1. Remove the 1st scanner carriage from the scanner unit.
  2. Position the 2nd scanner carriage with the positioning pins (A1849501).
  3. Insert the wire pulley through the shaft. Do not tighten the screw of the front side.
  4. Turn the wire, and then remove the tape.
  5. Set the spring.
  6. Tighten the screw of the drive pulley.
  7. Remove the positioning pins, and then move the 2nd carriage to fit into the wire.
  8. Set the positioning pins again, and then tighten the screws of the front pulley and tension bracket.
  9. Position the 1st scanner [A] so that the holes are aligned, and insert the positioning pins [1] and [2].
  10. Position the 2nd scanner [B] so that its holes are aligned, and insert the positioning pins [3] and [4].
  11. Attach the lock bracket [C] to fasten the wire to the 1st scanner.
  12. Tighten the screw of the tension bracket.
  13. Attach the pulley and tighten the lock screw.
  14. Remove the four positioning pins.
  15. Remove the tape from the pulley.
  16. Slowly push the scanner left and right to confirm that the wires are engaged correctly. The 1st and 2nd scanners should move smoothly.