FAX-1840C
FAQs & Troubleshooting |

FAX-1840C
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Popular
Updated:22/10/2026
These are the most viewed FAQs, ranked by popularity.
- 1.The error message "No Supported Devices Found" appears in Brother iPrint&Scan (mobile device).
- 2.Why does my machine's LCD show "NO CARTRIDGE" even though I have already installed all the ink cartridges?
- 3.Change the printer driver settings (Windows / macOS)
- 4.When I print, the pages are smudged with ink. What should I do?
- 5.Check the firmware version.
Latest
These are the latest FAQs, sorted by last update date.
16/10/2026
When selecting greyscale printing in the printer driver, does this use only the black ink or all the ink cartridges to produce the greyscale image?
16/10/2026
Glossy Paper does not feed correctly. What can I do?
16/10/2026
"How do I clear the message Unable to..." ( "Unable to Change" "Unable to Clean" "Unable to Init" "Unable to Print" "Unable to Scan" )?
14/10/2026
What is Distinctive Ring and how do I program it?
14/10/2026
I'm using Mac OS® 8.6-9.2. How can I uninstall the drivers?