Long-Period Storage - Brother MFC4820C Service Manual

6.2 LONG-PERIOD STORAGE

If the machine will be stored for a long period, substitute cyan ink for black ink in the black ink
tube according to the procedure given below.
This is because black ink is more volatile than color ink so that air bubbles are likely to collect in
black ink.
(1) Have two new cyan ink cartridges on hand.
(2) Plug the power cord into a wall socket.
(3) Make the machine enter the maintenance mode by pressing:
Menu/Set, *, 2, 8, 6 and 4 keys in this sequence.
(4) Pull the release lever towards you and open the scanner unit. Turn the scanner open sensor
actuator on the underside of the scanner unit towards you and keep it depressed with adhesive
tape.
This prevents the machine from detecting that the cover is open.
(5) Open the ink slot cover.
NOTE: Be sure to perform steps (4) and (5) in that order. Performing step (5) before step (4)
will cause Function code 76 not to be enabled in step (9).
Tape
Within 2
seconds
Scanner unit
Carriage
6 -4 9
Release lever R
Ink slot cover
Ink cartridges