CDX-454RF/454XRF133-10. RF BOARD3-11. SLED MOTOR ASSY (251) (M101), OPTICAL PICK-UP (KSS-720A)3two screws(PS2 ×4)3two screws(PS2 ×4)2Remove four soldersof the LSW board leadsand spindle motor leads (M102).2Remove two soldersof the sled motor leads(M101). 1OP flexible board (CN102).4RF board1two precision screws(P2 ×3)4Turn shaft (feed) assyin the directionof the arrow,then remove it.2sled motor assy (251)(M101)OP flexible boardadhesivesheet3optical pick-up(KSS-720A)opticalpick-upNote: After connecting OP flexible board,fix it with adhesive sheetto optical pick-up.