Engine Mechanism; Carriage Unit - Epson 610 Service Manual

EPSON Perfection 610

2.1 Engine Mechanism

This section explains the engine functions and operating principles of the
EPSON Perfection 610. The engine mechanism has the two major parts; the
carriage unit (=scanning head) and the carriage move mechanism.

2.1.1 Carriage Unit

The carriage unit is composed of the following:


CCD sensor board (containing the CCD sensor)


Inverter board


Lamp (the light source)


Mirror and lens mechanism
Rear
Front
Inverter Board
Figure 2-1. Carriage Unit Component
Operating Principles
Lamp
CCD Sensor Board
CCD Sensor

CCD Sensor Board
This board includes the Color CCD line sensor (independent R,G,B) and
the sensor's control and driver circuits.

Inverter Board
This board generates voltage used to drive the lamp. The board pressures
up +24VDC and converts it from direct current to alternating current.

Lamp
A white cold fluorescent lamp is used as the light source.

Mirror and Lens Mechanism
Light emitted to the document reaches the CCD sensor via the mirror and
lens mechanism in the carriage unit, where the light's optical axis is
corrected. Note other scanners separates R/G/B components by switching
the light source between R, G, and B. In this scanner, however, it is
performed by the CCD sensor itself.
Front
Mirror 2
Mirror 4
Scanned Image
Figure 2-2. Mirror, Lens Mechanism
Engine Mechanism
Rear
Document
Lamp
Lens
Mirror 1
Rev. B
Mirror 3
CCD Sensor
Board
CCD Sensor
16