 CR motor drive IC Motor Driver IC13 PF motor drive IC Parallel I/F IC IC6 IEEE1284 parallel I/F transceiver IC. USB IC IC2, IC3 USB transceiver IC Operating Principles Electrical Circuit Operating Principles Revision B 44