Brother MFC620CN Service Manual page 170

Removing the head joint from the head/carriage unit
(5) While turning up the head flat cables, pull the joint leaf spring to the right to release the head
joint.
(6) Pull the head joint up and off the head/carriage unit, taking care not to contaminate the head
flat cables with ink remaining on the section where the head joint was mounted.
(7) Remove the head joint rubber (that is a part of the head/carriage unit but may be attached to the
head joint) and put it on a clean vinyl sheet while taking care not to contaminate it.
NOTE: Wipe off the ink remaining on the section where the head joint was mounted with a
clean, lint-free cloth.
NOTE: Wrap the head joint in a clean, lint-free cloth to prevent ink remaining in the ink
supply tubes from leaking and the machine from getting stained with leaked ink.
Joint leaf spring
Components on
the head joint
Head/carriage unit
Head flat cables
(turned up)
Head joint
Cable clamp
Ink refill ASSY
(consisting of a head joint,
ink supply tubes and ink cartridge base)
5-32
Joint leaf spring
Head joint
rubber
Confidential