Brother Facsimile Equipment MFC7420 - Manual (Page 167)

8 - 1 0 Confidential
8.4.5 Test Pattern 1 (Function code 09)
„ Function
This function, much like the copying function, prints out test pattern 1 to allow the service
personnel to check for record data missing or print quality.
„ Operating Procedure
MFC7420/7820N
Press the 0 and 9 keys in this order in the initial stage of the maintenance mode.
DCP7010/7020/7025
Press the key or key several times to display the “MAINTENANCE 09” code on the
LCD. Then press the Set key .
The figure below shows test pattern.
Test Pattern