User Guide for HP J5730 / J5740 / J5750 / J5780 / J5785 / J5788
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The last time the HP All-in-One was used, it was not turned off properly...If the HP All-in-One is turned off by turning off the switch on a power strip or by using a wall switch, the device can be damaged......
The HP All-in-One is not connected to the computer......
Communication test failed...
The following is a list of power- and connection-related error messages...
Communication test failed HP All-in-One not found Improper shutdown Two-way communication lost...
Two-way communication lost...
The USB cable is not plugged in properly......
If the HP All-in-One is not properly connected to the computer, communication errors can occur...Make sure the USB cable is securely connected to the HP All-in-One and the computer, as shown below......
Improper shutdown...
Press the Power button located on the control panel of the HP All-in-One to turn the device on and off......
HP All-in-One not found...
The HP All-in-One software could not open or save the file......