Brother MFC260C Service Manual page 76

(2) Carriage lock mechanism
This mechanism locks the head/carriage unit to prevent the head nozzles from getting out of the
head cap unit accidentally due to external vibration or impact when the machine is not printing,
when the power is off, or during transport.
Driving the purge cam causes the carriage lock to pop up in order to lock the head/carriage unit
when the head caps are tightly pressed against the ink-jet units.
(3) Purge mechanism
Driving the purge cam to the pump switching unit's black or color ink drain position reverses the
paper feed motor and activates the tube pump, producing negative pressure to drain the air and old
ink from the head nozzles and channels into the ink absorber box.
Air vent tube
Purge bevel gear
Tube pump
Purge cam
Carriage lock
Pump switching unit
3-25
Maintenance unit
Purge cam
Black drain tube
Main drain tube
(Front)
(3_09)
Main drain tube
Opening tube to
the atmospheric air
Color drain tube
Confidential
(3_10)