Epson FX-870/1170 manual 114

Principles of Operation

Figure 6-8. Push-pull Tractor Operation Using the

Rear Paper Entrance ........................................................

Figure 6-9. Push-pull Tractor Operation Using the

Front Paper Entrance .......................................................

Figure 6-10. Release Lever ....................................................................

Figure 6-11. Release Lever Setting Functions ......................................

Figure 6-12. Paper Path for Friction Feeding Using the

Top Entrance .....................................................................

Figure 6-13. Paper Path for Push Tractor Feeding Using the

Rear Entrance .....................................................................

Figure 6-14. Paper Path for Pull Tractor Feeding Using the

Rear Entrance ...................................................................

Figure 6-15. Paper Path fbr Push-pull Tractor Feeding Using the

Rear Entrance .....................................................................

Figure 6-16. Paper Path for Pu11 Tractor Feeding Using the

Bottom Entrance .................................................................

Figure 6-17. Paper Path for Friction Feeding Using the

Front Entrance ..................................................................

Figure 6-18. Paper Path for Push Tractor Feeding Using the

Front Entrance ....................................................................

Figure 6-19. Paper Path for pull Tractor Feeding Using the

Front Entrance ..................................................................

Figure 6-20. Paper Path for Push-pull Tractor Feeding Using the

Front Entrance ....................................................................

Figure 6-21. Ribbon Advance Mechanism .............................................

Figure 6-22. Power Supply Circuit Block Diagram ...............................

Figure 6-23. Control Circuit Block Diagram .........................................

Figure 6-24. Data Flow ..........................................................................

Figure 6-25. Power On Reset Circuit ....................................................

Figure 6-26. Sensor Circuit Block Diagram ..........................................

Figure 6-27. Carriage Motor Drive Circuit ...........................................

Figure 6-28. Paper Feed Motor Drive Circuit .......................................

Figure 6-29. Printhead Drive Circuit ....................................................

Figure 6-30. Parallel Interface Circuit ..................................................

Figure 6-31. E2PROM Control Circuit ...................................................

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List of Tables

Table	6-1.		Paper Feed Methods and Paper Entrances ........................	6-5
Table	6-2.	Ribbon Advance Gear Linkage .........................................		6-18
Table 6-3.			Power Supply Input Voltage and Fuse Rating.. ...............	6-19
Table	6-4.		Power Supply Output Voltages and Applications ............	6-19
Table	6-5.		Functions of Main Components of C094 MAIN ...............	6-24

6-ii Epson FX-870/1170