Paper Feeding And Ejecting Test (Function Code 67); Sensitivity Adjustment Of Density Sensor (Function Code 72) - Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual

1.4.13 Paper Feeding and Ejecting Test (Function code 67)

<Function>
This function allows you to check that a sheet of paper is fed and ejected correctly by printing
the grid pattern on a page.
<Operating Procedure>
(1) Press the
the maintenance mode. Then, press the OK button.
(2) Press the
The testing terms are as follows;
SELECT: TRAY1
SELECT: TRAY2
SELECT: MP
SELECT: TRAY1 DX
SELECT: TRAY2 DX
SELECT: MP DX
(3) The "PAPER FEED TEST" appears on the LCD. The selected test printing is started, and
the grid pattern is printed.
(4) To return the machine to the initial stage of the maintenance mode, press the Cancel
button.
Note:
- The test printing is stopped until there is no paper in a tray. Press the Cancel button to stop if
you check the paper feeding and ejecting operations.
- In the case that the error occurs during test printing, the test printing is stopped.

1.4.14 Sensitivity Adjustment of Density Sensor (Function code 72)

<Function>
Although this function can be carried out, the machine does not adjust the sensitivity of the
density sensor. Once the function is performed, the machine prints the patch data onto the belt
unit. It may remain on the belt unit if the power switch is turned off before the performance is
completed. Therefore, it is prohibited to use this function.
or button to display "MAINTENANCE 67" on the LCD in the initial stage of
or buttons to select the testing term and then press the OK button.
LCD
Continuous one-side printing from Tray 1.
Continuous one-side printing from Tray 2.
Continuous one-side printing from MP Tray.
Continuous two-sided printing from Tray 1.
Continuous two-sided printing from Tray 2.
Continuous two-sided printing from MP Tray.
Description
5-18
(Don't use)
Confidential