HP Deskjet 990cxi Printer - Manual (Page 63)

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Problems?: Troubleshooting Tips
The Resume Light is flashing.
(continued) There may be a paper jam and the
Automatic Two-Sided Printing
Module is attached. 1 Turn your printer off.
2 Press the button on top of the Automatic Two-Sided Printing Module
and lower the access door.
3 Pull the jammed paper out of the Module, then close the access door.
4 Turn your printer back on.
5 Print your document again.
You may be printing a two-sided
document manually and the first
side has finished printing. 1 Follow the on-screen directions for how to insert the paper.
2 Press the Resume Button .
The Print Cartridge Status Light
is flashing.
The top cover may be open. Close the top cover.
There may be a problem with one
of the print cartridges. See “Print Cartridge Status” on page 42.
What do the flashing lights mean? Continued
What is the problem? Possible cause To solve the problem…