Brother MFC4820C Service Manual page 95

Installing the print head unit
(12) When installing a new print head unit, make sure that you attach the property label that comes
with it to the rear left side of the machine as described in step (11).
(13) When installing a print head unit that was previously removed, take it out of the upper and
lower head casing and remove the ink supply port cover.
(14) Lift up the front end of the carriage slightly, tilt the print head unit to the rear and insert it into
the carriage while aligning the ink supply ports of the print head unit with those of the carriage.
Push the carriage rail to the rear and fit the front end of the print head unit over the engine base
plate. (See the illustration on page 6-8.)
(15) Pull the head clamp spring out and rotate it to the rear so that the spring will be hooked over
bosses "a" and "b" (shown on page 6-8) and the print head unit clamped in place.
(16) Make sure that the FPC connector is unlocked. Connect the head flat cable to the print head
unit and then lock the connector. (See the illustration on page 6-7.)
(17) Place the paper width sensor in the sensor support of the print head unit.
(18) Snap the paper width sensor cover into place. (See the illustration on page 6-7.)
(19) Set the head cover back into place. (See the illustration on page 6-6.)
(20) Close the scanner unit.
(21) Set ink cartridges.
(22) Plug the power cord into an outlet.
The carriage will automatically move to the right end of the rail (to the home position).
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