Why does my Brother Printer produce a vertical black line in copies?
Black vertical lines on copies are typically caused by dirt or correction fluid on the glass strip, or the corona wire for printing is dirty.
What to do if Brother MFC-7840N All in One Printer says 'Document is too long'?
If your Brother All in One Printer displays 'Document is too long', check if the document is jammed in the ADF (Automatic Document Feeder). If it is jammed, remove it.
What to do if my Brother MFC-7840N All in One Printer has no printout?
If your Brother All in One Printer isn't printing, there are several things you can check: * Ensure the printer is plugged in and the power switch is turned on. * Verify that the toner cartridge and drum unit are installed correctly. * Check the interface cable connection. * Make sure the correct printer driver has been installed and chosen. * Check to see if the LCD is showing an error message. * Check the machine is online.
Why Brother All in One Printer does not load paper and shows 'No Paper' or 'Paper Jam'?
If your Brother All in One Printer displays 'No Paper' or a 'Paper Jam' message, here's what you can do: * If there is no paper, load a new stack of paper into the paper tray. * If there is paper in the paper tray, make sure it is straight. * If the paper is curled, you should straighten it; sometimes it is helpful to remove the paper, turn the stack over, and put it back into the paper tray. * Reduce the amount of paper in the paper tray, and then try again.
How to remove vertical black line in copies from Brother MFC-7840N All in One Printer?
Black vertical lines on copies are typically caused by dirt or correction fluid on the glass strip. Clean the scanner glass. The corona wire for printing may also be dirty, so clean the corona wire as well.
How to fix 'No detection of internal temperature thermistor' on Brother MFC-7840N All in One Printer?
If your Brother All in One Printer displays 'No detection of internal temperature thermistor', check the harness connection of the internal temperature thermistor and reconnect it.
What to do if Brother MFC-7840N All in One Printer says 'No paper'?
If your Brother All in One Printer displays 'No paper', reload paper into the tray and then press the start button to resume printing.
What to do if my Brother MFC-7840N does not answer when called?
If your Brother All in One Printer isn't answering when called, make sure the machine is in the correct receive mode for your setup, check for a dial tone, and if possible, call your machine to hear it answer. Also, check the telephone line cord connection.
How to fix 'Toner Low' on Brother MFC-7840N?
If your Brother All in One Printer displays 'Toner Low', prepare a new toner cartridge. If the toner is empty, replace it.
What to do if there is a paper jam inside Brother MFC-7840N?
If you encounter a paper jam inside your Brother All in One Printer, open the front cover, completely pull out the drum unit, and then remove the jammed paper.
General| Brand | Brother |
|---|---|
| Model | MFC-7840N |
| Category | All in One Printer |
| Language | English |
Explains how to use the documentation and understand the machine's interface.
Details how to load various types of paper and documents into the machine.
Guides users through initial configurations like timers, paper settings, and volume.
Describes security options like TX Lock, Memory Security, and Secure Function Lock.
Provides instructions on how to send faxes using the ADF or scanner glass.
Details how to configure receive modes and manage incoming faxes.
Covers connecting and using telephones and external devices with the machine.
Explains how to dial numbers, store contacts, and manage speed dial settings.
Details features for managing faxes remotely, like forwarding and storage.
Explains how to use polling to send and receive faxes remotely.
Guides users on printing various operational and status reports.
Provides step-by-step instructions for copying documents.
Explains how to read guides and use software for printing and scanning.
Outlines safety precautions, legal notices, and important compliance information.
Provides guidance on resolving common issues and performing regular maintenance.
Describes how to access and use the machine's menu options and features.
Lists the technical specifications of the machine, including hardware and software.
Defines key terms and features used throughout the manual.
An alphabetical listing of topics and their corresponding page numbers for quick reference.
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