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1.4.29 Developing bias voltage correction (Function code 83)
<Function>
This function performs developing bias voltage correction to fix the density of each color toner
when printed color is not correct.
<Operating procedure>
(1) Press the 8 and 3 buttons in this order in the initial state of the maintenance mode.
The machine displays “PLEASE WAIT” on the LCD.
(2) When the developing bias voltage correction is finished, the machine beeps for one
second and returns to the initial state of the maintenance mode.
When any of the following error messages is displayed, take a relevant measure given in
the table below.
* # indicates the toner color (Y, M, or C) of which cartridge became empty.
Note:
Before this function is performed, there is a need that the Sensitivity adjustment of density
sensor (maintenance mode 72) has been done more than once. When performing this
maintenance mode 83 after replacing the main PCB, make sure to perform the Sensitivity
adjustment of density sensor (maintenance mode 72) first.
Error message Measure
FAILED Remove the error factors with the following operations and
press the Start/Black button to clear the error.
- Re-insert the toner cartridge in the correct position.
- Replace the toner cartridge.
- Replace the drum unit.
- Replace the belt unit.
- Replace the registration sensor holder ASSY.
TONER EMPTY # * Replace the empty toner cartridge and press the OK button
to clear the error. Perform the developing bias voltage
correction again.
Cover is Open Close the top cover.
Replace Toner Replace the toner cartridge.
No Paper Replenish paper, and press the Start/Black button to clear
the error.
Jam Tray1 Remove the jammed paper, and press the Start/Black
button to clear the error.
Jam Rear Remove the jammed paper, and press the Start/Black
button to clear the error.
Note:
Any panel operation is invalid during the developing bias voltage correction.
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