Q. How to set the language back to English on P4100 Series Printer?
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Please follow up with below steps (I will put two pictures for the different languages, if you still failed to follow up the choosing numbers, maybe you can try to change it with same words.):
Step1: Click menu and to choose number by ‘page down’ on the below control panel.
Step2: Click”NO.1-system set” by ‘up and down’ button in the menu setting, and then chose “OK”
Step3: Click “NO.5- Restore set” in the menu setting--------“ok”
Step4: Select NO.2-‘Yes’ ------then chose ‘OK” it will be done.