Develop Roller Counter Reset Function - Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual

2.2

Develop Roller Counter Reset Function

Since print density is likely to become darker as the toner gets older, the developing bias is
lowered by degrees (bias voltage is reduced) according to the number of develop roller
rotations so that an almost fixed density can be maintained from the beginning to the end. You
can check the developing bias voltage by printing the maintenance information
77 in the maintenance mode).
In the case that the toner cartridge is replaced with a new one, the develop roller counter and
developing bias voltage are reset at the same time. This function allows you to reset these
manually.
Front Cover is Open
Pressing Reprint & Cancel at the same time
<Operating Procedure>
Note:
If there is no operation for 30 seconds or more, the machine automatically returns to step (1).
Panel Operation
(1) Press the Reprint and Cancel buttons at the same time
when the front cover is open.
(2) "Reset Parts Life" appears on the LCD. Press the
buttons to select the appropriate toner cartrige, and then
press the OK button.
B.TNR-S
B.TNR-H
C.TNR-S
C.TNR-H
M.TNR-S
M.TNR-H
Y.TNR-S
Y.TNR-H
(3) Once "OK?" appears on the LCD; press OK button.
(4) The develop counter is reset.
(5) The machine displays "Cover is Open/ Close the Front
Cover." Close the front cover.
Menus of the develop roller counter reset
LCD
Reset the develop roller counter of standard black
toner cartridge.
Reset the develop roller counter of high-capacity
black toner cartridge.
Reset the develop roller counter of standard cyan
toner cartridge.
Reset the develop roller counter of high-capacity
cyan toner cartridge.
Reset the develop roller counter of standard
magenta toner cartridge.
Reset the develop roller counter of high-capacity
magenta toner cartridge.
Reset the develop roller counter of standard yellow
toner cartridge.
Reset the develop roller counter of high-capacity
yellow toner cartridge.
5-30
(Function code
Function
Description
Confidential
or