Brother MFC5200C Service Manual page 71

(12) Remove the FFC stopper 1 from the rear side of the print head unit in the order of
shown below.
(13) Disconnect the head flat cable W (driver-head signal line) towards the rear.
(14) Unlock the connector of the head flat cable M (main-head power line) and disconnect it
upwards.
FFC stopper 1
Latch
NOTE: Do not touch the printing ends (nozzles) of the print head unit or the ink orifices of the
ink cartridges; doing so will not only stain your hands with ink but result in an ink jet-out
failure. Once you touch them, clean them with a dedicated cleaning stick and liquid.
NOTE: Be sure to put a head nozzle seal and filter seal on the print head unit as shown below.
Leaving the print head unit without those seals will dry up its printing ends and filters,
resulting in a damaged head.
Latch
Head flat cable M
(main-head power line)
Head flat cable W
(driver-head signal line)
Print head unit
Head filter seal
Print head unit
Head nozzle seal
6 -9
and as