imageCLASS MF753Cdw - Sleep mode stinks

[Donda577]

My wf753cdw goes into sleep mode quickly and I can’t print from my iPhone wireless. This is insane! Im 2 days past being able to return it or I’d do it! Too much $. Luckily I still have my Hp on my Wi-Fi. 

[shadowsports]

The printers sleep function and options are configurable:

[Timer/Energy Settings] - Canon - imageCLASS MF753Cdw / MF751Cdw - User's Guide (Product Manual)