HP Photosmart C4344 All-in-One Printer - Manual (Page 270)

Cause: The last time the product was used, it was not turned off properly. If the
product is turned off by turning off the switch on a power strip or by using a wall switch,
the product might be damaged.
Two-way communication lost
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: Turn on the product
• Solution 2: Connect the product to the computer
Solution 1: Turn on the product
Solution: Look at the display on the product. If the display is blank and the On light
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.
Solution 2: Connect the product to the computer
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.
Cause: The product was not connected to the computer.
Errors 267
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