Make sure that the FFC of the carriage is correctly connected and routed referring to the following points.
- The FFC [A] must be connected straight, and not at an angle.
 
- Never connect the FFC to the carriage connector at an angle. Otherwise, the BiCU or the SBU may be damaged.
 
- The FFC must not be sagging and must not drag on the bottom of the scanner unit [B].
 - The FFC must be hooked at part [A] of the carriage.