Test Pattern (Function Mode 09) - Brother FAX-2820 Service Manual

8.4.4 Test Pattern (Function code 09)
Function
This function, much like the copying function, prints out test pattern to allow the service
personnel to check for record data missing or print quality.
Operating Procedure
Press the 0 and 9 keys in this order in the initial stage of the maintenance mode.
The figure below shows test pattern.
Test Pattern
8 -9 Confidential