HP Deskjet F4240 All-in-One Printer - Manual (Page 209)

Solution 3: Replace the print cartridges
Solution: Replace the print cartridges that are experiencing the problem. If only one
of the print cartridges is experiencing the problem, you can also remove it and print
using ink-backup mode.
NOTE: During ink-backup mode, the product can only print jobs from the
computer. You cannot initiate a print job from the control panel (such as copying
or scanning an original). For more information, see
Use ink-backup mode .
Cause: One or both of the print cartridges were having a problem.
Chapter 12
206 Troubleshooting
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