Toshiba e-STUDIO281c Service Manual page 148

3) Carriage-2
Carriage-2 mainly consists of the mirror-2, mirror-3, etc. and directs the reflected light from the mir-
ror-1 through the mirrors-2 and -3 to the lens.
This carriage is driven by the same scan motor (M1) as that for the carriage-1 at half the scanning
speed of the carriage-1 (The scanning distance is also half that of the carriage-1).
4) Lens unit
The light reflected from the mirror-3 is led to the CCD placed at the focal point of the lens which is
fixed in a position.
5) CCD driving PC board (CCD)
Processes such as signal amplification, signal integration and A/D conversion are applied on the
electrical signal which was converted by CCD.
6) Scanning section control PC board (SLG)
This is a board to perform the image correction, such as the shading correction and 3-line correc-
tion, and control the scan motor (M1).
7) Automatic original detection sensor (S1-5)
The size of an original placed on the glass is instantly detected using the automatic original detec-
tion sensors (S1-5) (APS sensor) fixed on the base frame without moving the carriage-1.
e-STUDIO281c/351c/451c SCANNER
Mirror-3
Fig.6-4
Lens unit
Fig.6-5
6 - 4
Mirror-2
CCD driving PC board
June 2005 © TOSHIBA TEC