Toshiba e-Studio 3055CSE

When replacing the developer material, adjust the auto-toner sensor with the following procedure.

1. Take off the drum cleaner unit.
2. Take off the developer unit.
3. Discharge the developer material.
4. Install the drum cleaner unit and developer unit in the EPU tray.
5. Take off the sub-hopper unit and install the developer cartridge.
   Notes: Adjustment cannot be done if the sub-hopper unit is installed.
6. While pressing [0] and [5] simultaneously, turn the power ON. The following message will be displayed.
7. Key in a code and press the [START] button.
   Code
   2400: All developer materials
   2401: Developer material (Y)
   2402: Developer material (M)
   2403: Developer material (C)
   2404: Developer material (K)
   2406: Developer materials (Y, M, C)
8. The message “Has developer in the developer unit run out?” appears on the display. If there is no problem, press the [YES] button on the display.
9. The message “Have the [**] developer cartridges been installed?” appears on the display. If there is no problem, press the [YES] button on the display. Tip: “**” varies as follows depending on the code you have entered.
   Notes:
   Be sure that the developer material in the developer unit is completely empty before you press [YES]. If you press [YES] while developer material still remains, it will overflow and thus may lock the developer unit.
10. The message “Supplying developer.” appears on the display and developer material is filled in the developer unit for approx. 90 sec.
    Remarks:
    For example, if the filling of the Y and M color developer materials fails, the following screen is displayed. Press the [OK] button, turn the power OFF and check the developer unit.
11. After 2 min. have passed, the following screen is displayed and the auto-toner adjustment starts. During the adjustment, “Current sensor voltage (V)” shown in B automatically changes and gradually approaches the “Target value (V) for the adjustment reference voltage” shown in A.
    
12. When the “Current sensor voltage (V)” in (B) is converged and the “Sensor output control value (bit value)” corresponding to the value for initial developer material is displayed in (C), the adjustment is completed. When the adjustment is completed, the [OK] button is displayed on the screen.
    Notes: The values in (A), (B) and (C) vary with humidity.
13. Press the [OK] button to store the adjustment result in the memory.
    Notes: If you enter any of the codes 2400, 2401, 2402, 2403, 2404 or 2406 after pressing the [CANCEL] button without pressing the [OK] button, or after auto-toner adjustment has failed, the operation in step (11) starts without that in step (8) to (10).
14. Turn the power OFF.
15. Take out the developer cartridge.
16. Install the sub-hopper unit to the equipment.