HP Photosmart C4580 All-in-One Printer - Manual (Page 200)

Solution 2: Check the power cord and USB cable
Solution: Make sure that the power cord and USB cable are properly attached and
plugged in. Also, make sure that the product is turned on.
To check the power supply
1. Make sure the power cord is firmly connected to both the product and the power
adaptor. Plug the power cord into a power outlet, surge protector, or power strip.
1 Power connection
2 Power cord and adaptor
3 Power outlet
2. Make sure the product is turned on.
3. If the product is not receiving electrical power, connect it to another power outlet.
4. Turn off the product and reset it by disconnecting the power cord.
5. Wait 5 seconds, and plug in the power cord.
6. Turn on the product.
7. Try to scan again.
To check the USB connection
1. Verify that the USB cable is securely plugged into the USB port on the back of
the product.
2. Make sure the other end of the USB cable is plugged into a USB port on your
computer.
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