Error Code Indication (Function Code 82); Developing Bias Voltage Correction (Function Code 83); Exit From The Maintenance Mode (Function Code 99) - Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual

1.4.19 Error Code Indication (Function code 82)

<Function>
This function displays an error code of the machine on the LCD.
<Operating Procedure>
(1) Press the
the maintenance mode. Then, press the OK button. The machine displays "MACHINE
ERROR X X" on the LCD.
(Refer to "2. Error Code" in Chapter
(2) Press the Cancel button to return the machine to the initial stage of the maintenance
mode.

1.4.20 Developing Bias Voltage Correction (Function code 83)

<Function>
The developing bias voltage correction is performed.
<Operating Procedure>
(1) Press the
the maintenance mode. Then, press the OK button.
The machine displays "CALIBRATE/ PLEASE WAIT" on the LCD and starts the
developing bias voltage correction.
(2) Upon completion of the developing bias voltage correction, the machine returns to the
initial stage of the maintenance mode.
Note:
- Ignore all of the panel operation during the developing bias voltage correction.
- If an error occurs during the developing bias voltage correction, the following error message
appears. Press the Go button to clear the error, and then the machine returns to the initial
stage of the maintenance mode.
- If an error - except for the developing bias voltage correction - such as "Cover is Open"
occurs, follow the messages on the LCD to clear the error. If you clear the error, the machine
returns to the initial stage of the maintenance mode. Again, start from the beginning to
perform the developing bias voltage correction.

1.4.21 Exit from the Maintenance Mode (Function code 99)

<Function>
Exit from the Maintenance Mode.
If the error related to the fuser unit occurs, clear the error.
(Refer to "2.4 How to Recover from Errors of the Fuser Unit"
<Operating Procedure>
(1) Press the
the maintenance mode. Then, press the OK button.
(2) The machine exits from the maintenance mode and return to the ready state.
or button to display "MAINTENANCE 82" on the LCD in the initial stage of
or button to display "MAINTENANCE 83" on the LCD in the initial stage of
Fig. 5-13
or button to display "MAINTENANCE 99" on the LCD in the initial stage of
1.)
on this chapter.)
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