Sharp MX3111U

This adjustment must be performed in the following cases:

• When developer is replaced.

Be sure to execute this adjustment only when developer is replaced. Never execute it in the other cases.
Perform the toner density reference control level adjustment with the toner cartridges removed. If adjustment is performed with toner cartridges installed, the EEEL trouble code or an over-toned condition may occur.

1. With the front cabinet open, enter SIM25-2.
2. Close the front cabinet.
3. Select a developing unit to be adjusted.
4. When [EXECUTE] key is pressed, it is highlighted. The DV roller rotates, and the toner density sensor detects toner density, and the output value is displayed.
   The above operation is executed for 1.5 minutes, and the average value of the toner density sensor detection level is set (saved) as the reference toner density control value.
   When the reference toner density control adjustment operation is completed, [EXECUTE] key returns to normal from highlight. This makes known about whether the adjustment operation is completed or not.
   The above operation is executed each of the lower speed mode and the middle speed mode, and the reference toner density control value is set for each of them.
   If the operation is interrupted within 1.5 minutes, the adjustment result is not reflected.
   When [EXECUTE] key is pressed during the operation, the operation is stopped and [EXECUTE] key returns to the normal display.
   If [EE-EU], [EE-EL], or [EE-EC] is displayed, setting of the reference toner density control value is not completed normally. Troubleshoot the cause, remove the cause, and perform setting again.

   Error display	Error name	Detail of error
   EE-EL	EL abnormality	Sensor output level less than 1.0V, or control voltage over 8.0V.
   EE-EU	EU abnormality	Sensor output level over 2.3V, or control voltage less than 2.0V.
   EE-EC	EC abnormality	Sensor output level: other than 1.65 ± 0.13V

5. Cancel SIM 25-2.
6. Confirm that "Install the toner cartridge" is displayed, and install the toner cartridge by the following procedures.
7. Shake the toner cartridge horizontally several times.
8. Open the front cabinet, and insert each toner cartridge.
   Be sure to install the color cartridges to their proper positions. Avoid installation to a different color position.
   Do not forcibly insert the toner cartridge. Push it in until the cartridge is securely locked in place.
   Developing units removed, be sure to remove the toner cartridges as well to prevent toner clogging.
9. Close the front cabinet.
10. Confirm that "Toner replenishment in progress" is displayed, and wait until the display disappears. (It takes 30 sec - 6 min.)
    This procedure is for checking the toner supply operation from the toner cartridge to the DV unit. The operation time differs depending on the toner quantity in the toner cartridge, uneven distribution of toner, and the internal state of the toner cartridge.
    Do not perform operations which interrupt the above operation, such as opening the front cover, entering the SIM mode, and turning OFF/ON the power. If this precaution is ignored, Trouble codes F2-40 - 43 or F2-64 - 67 or a over-toned condition may occur.
    When replacing developer, always replace all the three colors of Yellow, Magenta, and Cyan. If only one color is replaced, color balance may be adversely affected. Black developer can be replaced individually.
    When developer is replaced, be sure to perform the color balance adjustment.
    When not replacing the developer, do not execute SIM25-2.