AM-400 (serv.man7). Chapter 3 (Mechanical Description). - Sharp Copying Equipment Service Manual (repair manual). Page 9

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AM-400DE
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7.11. Switching operation (3) from the fixed scan mode to the sheet scan mode
Rotation of the system gear releases the pin A on the planet gear A
mounting arm from the cam groove A. The planet gear A moves to the
intermediate position between the scan unit drive side gear and the
sheet scan drive side gear. At this time, the belt stops moving, and the
scan unit stops accordingly just before the sheet scan position.
7.12. Switching operation (4) from the fixed scan mode to the sheet scan mode
Rotation of the system gear releases the pin B on the planet gear B
mounting arm from the cam groove B, and the planet gear B is disen-
gaged from the system gear. After the disengagement, the system
gear is kept rotating in clockwise direction by the system gear biasing
spring. The scan unit locking lever is moved by the system gear, and it
stops after pushing the scan unit to the locking rib. Keep rotating the
motor in the counterclockwise direction for the sheet feeding opera-
tion.
Counterclockwise rotation:
switching operation
Lever
Scan unit
Cam groove A
Pin A
Motor gear
(drive source)
System gear biasing spring
Planet gear B
Planet gear A
Scan unit locking lever
Sheet scan drive side gear train
Scan unit drive side gear train
System gear
Pin
(Scanner unit)
Locking rib
Counterclockwise rotation: Sheets
are fed to the sheet scan section.
System gear biasing spring
Scan unit drive side gear train
Sheet scan drive side gear train
Scan unit locking lever
System gear
Planet gear A
Planet gear B
(drive source)
Motor gear
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