Brother MFC9100C Service Manual page 49

1.2 Print Head Unit
During disassembly jobs (except when removing the purge unit, carriage rail or carriage
ASSY), the print head and all the four ink cartridges should be kept in place.
(1) Plug the power cord into a wall socket.
(2) Open the scanner unit and then press the Ink Management key.
(3) Press the 3 key.
The carriage automatically moves to the head replacement position (to the left from the home
position).
(4) Pull up all cartridge holders by pinching their clips with your fingers.
REMOVE ALL INKS
AND PRINT HEAD
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