Brother MFC5890CN - Page 89

3-38
Confidential
Power transmission routes of the ASF motor and paper feed motor
The rotational torque of the ASF motor is transmitted to the ASF/maintenance drive gear which
always meshes with the clutch gear L, as described in Section 3.2.2.2, [ 4 ].
When the mode switching lever is in the left position (normal SF or high-speed feed mode), the
clutch gear L also meshes with the ASF changeover gear which transmits the ASF motor
rotation via a gear train to the paper pull-in rollers.
The rotational torque of the paper feed motor
is transmitted via the PF roller gear L to the paper
feed roller that advances paper to the printing start position.
Right position (Purge mode)
Left position (ASF mode)
Mode switching lever
ASF motor
Idle gear 16
Clutch gear L
ASF changeover
gear
ASF idle gears 17
Paper pull-in gear shaft
Purge gear
Mode switching lever
Head/carriage uni
t
(Front)
ASF idle
gears 17
Paper feed motor
PF roller gear L
PF motor gear
Ejection idle gear
PF timing belt
Paper ejection roller
(3_25_BHL9_A3)
Clutch gear R
ASF/maintenance
drive gear
Paper pull-in
rollers
Paper pull-in
gear shaft
Paper feed roller