HP Deskjet F4240 All-in-One Printer - Manual (Page 186)

HP All-in-One not found
Solution: If the product is not properly connected to the computer, communication
errors can occur. Make sure the USB cable is securely connected to the product and
the computer, as shown below.
For more information, see:
After setting up the product, it does not print
Cause: This error applies only to USB-connected devices. The USB cable was not
plugged in properly.
Communication test failed
Try the following solutions to resolve the issue. Solutions are listed in order, with the most
likely solution first. If the first solution does not solve the problem, continue trying the
remaining solutions until the issue is resolved.
• Solution 1: Make sure the product is turned on
• Solution 2: Make sure the product is connected to the computer
Solution 1: Make sure the product is turned on
Solution: Look at the On button located on the product. If it is not lit, the product is
turned off. Make sure the power cord is firmly connected to the product and plugged
into a power outlet. Press the On button to turn on the product.
Cause: The product was turned off.
If this did not solve the issue, try the next solution.
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