HP Deskjet 6540 Color Inkjet Printer - Manual (Page 145)

Two-sided documents are printing
Printing two-sided documents takes more time than printing single-sided
documents.
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.
Printer is in ink-backup mode
The printer might print more slowly if it is in ink-backup mode .
To increase the print speed, use two print cartridges in the printer.
15.12 If you continue to have problems
If you continue to have problems after investigating the troubleshooting topics, turn
off your computer and then restart it.
If you still have problems after restarting your computer, go to HP customer support
at www.hp.com/support .
HP Deskjet 6500 series printers User's Guide
145