What do the different status light colors mean on the HP Smart Tank 7600?

The status light bar uses different colors to indicate printer states: amber means an error has occurred, blue shows Wi-Fi connection status, light blue means the printer is idle or in sleep mode while connected to Wi-Fi, green means the printer is busy or updating, purple means the printer is in Wi-Fi setup mode, and white means the printer is idle, sleeping, or processing a job. For example, a solid amber light means an error is blocking a job, while fast-blinking amber indicates a serious error requiring you to turn the printer off and back on. Check the printer display or HP Smart app for specific troubleshooting information when amber appears. (Page 6)