Brother MFC5490CN - Engine Unit and Flushing Box

6-59
Confidential
6.1.13 Engine Unit and Flushing Box
During disassembly jobs, except when removing the ink refill ASSY or engine unit (including
the maintenance unit), leave the head/carriage unit in the machine.
Before removing the head/carriage unit, ink refill ASSY or engine unit, you need to replace all
four ink cartridges with the protective part (see page 6-3).
Note: If the main PCB is replaced without backing up the machine information, the flushing
box (and ink absorber box) should also be replaced.
Assembling Note: If you replace the engine unit, make adjustments specified in Chapter 7,
Section 7.2.
(1) If the MJ/PS shield unit has not been removed, you need to remove screw "h" shown on
page 6-37.
(2) Remove the chassis support by removing the screw.
Assembling Note: Insert the chassis support into the cutout provided in the right end of
the engine chassis as shown below.
(3) Remove the screw from the rear of the engine unit.
(4) Take the carriage motor harness, ASF motor harness, purge cam switch harness, and cap
lift cam switch harness out of the harness guides provided on the lower cover.
ASF motor harness
ASF encoder harness
Carriage motor harness
Chassis support
Lower cover
Purge cam switch harness
Cap lift cam switch harness
Taptite, cup B
M3x12
(6_72_1)
ASF motor harness
ASF encoder
harness
Ferrite cores
Purge cam switch
harness
Cap lift cam
switch harness
Carriage motor
harness