Epson 4004677 - page 26

List of Figures
Figure2-1. PrinterMechanismBlock................................. 2-1
Figure2-2. StructureofPrinthead................................... 2-2
Figure2-3. PrinciplesofthePrintingOperation.........................2-3
Figure 2-4. Carriage Drive Mechanism . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 2-5
Figure2-5. PlatenGapLeverOperation.............................. 2-6
Figure2-6. PaperFeedMechanism.................................. 2-7
Figure2-7. InkSystemBlock....................................... 2-8
Figure2-8. PumpMechanismBlock ................................. 2-9
Figure2-9. SwitchLeverSet....................................... 2-9
Figure2-10. PaperFeedMechanismBlock........................... 2-10
Figure2-11. SwitchLeverReset................................... 2-10
Figure2-12. PumpOperation...................................... 2-11
Figure2-13. CapMechanism...................................... 2-12
Figure2-14. WipingMechanism.................................... 2-12
Figure2-15. BlockDiagramofthe Electrical Circuit..................... 2-13
Figure2-16. PowerSupplyCircuitBlockDiagram...................... 2-14
Figure2-17. MainControlCircuitBlockDiagram.......................2-15
Figure2-18. ResetCircuitBlockDiagram............................ 2-16
Figure2-19. SensorCircuitBlockDiagram........................... 2-16
Figure 2-20. Carriage Motor Circuit Block Diagram. . . . . . . . . . . . . . . . . . . . . 2-17
Figure2-21. SerialDataTransferProcedure.......................... 2-18
Figure 2-22. Paper feed Motor Drive Circuit Diagram . . . . . . . . . . . . . . . . . . . 2-19
Figure 2-23. Normal/Micro Dot Mode Switch Block . . . . . . . . . . . . . . . . . . . . . 2-20
Figure2-24. TrapezoidalDrive WaveForm...........................2-21
Figure 2-25. Printhead Drive Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . 2-21
Figure2-26. DMA ControllerOperation.............................. 2-22
Figure2-27. D-RAMCycleTimings.................................2-23
Figure2-28. JunctionMethod(CPU-DRAM).......................... 2-23
List of Tables
Table 2-1. Carriage Drive Motor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Table 2-2. Drive Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Table2-3. PlatenGapAdjustLeverPosition...........................2-6
Table2-4. PaperFeedDriveMotorSpecifications...................... 2-6
Table 2-5. Drive Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Table2-6. PumpMechanismOperation ............................. 2-11
Table2-7. DCVoltageDistribution.................................. 2-13
Table2-8. SerialDataContents.................................... 2-17
Table2-9. PaperFeedMotorDriveModes........................... 2-19
Table2-10.JunctionMethod(CPU-2CASDRAM) ..................... 2-23
2-ii Rev.-A