HP Deskjet 6840 Color Inkjet Printer - Manual (Page 129)

1. Selection number label
Ink back-up mode
The printer can operate with only one print cartridge installed. For more information,
see the ink back-up mode page.
Installation instructions
Follow these steps so install a print cartridge:
1. Verify that the printer is turned on.
2. Load a stack of letter-size or A4-size plain, white paper in the In tray.
3. Open the printer cover.
4. Wait until the print cartridge cradle is idle and silent, and then lift the print
cartridge latch to the open position.
5. Slide the print cartridge out of the print cartridge cradle.
HP Deskjet 6800 series printer
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