Brother HL-S7000DN Service Manual page 392

1.4.2 Printing of test pattern (Function code 09)
<Function>
This function allows you to print a test pattern and check print quality.
<Operating procedure>
(1) Press the 0 and 9 buttons in this order in the initial state of the maintenance mode.
"PRINTING" appears on the LCD, and a test pattern is printed.
If there is no paper in the paper tray, the print job is canceled.
(2) When the machine finishes printing the test pattern, it returns to the initial state of the
maintenance mode.
Fig. 5-1
5-4
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