Brother MFC5890CN Service Manual page 206

(14) Take out the ink supply tubes routed on the lower cover.
(15) If the main PCB has not been removed, disconnect the ink cartridge detection sensor
harness and the ink empty sensor harness from the main PCB.
(16) Release the harnesses from the cable guide (see the illustration below). Then lift the ink
refill ASSY up and out of the lower cover
Note: On the back of the ink refill ASSY is an ink foam that may be stained with ink. If it
is excessively stained, replace it.
Ink supply tubes
Black
Yellow
Cyan
Magenta
Cable guide
Tube guide
Lower cover
Magenta
Cyan
Assembling Note: After mounting the ink refill ASSY, route the ink supply tubes on the
lower cover, aligning the four colors in the order as shown above.
Yellow
Black
6-51
Head joint
Ink cartridge
detection sensor
harness
Lower cover
(Rear)
Ink foam in this case
Ink cartridge detection
sensor PCB
Ink refill ASSY
Ink empty sensor
harness
Tube guide
Sponge
(6_55)
Confidential