Brother MFC640CW - Removing the Carriage PCB and Head Flat Cables

5-35 Confidential
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.
Flat core
Carriage PCB
Head/carriage unit
Carriage-head flat cable
Opening
Cable clamp on the head joint
Main PCB
Head flat cable 2 (19-pin)
Head flat cable 1 (17-pin)
Carriage PCB
FFC support film
    
   
FFC support
FFC support
Head flat cable 2
(19-pin)
Head flat cable 1
(17-pin)
Boss
(6) Unlock the connector on the carriage PCB and disconnect the carriage-head flat cable.