How to Reset Factory Brother 7420 like page counter/copy/fax Thanks

SOURCE: Brother HL 1250 Laser. Drum & page counter

Reset the drum counter as follows:

1. Open the front cover.
   
   
2. Locate the control panel button under the LED lights on the left side.
   
   
3. Press the control panel button until all lights are lit, then release it.
   The Drum counter is now reset.
   
4. close front cover

John Tuminaro

• 56 Answers
• Posted on Jan 15, 2009

SOURCE: BROTHER MFC 7420 PRINTER SOLID VERTICAL LINE...

Open te lid and look at the glass. You have dirt or white-out or something on the thin strip of glass to the left. Clean that glass!

Good luck!

SOURCE: Black lines in copies and fax's Brother MFC 7420

If the black lines comes when using the ADF (top feeder), try to see if you get the same problem when using the scanner glass or receiving faxes. If you don't, you simply have to clean the glass strip to the left of the a4 sized scanner glass. Wipe it with a dry cloth piece, no paper and no water/alcohol. If you see some dirt there that you're unable to simply wipe off, try to use a cotton wool to "rub" it off.

Richard Eisenman

• 10 Answers
• Posted on Nov 21, 2009

SOURCE: Brother MFC 8220 all-in-one fax prints with a vertical line

First guess is you have a bit of dirt (often white-out from people scanning corrected paper that's not quite dry) stuck on the fax scan window. This should be described pretty well in your user manual (which you can download online from brother.com).

Its also possible that there is dirt (typically loose toner) on the laser scan window (there's a laser that shines through it to get the image pattern on the drum). That window is often along the bottom of the unit under the drum/cartridge (take the cartridge out and look). The Brother manual I've seen seems to ignore this possibility.

Print streaks DO NOT mean cartridge drum replacement in many cases !! On brother Intellifax or MFC or other laser copier/printer/fax, keep in mind that either the fax/copy scan window OR the laser scan window can get dirty. If the fax scan window is dirty, you see streaks on outgoing faxes and copies (but NOT incoming faxes). If the laser scan window is dirty, you see streaks on all prints (copies, faxes, print-from-computer).

Note also that when transporting/moving some laser copier with the toner cartridge inside, the toner can get out and make a big mess inside (including getting the laser scan window dirty). An air compressor can be usefull to blow it out. And sometimes using alcohol to clean is a BAD idea (maybe incompatible with plastic and rubber parts). A damp rag is probably fine.