HP C4780, C4750, C4795 Solution 2 Reset the product, Solution 3 Press the On button more slowly

Models: C4795 C4740 C4750 C4780

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Chapter 12

Solution 2: Reset the product

Solution: Turn off the product, and then unplug the power cord. Plug the power cord back in, and then press the On button to turn on the product.

Cause: The product experienced an error.

If this did not solve the issue, try the next solution.

Solution 3: Press the On button more slowly

Solution: The product might not respond if you press the On button too quickly. Press the On button once. It might take a few minutes for the product to turn on. If you press the On button again during this time, you might turn the product off.

CAUTION: If the product still does not turn on, it might have a mechanical failure. Unplug the product from the power outlet.

Contact HP support for service.

Go to: www.hp.com/support. If prompted, choose your country/region, and then click Contact HP for information on calling for technical support.

Cause: You pressed the On button too quickly.

If this did not solve the issue, try the next solution.

Solution 4: Contact HP to replace the power supply

Solution: Contact HP support to request a power supply for the product.

Go to: www.hp.com/support.

If prompted, choose your country/region, and then click Contact HP for information on calling for technical support.

Cause: The power supply was not intended for use with this product. If this did not solve the issue, try the next solution.

Solution 5: Contact HP support for service

Solution: If you have completed all of the steps provided in the previous solutions and are still having a problem, contact HP support for service.

Go to: www.hp.com/support.

If prompted, choose your country/region, and then click Contact HP for technical support.

Cause: You might need assistance to enable the product or software to function properly.

56 Solve a problem

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HP C4780, C4750, C4795, C4740 manual Solution 2 Reset the product, Solution 3 Press the On button more slowly