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7.3 Description of Operation
7.3.1
Scanning motor
CRG-2 pulley
27
Idler pulley
27
Scanner motor drive is transferred to carriages 1 and 2 via the timing belt and the carriage drive wire.
Initially, carriage 1 moves to the home position. The actuation of the "home switch" determines the home
position of Carriage 1 assembly. During a PRINT cycle, carriages 1 and 2 are driven to scan the original
document.
7.3.2
Document motor
The document motor positions the "original width indicators" to indicate the placement position of the
original document when the reproduction ratio is changed from its default setting of 100% or when a
particular paper size is selected from any of the cassette trays.
7.3.3
Optical fan motor
The optical fan motors rotate to cool the optical unit during copying and stop rotation during standby.
Mar. 1999 © TOSHIBA TEC
CRG-2
CRG-1
Optical System (rear side)
Carriage drive wire
Wire windup pulley/motor deceleration pulley
39.75/3GT-Z28
7 - 5
Scaning motor
Motor pulley
3GT-Z24
Idle pulley
27
6570/5570 SCANNER
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