HP 3840 - Manual (Page 80)

Computer does not meet system requirements
If your computer does not have enough RAM or does not have a large amount of
free space on the hard drive, then the printer processing time will be longer.
1. Verify that the computer hard disk space, RAM, and processor speed meet the
system requirements.
For the system requirements, see the reference guide that came with the
printer.
2. Make space available on the hard drive by deleting unneeded files.
11.10 Error messages
Follow the appropriate steps for the condition that exists.
Out of paper message
Follow the appropriate steps for the condition that exists.
If the In tray is loaded
1. Verify the following:
• A sufficient amount of paper is loaded in the paper tray (at least ten sheets).
• The In tray is not overly full.
• The paper stack is touching the back of the In tray.
2. Slide the paper guide so that it fits firmly against the edge of the paper.
If the In tray is empty
1. Load paper in the In tray.
2. Push the paper forward until it stops.
3. Slide the paper guide so that it fits firmly against the edge of the paper.
The error message 'There was an error writing to USB port' appears
The printer might not be receiving correct data from another USB device or USB
hub. Connect the printer directly to the USB port on the computer.
The error message 'two-way communication cannot be established' or
'printer not responding' appears
The printer might not be able to communicate with the computer if the USB cable is
too long.
HP Deskjet 3840 series printer User's Guide
80