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Epson LX-300

Epson LX-300
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List of Figures
Figure 2-1.
Figure 2-2.
Figure 2-3.
Figure 2-4.
Figure 2-5.
Figure 2-6.
Figure 2-7.
Figure 2-8.
Figure 2-9.
Figure 2-10
Figure 2-11
Figure 2-12
Figure 2-13
Figure 2-14
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Srintheadoperation
principles
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z-l
:arriage
Movement Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Friction Advance Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
~ush
Tractor paper Advance Mechanism . . . . . . . . . . . . . . . . . . . . 2-4
pu~Tractor paper Advance Mechanism . . . . . . . . . . . . . . . . . . . . . 2-5
Push-Pull Tractor PaperAdvance Mechanism . . . . . . . . . . . . . . . . . 2-6
Paper Path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .2-6
Ribbon Advance Gear Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
ColorShift Mechanism.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Platen GapAdjustment Mechanism . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Power Supply Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . 2-11
Control Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Power On Reset Circuit Diagram. .,..... . . . . . . . . . . . . . . . . . 2-13
HomePositionSensorCircuit Diagram . . . . . . . . . . . . . . . . . . . . 2-13
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Figure 2-15. PaperEndSensor Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . 2-14
(f
Figure 2-16
Figure 2-17
Figure 2-18
Figure 2-19
Figure 2-20
Release Lever Position Sensor Circuit Diagram . . . . . . . . . . . . . 2-14
K..d
Carriage Motor DriverCircuit Diagram . . . . . . . . . . . . . . . . . . . . . 2-15
Paper Feed Motor
DriverCircuit Diagram . . . . . . . . . . . . . . . . . . 2-16
Printhead Driver Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Parallel Interface Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Figure 2-21. Serial interface Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Figure 2-22
Figure 2-23
Figure 2-24
EEPROM Control Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . 2-18
CSMotorAssemblyCircuit Diagram . . . . . . . . . . . . . . . . . . . . . . 2-18
Color Ribbon SensorCircuit Diagram . . . . . . . . . . . . . . . . . . . . . 2-19
List of Tables
Table 2-1. CR Motor Assembly Specifications. .
Table 2-2. PF Motor Assembly Specifications . .
Table 2-3. Ribbon Advance Gear Linkage . . . .
Table 2-4. CS Motor Assembly Specifications. .
Table 2-5. Coloring Sequences . . . . . . . . . . . . .
Table 2-6. Power Supply Board. . . . . . . . . . . . .
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2-4
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2-7
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2-8
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2-8
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2-10
Table 2-7. Power Supply Output Voltages and Applications . . . . . . . . . . . . . . 2-10
Table 2-8. Functions of the Main
IC.
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Table 2-9. Carriage Motor Drive Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

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