Brother MFC-7340 Squeeks loudly. I have change both toner cart and drum unit twice, but the squeeking persists. Any ideas for a fix?

it most likely has parts that are worn out and need replaced. you will need to have it serviced.

I got this same error message on a newly acquired Brother DCP-7040 that I purchased used off of ebay.

As I was troubleshooting this unit (that I bought untested off of ebay - hey gambling has paid off handsomely for me many times before!), this error message kept popping up.

I checked the COUNTERS (page & Drum life) and found out that the DRUM had 0% life left. BUT, the reason it showed ZERO was because this unit did not have any drum! The toner cartridge (TN-360) needs to sit WITHIN the drum (DR-360) on this DCP-7040 unit, as well as in models DCP-7030, MFC-7340, MFC-7345C, and MFC-7440N.

So perhaps some of these "put the black toner cartridge back in" problems could be related to the DRUM (or lack thereof). A possible tipoff (since the toner cartridge actually does slide into the unit much like other units that do not use Brother's DRUM carrier) seems to be the relative ease with which the toner cartridge slides into the DCP-7040 and really doesn't seem to "lock" into position real firmly.

DCP-7040 USER GUIDES: http://welcome.solutions.brother.com/bsc/public/us/us/en/doc/manual_index.html?reg=us&type2=-1&prod=dcp7040_us_as&c=us&lang=en&flang=all

Here are the steps to change the toner cartridge.

1. Open the front cover (there is a handle just above the manual feed and just below the screen and buttons).
2. Inside there will be a handle facing you; this is the cartridge assembly (toner cartridge + drum unit). Pull the handle straight out. There are no buttons or switches to press, simply pull the handle and the assembly will slide out.
3. On the side of the assembly there will be a small green tab. Press it to release the toner cartridge.
4. Pull the toner up and out to separate the drum unit. (DO NOT touch the imaging roller on the drum! It is a green or blue tube in the front of the drum unit).
5. Put your new cartridge into the drum unit.
6. Slide the cartridge assembly back into the printer until it clicks into place.
7. Close the front cover.*

*If the front cover doesn't close easily, the cartridge assembly is not installed correctly. If this occurs, take the assembly out and reinsert it.

I hope this helps! Good luck!

The drum unit may be at it's end. There is a report you can print that will say "Drum" life at the bottom of the page. I think it's the "User Settings" or something. Though it sounds like you can't print to find this out anyway....Do you recall how many times you've changed the toner without changing the drum? Usually you can expect about 4-5 toners on every drum. Once the drum's photo sensitive coating wears off it is incapable of charging correctly to print. Might just be time for regular maintenance. [email protected] with questions.

yes. that is possible. if the machine was jossled around, the toner contained in the drum unit could leak out between the connecting points of the toner and drum unit. May cleaer it self up, or may not.

You open the front door and pull out the drum and toner assembly and then press the blue lever to release the toner from the drum, place the new toner in the holder and install both together into the machine.

check the drum and clean it ...... clean in side of the printer and check......

check any scratches is there if there menas replace the drum........

If this model comes with the drum separately of the cartridge, only replace the cartridge. There's no need to change it every time. until prints start to get lines or dots. Don't expose the drum to light too much.

helo braxtol! tell me, are you using brother oem toner and drum or are you using a generic brand. you could also have a bad power supply. this is what charges the drum and toner. good luck brother tech

u have to replaced blade.