Brother P-Touch QL-570 Service Manual page 93

(3) Press the [Check SerNo.] button, and "NG" is displayed as the check result, and the
present serial No. is displayed in the "Results" column.
(4) Press the [Reset EEPROM] button to reset the EEPROM of the main unit to the initial state
(factory default). "Reset command OK" is displayed in the "Results" column.
Fig. 2
Fig. 3
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