Operation; Scanner Motor (M1) - Toshiba e-STUDIO555 Service Manual

6. CCD board (CCD)
This is a board to convert the light led through the lens unit into the minute analog signal (optical-to-
electrical conversion), and transfer it to the SLG board (SLG).
7. SLG board (SLG)
This is a board to perform the image correction, such as the signal synthesis, signal amplification, A/
D conversion and shading correction.
6.3

Operation

6.3.1

Scanner motor (M1)

Scan motor
Wire pulley
Ø30.83/2GT-Z84
• Scanning an original on the original glass
This motor drives the carriages-1 and -2 through the timing belt and carriage wire. First, the scan
motor (M1) drives carriages-1 and -2 to their respective home positions. The home position is
detected when carriage-1 passes the carriage home position sensor (S6). When the [START] key is
pressed, both carriages start to move and scan the original on the glass.
• Scanning an original on the RADF
Carriage-1 stays at the shading position during the shading correction, and at the scanning position
during the scanning operation.
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Carriage wire
Motor pulley
2GT-Z24
Fig. 6-3
6 - 3
Carriage-1
Pulley for carriage-2
Ø22
Idler pulley
Ø22
Carriage-2
e-STUDIO555/655/755/855
SCANNING SECTION
6