note:The Energy Save mode and the Sleep mode are different modes.
HP Customer Support
HP Officejet Pro 8500 Wireless (A909g) and Premier (A909n) All-in-One Printers - Using the Energy Save Mode
You can change how much energy your product consumes by turning on or turning off the Energy Save mode. When the Energy Save mode is turned on, the processor and the firmware inside the product turn off whenever you turn off the product. When the Energy Save mode is turned off, the processor and firmware inside the product continue to run, even when you turn off the product.
If you turn on the Energy Save mode, the product might take a little longer to turn on.
Using the Energy Save Mode
Follow these steps to turn the Energy Save mode on or off.
On the product control panel, press the Setup button ().
Use the Down Arrow button () to scroll down until Preferences displays, and then press the OK button.
Use the Down Arrow button () to scroll down until Energy Save Mode displays, and then press the OK button.
Use the Down Arrow button () to select On or Off, and then press the OK button.
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