Brother MFC640CW Service Manual page 127

6) Fit the FFC support to the head joint, sliding it along the joint's cable clamp.
7) Route the head flat cable 1 as shown on
double-sided adhesive tape attached in 1) above.
8) Mount the head cover.
C support
Carriage PCB
Cable clamp on the
head joint
ouble-sided adhesive tape for
securing the head flat cable 1
page 5-35 and secure it to the lower cover with the
Opening
5 - 4 1
lat core
Head flat cable 1 (17-pin)
Head flat cable 2 (19-pin)
Main PCB
Double-sided
adhesive tape
Lower cover
Confidential