Epson B81306 series Servicehandleiding - Pagina 10

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2.1 TRANSPARENCY MECHANISM OPERATION

This

section describe the transparency mechanism and explains it works.

2.1.1 Carriage Movement Mechanism

transp

arency method is the carriage of light source movement method. The carriage

The

movement mechanism consists of lamp carriage assembly, carriage motor assembly, gear/lead

screw, roller and carnage home position sensor. Figure 2-1 shows the carriage movement

mechanism.

The carriage motor assembly drives the gear/lead screw. The mrriagemot or=sembly~ mounted

lamp carriage assembly. The lead screw is connected to the housing. When the carriage

on the

motor turns the gear, the carriage move the forward or backward in the housing smoothly via lead

screw. The carriage movement synchronizes with the scanner head movement.

The carriage home position sensor informs the CPU of scanner the carriage home position. The

sensor is photo-coupler type. The striker on the carriage active the sensor to indicate the carriage

home position.

Carriage Home Position Sensor

Carriage

Figure 2-1. The Carriage Movement Mechanism

Combination Gear

Operating

Principle

Assembly

'Roller

2-1