Test Pattern (Function Code 09) - Brother MFC640CW Service Manual

8.4.3 Test Pattern (Function code 09)

Function
This function, much like the copying function, prints out a test pattern (PRINT QUALITY CHECK
SHEET) to allow the service personnel to check for print quality.
Operating Procedure
MFC820CW/640CW
Press the 0 and 9 keys in this order in the initial stage of the maintenance mode.
DCP340CW
Enter 0 and 9 by using the
(*To enter a numerical code on models having no numerical keypad, press the
the numerical code to be entered and then press the Set key. Repeat this operation for each numerical code.)
The figure on the next page shows a test pattern which is printed on the PRINT QUALITY CHECK
SHEET. According to the instructions printed on the sheet, you can check or correct the print
quality.
and Set keys.*
8- 8
key several times to display
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