Brother MFC-3340CN Service Manual page 132

Removing the carriage PCB and head flat cables
(3) Disconnect the head flat cables 1 and 2 from the main PCB and pull them out to the rear
through the opening provided in the lower cover as shown below.
NOTE: Take care not to drop the flat core from the head flat cables.
(4) Slide the FFC support to the rear and lightly pull up the cable clamp to release the support from
the cable clamp.
(5) Remove the head flat cables from the FFC support.
NOTE: For easier removal, first release the left end of the FFC support film from the boss on
the FFC support and turn the head flat cables clockwise.
emoving the head flat cables
from the FFC support
Carriage PCB
C support
C support film
Boss
C support
Carriage-head flat cable
Carriage PCB
Head/carriage unit
(6) Unlock the connector on the carriage PCB and disconnect the carriage-head flat cable.
Head flat cable 1
(17-pin)
Head flat cable 2
(19-pin)
Opening
Cable clamp on the head joint
5-34
lat core
Head flat cable 1 (17-pin)
Head flat cable 2 (19-pin)
Main PCB
Confidential