HP Deskjet 6940 - Manual (Page 107)

PictBridge lights are flashing
State of the lights Task
Connection light and the Error light are
flashing
The printer has lost connection with the
camera while printing.
Check the USB connection.
Connection light is on and the Error light is
flashing
The camera has lost power.
Replace the camera batteries or connect
it to a power supply.
Connection light is on and the Error light
flashes twice
The camera has requested an
unsupported command.
Bluetooth printing problems
Bluetooth device cannot find the printer
Try one of the following solutions:
User's guide 105