1. Disconnect the harness along the right side of the laser unit [A] and remove the screw (x1, x1, x1)

  2. Disconnect the USB cable at [B] and the flat cable harness at [C] (x2).

    • To avoid damage to the connector or board, disconnect the flat cable harness at [C]. Do not disconnect it directly from the board at [B].

    • Note that the harness of the USB cable [A] that you have just disconnected from the PCB is much thicker than the USB cable [B] of the operation panel that you disconnected earlier.
    • The D-connectors of these harnesses are the same. Be sure to re-connect the USB connector with the thick cable to the PCB.
    • If you reverse the connections of these cables, when you turn the machine on, the machine will display "Please Wait" and then freeze (the machine will not boot.)

  3. For the copier model, remove the shield plate [A] (x2).

    • This step is required for the copier model only. The printer model has no shield plate.

  4. Disconnect the brace at the front [A] and rear [B] (x3).
  5. Remove the brace [A] to expose the laser unit [B].
  6. Disconnect the laser unit on the right [A] and the left [B] (x4).
  7. Lift the laser unit and lay it on a flat clean surface.