Sharp AM-900 Service Manual page 52

AM-900U
7.3. Fixed scan mode
Sheet scan drive side gear train
Scan unit drive side gear train
Planet gear B
7.4. Sheet scan mode
Scan unit drive side gear train
Planet gear B
Locking rib
Planet gear A
System gear biasing spring
Sheet scan drive side gear train
Planet gear A
(Scanner unit)
System gear biasing spring
Motor gear
(drive source)
Counterclockwise rotation: The scanner unit
moves toward the sheet scan position.
(Clockwise rotation: The scanner unit
moves toward the fixed scan position.)
System gear
Scan unit locking lever
Motor gear
(drive source)
Counterclockwise rotation: Sheets
are fed to the sheet scan section.
Scan unit locking lever
3 – 5
System gear