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How to Enter Diagnostic Mode

Document ID:HO1470

Usergroup :External


How to enter diagnostic mode; Diagnostic mode; C752L



In order to run diagnostic tests on the printer, you need to put the printer into diagnostic mode.
CAUTION! In general, it is strongly recommended that end users refrain from entering diagnostic mode on the printer as they may inadvertently alter sensitive settings.  However, for precise color alignment and the resetting of some maintenance messages, placing the printer in diagnostic mode is unavoidable. 

To enter diagnostic mode on the printer:

    1. Turn the printer off.

    2. Press and hold the Go and Return buttons simultaneously.

    3. While holding down these buttons, turn the printer back on.

    4. When Performing Self Test is displayed, release the buttons.
      CAUTION! Please exercise great care when changing any settings in this mode.

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