C655 Main Circuit Operating Principle - Epson Stylus Photo 1390 Service Manual

EPSON Stylus Photo 1390/1400/1410

2.3.2 C655 MAIN Circuit Operating Principle

The C655 MAIN Board consists of the following circuits and sensors.
Logic Circuits (CPU-ASIC 2 in 1, PROM, SDRAM)
Circuits for controlling and driving Motors
(CR Motor, PF Motor, APG Motor, ASF Motor, Pump Motor)
Circuits for controlling and driving the Head
Interface Circuits (USB 2.0)
Sensor Circuits
RTC Circuit
DAC Converter Circuit
Regulator Circuit
Complex Circuit (IC8)
The Complex Circuit (IC8) that consists of EEPROM, RTC, and Reset circuit is
installed in the printer. Employing a large-capacity condenser for the Timer allows
to backup the time recorded at power-off for about a week after the power-off.
OPERATING PRINCIPLES Electrical Circuit Operating Principles
Revision B
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