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Factory\HARD reset HP DesignJet T2300

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HI! I have HP DesignJet T2300 with lost password. How to factory\hard reset this device or enter in service menu (i hope hard reset is in menu)?

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if you click on the wrench icon and scroll down to service mode, enter 3174 and scroll down to reset access control.   I am hoping this resets the password as I have never had to attempt it before.

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