• Insert a sheet of paper [A] as shown below when removing the drum motor.
  • This will prevent the grease coated on the tip of the drum shaft from contacting the ITB unit.

  1. Remove the toner supply unit. (Toner Supply Unit)

  2. Remove the faceplate. (Faceplate)

  3. Remove the PCDU. (PCDU)

  4. Open the controller box [A].

  5. Remove the drum motor as a unit [A].

    e.g.: K

    • The following four screws located on the outside of the bracket were positioned on the bracket with a special jig. Do not loosen or remove these screws. If their position is shifted, the drum shaft will become eccentric, and this may cause abnormal images.
    • The procedures for C and M are the same as for K.
    • For Y, it is necessary to remove the drive exhaust fan and potential sensor board before you can do the step above. (Removing the Drive Exhaust Fan and the Potential Sensor Board)

  6. Remove the drum motor [A].

    • When removing or installing the drum shaft [A] and motor [B], the parts where the drum shaft [A] connects to the motor [B] must be kept horizontal so that excessive load is not put on the drum shaft. In order to avoid deformation of the fixing screw [C], use a box-type driver.

    • For Pro C5200S/C5210S, there is a sensor and an actuator on the drum motor for detecting the drum home position. If the actuator is not installed, DEMS goes out of control and uneven density appears at 190 mm intervals on the output. Therefore, check the DEMS execution results with SP3-041-001 (DEMS Exe OK?) after replacing the drum motor. The DEMS execution results are displayed with 8 digits and they indicate the result of each color from left to right (YYMMCCKK). If "11111111" is displayed, DEMS has executed successfully for all color drums and development rollers. If "4" is displayed, there is a possibility that the actuator is not installed.

  7. Remove the rivets [A] (×4), and remove the drum encoder sensor [B] (×2).