User's Guide - (Macintosh OS X)

Power light is flashing
1 Power light
● If the Power light is on, the printer is either printing or ready to print.
● If the Power light is off, the printer is off.
● If the Power light is flashing, see the following information.
What the flashing light means
The Power light can flash for several reasons:
● The printer cover is open.
● The printer is out of paper.
● A problem exists with the printer, such as a paper jam or a problem with a print
cartridge.
If an error message appears
Read the error message that explains the problem and its solution.
Document prints slowly
Multiple software programs are open
The computer resources are insufficient for the printer to print at its optimum speed.
To increase printer speed, close all unnecessary software programs when printing.
Best or maximum dpi print mode is selected
The printer prints more slowly when Best or Maximum dpi is selected as the print
quality. To increase the printer speed, select a different print quality mode.
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.
Chapter 10
52 HP Deskjet 3900 series