HP Deskjet 6620 Color Inkjet Printer - Manual (Page 39)

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.
6.4 Using the Auto Two-Sided Print Accessory with
Small Paper Tray when printing from a digital camera
In order to use the Auto Two-Sided Print Accessory with Small Paper Tray when
printing directly from a digital camera, you might need to configure the printer to feed
paper from the accessory rather than the In tray.
HP Deskjet 6600 series printer User's Guide
39