File Number:FAQ23M-1V125
CM2100 series panel energy saving mode function settings (only for this model)
When the printer is in power saving mode, the screen is not lit, but the document can be printed normally. This is normal because the panel energy saving is turned on by default for this model of machine. If it is not needed, you can turn it off. Please check the following steps:
Settings-ECO&EP-Panel energy saving-off