Brother PR655 Service Manual page 316

Special Instructions of Wiring Y-feed cable
3. Wiring of Y feed cable (3)
Y area PCB ASSY
PCB set plate
X-motor lead wire
FFC: SML2CD-YC
4. Wiring of Y feed cable (4)
Screw
Secure with the screw so that the PCB
set plate is parallel to the y-cable
protection sheet.
Unlock the connector lock, and
connect the FFC, and lock again.
PCB set plate
7 - 4
FFC: SML2CD-CX
Y-cable protection sheet
Screw
Y-cable protection sheet
FFC: SML2CD-YC