3.4Test Pattern 1

nFunction

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.

nOperating Procedure

Press the 0 and 9 keys in this order in the initial stage of the maintenance mode.

The figure below shows test pattern 1.

Test Pattern 1

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Brother FAX-921, MFC-970MC, FAX-931 service manual Test Pattern Function