Power Save Mode for Energy Star Compliance affects Wireless Communications Response

Article ID: 74554361



Topic or Information

Wireless communications appears slower to respond after updating firmware or using firmware later than those described below

Applies To

GK420™, GT800™, GX420™, GX430™ 

GT800 Series – V70.17.16Z or later

GK420 Series – V61.17.17Z or later

GX420 Series - V56.17.17Z or later


The above printer firmware versions were enhanced to support a power saving mode that affects the Wireless Radio by powering off during periods of inactivity. The act of coming back online takes time that may affect the response. 

Taking the printer out of power save mode will keep the Wireless Radio Powered on. The default is "best" 


A SetGetDo command is used to turn the power save off. 

To view the present setting use the getvar command

! U1 getvar "wlan.power_save" 

To turn the power save off use the setvar command

! U1 setvar "wlan.power_save" "off"

This setting is saved and will remain unless set back to "best" or if the printer is defaulted.