How to remove vertical black line in copies from Brother MFC-7840W?
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.
Why Brother MFC-7840W 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.
What to do if my Brother MFC-7840W 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.
General| Print technology | Laser |
|---|---|
| Maximum resolution | 600 x 2400 DPI |
| Time to first page (black, normal) | 10 s |
| Print speed (black, normal quality, A4/US Letter) | 22 ppm |
| Grayscale levels | 256 |
| Input color depth | 24 bit |
| USB port | Yes |
| Standard interfaces | USB 2.0 |
| USB 2.0 ports quantity | 1 |
| Dimensions (WxDxH) | 428 x 396 x 304 mm |
| Networking features | 10/100 Base-TX Ethernet |
| Wireless technology | IEEE802.11b/g |
| All-in-one functions | Copy, Fax, Scan |
| Color all-in-one functions | scan, n |
| Compatible operating systems | Windows Vista/XP-Home/2003/2000 Mac OS X 10.2.4 & later Linux printer driver |
| Copier resize | 25 - 400 % |
| Maximum copy resolution | 600 x 600 DPI |
| Maximum number of copies | 99 copies |
| N-in-1 copy function (N=) | 2, 4, 9, 16, 25 |
| Copy speed (black, normal quality, A4) | 22 cpm |
| Faxing | Mono faxing |
| Fax memory | 500 pages |
| Fax coding methods | MH, MMR (Fax coding method), MR |
| Fax speed dialing (max numbers) | 200 |
| Maximum input capacity | 250 sheets |
| Multi-Purpose tray input capacity | 1 sheets |
| Auto document feeder (ADF) input capacity | 35 sheets |
| Internal memory | 32 MB |
| Sound power level (standby) | 32 dB |
| Sound pressure level (printing) | 53 dB |
| Media weight (tray 1) | 60 - 105 g/m² |
| ISO A-series sizes (A0...A9) | A4, A5, A6 |
| ISO B-series sizes (B0...B9) | B5, B6 |
| Maximum ISO A-series paper size | A4 |
| Multi-Purpose Tray media weight | 60 - 163 g/m² |
| Supported network protocols (IPv4) | IPv4, IPv6 |
| Sustainability certificates | ENERGY STAR |
| Power consumption (standby) | 75 W |
| Power consumption (PowerSave) | 12 W |
| Power consumption (average operating) | 320 W |
| Package weight | 13.400 g |
| Market positioning | Home & office |
To Next Page
