Read Sharp AM-300 (serv.man7) Service Manual online
AM-300DE
3 – 8
7.9. Switching operation (1) from the fixed scan mode to the sheet scan mode
When the scan unit's lever that comes back to the sheet scan position
pushes the system gear pin, the system gear starts rotating in clock-
wise direction.
pushes the system gear pin, the system gear starts rotating in clock-
wise direction.
7.10. Switching operation (2) from the fixed scan mode to the sheet scan mode
Due to the system gear rotation, the pin B on the planet gear mounting
arm is guided in the cam groove B, and the planet gear B is engaged
with the system gear. Along with the system gear rotation, the scan
unit locking lever moves toward the lock position.
arm is guided in the cam groove B, and the planet gear B is engaged
with the system gear. Along with the system gear rotation, the scan
unit locking lever moves toward the lock position.
Pin
Lever
Scanner unit
System gear
Scan unit drive side gear train
Sheet scan drive side gear train
Scan unit locking lever
Planet gear A
Planet gear B
System gear biasing spring
(drive source)
Motor gear
Counterclockwise rotation: The scanner
unit moves toward the sheet scan position.
unit moves toward the sheet scan position.
Scanner unit
Pin A
Pin B
Cam groove A
Cam groove B
Lever
Pin
System gear
Scan unit drive side gear train
Sheet scan drive side gear train
Scan unit locking lever
Planet gear A
Planet gear B
System gear biasing spring
(drive source)
Motor gear
Counterclockwise rotation: The scan
unit moves toward the sheet scan position.
unit moves toward the sheet scan position.
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