Read Sharp AM-400 (serv.man7) Service Manual online
AM-400DE
3 – 6
7.5. Switching operation (1) from the sheet scan mode to the fixed scan mode
The planet gear A moves toward the scan unit drive side gear and
stops at the intermediate position because the pin A on the planet gear
A mounting arm is restricted its movement by the cam groove A. The
planet gear B moves into engagement with the system gear so that the
system gear rotates. Along with the rotation of the system gear, the
scan unit locking lever starts rotating in the release direction.
stops at the intermediate position because the pin A on the planet gear
A mounting arm is restricted its movement by the cam groove A. The
planet gear B moves into engagement with the system gear so that the
system gear rotates. Along with the rotation of the system gear, the
scan unit locking lever starts rotating in the release direction.
7.6. Switching operation (2) from the sheet scan mode to the fixed scan mode
Rotation of the system gear releases the pin A on the planet gear A
mounting arm from the cam groove A, and the planetary gear A is
engaged with the scan unit drive side gear. The scan unit starts mov-
ing toward the fixed scan side.
mounting arm from the cam groove A, and the planetary gear A is
engaged with the scan unit drive side gear. The scan unit starts mov-
ing toward the fixed scan side.
(Scanner unit)
Locking rib
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
Motor gear
(drive source)
Clockwise rotation:
switching operation
switching operation
Clockwise rotation:
switching operation
switching operation
Motor gear
(drive source)
Planet gear B
Planet gear A
System gear
Scan unit locking lever
Sheet scan drive side gear train
Scan unit drive side gear train
Locking rib
(Scanner unit)
System gear biasing spring
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