Do you have service manual for Canon IP2700?

Hi!

Recently, I just found out the my printer Canon IP2770 won't turn on. I checked the power cable line's continuity end-to-end, it's good. It seems that the possible problem would be the power supply board inside the printer.

Below is the setup of my printer:

Printer <-> Router (with USB port) <-> PC1/2/3

I just need to make sure if my presumption is true by opening the box.

Do you have a service manual on how to open the box of Canon IP2770?

I would be glad to know if you have one.

Thank you very much!