Power Transmission For Four Operation Modes - Brother FAX-170 Service Manual

2.3.3

Power transmission for four operation modes

Depending upon the solenoid ON/OFF state and the motor rotation direction, the planetary
gear train switches the power transmission route for the four operation modes.
Solenoid ON/OFF state
Solenoid: OFF
Spring
Solenoid
Solenoid: ON
Clutch arm
Cutout X
(engaged with stopper
of arm A)
Planet
gear 20B
Section Y
III – 8
Motor rotation direction
Stopper of arm A
Motor gear
Sun gear 18/82
Arm B
Forward
Reverse
Planet
gear 20A
Arm A