Brother DCPJ525W Service Manual page 177

(9) Unlock the connector on the carriage PCB and disconnect the head flexible cable.
Note: After disconnecting the flexible cable, check that it is not damaged at its end or
short-circuited. When connecting the flexible cable, do not insert it at an angle. After
insertion, check again that it is not at an angle and then lock the connector.
(10) Release the lock spring and slightly pull up the front end of the carriage PCB. Then take the
carriage flat cables out of the cable guide (shown on
and release the hole provided in the film from the boss shown below.
(11) Take the carriage PCB ASSY out of the head/carriage unit and put it on the upper cover in
front of the head/carriage unit.
Head flexible cable
Carriage PCB ASSY
Film
Carriage flat cables
Upper cover
Hole
Boss
Head flexible cable
3-40
page 3-48) on the head/carriage unit
Pull here to unlock.
Head/carriage unit
Connector
Carriage PCB ASSY
Lock spring
Head/carriage unit
(3_033)
Confidential