1. Remove the exposure glass. (Exposure Glass)
  2. Remove the FFC from the scanner carriage. (Scanner Carriage)
  3. Remove the APS sensor harness cover [A].
  4. Remove the double-sided tape.

    When reattaching the same part, apply a double-sided tape again.
  5. Remove the rear cover. (Rear Cover)
  6. Remove the controller box cover. (Controller Box Cover)
  7. While pressing the lock release lever, pull out the FFC [A].