Epson Stylus Color 800, Руководство по обслуживанию

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Operating Principles
Rev. A
2-1
2.1 Overview
This chapter provides information on the printer mechanism, electrical circuit, and ink system. The
operating principles for each mechanism in the printer mechanism is described individually. The
description for the electrical circuit is divided into 2 parts; C202 PSB/PSE board and C202 MAIN board.
2.2 Printer Mechanism Operating Principles
2.2.1 General Description
This printer is mainly composed of the printing mechanism, paper feed mechanism, carriage mechanism,
pump mechanism, and ASF mechanism. There are 3 motors, carriage motor (CR motor), paper feed
motor, (PF motor) and pump motor. Table 2-1 shows each motor and corresponding units and assemblies
driven.
Motor Unit/Assembly driven
PF motor PF roller assembly, CR lock lever
CR motor CR unit, Capping unit
Pump motor Pump unit, Capping unit, Wiper, ASF unit
When the PF Motor rotates clockwise, the torque is used to drive PF Roller assembly and release CR
Lock Lever, while the torque is used to set the CR Lock Lever when the PF Motor rotates
counterclockwise.
The CR motor transmit the torque via Timing Belt to shift the CR unit in the both right and left directions in
parallel with the Platen. The torque from the Pump Motor, switched by the disengage mechanism, is
transmitted to the ASF and the Pump motor. The figure below shows the structure block of the printer
mechanism.
Table 2-1. Motor and Unit/Assembly Driven
Carriage Mechanism
Print Mechanism
CR Motor
Slider Mechanism
Black Color
Pump Motor
PF Motor
Pump Mechanism
Disengage Mechanism
ASF Mechanism
CR Lock Mechanism
Paper Feed Mechanism
Figure 2-1. Printer Mechanism Block Diagram