Carriage error or Error Code 5100

Condition: An error occurred in the carriage encoder signal.
Problems and Solutions:

• Smearing or scratches on the carriage slit film
  - clean the timing slit film.
• Foreign material or paper debris that obstructs the carriage movement;
   - remove foreign material.
• Ink tank conditions;
   - re-seat the ink tanks.
• If other solution fail, replace one off the following
  - Timing slit disk film
  - Carriage unit
  - Logic board
  - Carriage motor