Brother MFC-9140CDN - Led Test Pattern Print (Function Code)

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1.4.23 LED test pattern print (Function code 68)
<Function>
This function allows you to print the LED test pattern and check the LED ASSY for its quality
and float from the exposure drum.
<Operating procedure>
(1) Press the 6 and 8 keys in this order in the initial state of the maintenance mode.
"PRINTING" is displayed on the LCD, and one LED test pattern (refer to next page) is printed.
(2) When this operation is completed without an error, "M68_L" is displayed on the LCD.
(3) Press the Stop key to return the machine to the initial state of the maintenance mode. If
an error message is displayed, remove the cause of the error referring to the measures
described in the table below, and press the Mono Start key.
* # indicates the toner color (Y, M, or C) of which cartridge became empty.
Memo:
You can check the LED for scratches and dirt by performing print test.
(Refer to "1.4.22 Print test" in this chapter.)
Note:
When printing fails, a relevant error is displayed on the LCD. When the error factors
are removed and the Mono Start key is pressed, the machine automatically recovers
to the re-executable state. "PRINTING" is displayed on the LCD, and the LED test
pattern is printed on a sheet.
LCD Description
M68_L Vertical/horizontal dot loss check pattern.
Error message Measure
TONER EMPTY #
*
Replace the empty toner cartridge.
Cover is Open Close the joint cover ASSY .
No Paper Load paper into the paper tray, and close the paper tray.
Jam Tray1 Remove the jammed paper, and close the paper tray.
Jam Rear Remove the jammed paper, and close all the covers.