Question about Brother HL4040CN Laser Printer

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Our Brother HL 4040 CN printer has this message "Drum Error, slide green tab on durm unit in each color." We cannot find our Users Handbook - and this in one printer networked to 4 other computers. Can you provide documentation to help us solve this problem?

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Since changing the drum for brother hl 40-40CN , the printer won't work.

Posted on Oct 19, 2010


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Drum error. slide green tab in each color - Brother HL4040CN Laser Printer

Try removing all the toner carts and remove the drum unit from the printer. Using the upholstery tool on your home vacuum cleaner, clean all over the drum unit being careful not to directly touch the drum surfaces (they scratch very easily causing permanent marks to print) also vacuum out the inside of the printer. It is likely that dust is preventing correct charge build on the drum. Also make sure the green slide tabs are placed back at the home position at the side of the drum unit. Re-assemble and test.

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The green tab slides from left to right.
This cleans the croner wire. These wire also have a tedancy to break every often.
The drum unit will need to be replaced

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Brother printer 4070CDW drum error slide green tabs on each color

Open up the printer and slide the green tabs to clean the drum chargers

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My brother MFC9840cdw has an error message that says, "drum error, slide the green tab on each of the colored drum units. Refer to the users guide". I have tried sliding the green sliders several times. I...

The guy that replied solved the problem. He rocks and I can't believe that brother does have a large posting on this issue. Sham on them:
ben2913 did the job "This is NOT the solution to this error code. The code is telling you that the Corona wire must be cleaned. Remove all 4 color drums. Look down into the tray that you removed them from and you will see 4 green tabs. Open the plastic cover that protects the corona wire and move the green tab back and forth several times. After you have done this with all 4, reinstall the drums, close the machine front and everything will work fine again."

Feb 25, 2010 | Brother MFC-9840CDW Laser Printer

1 Answer

Drum Error: It says to Slide the Green tab on each color drum to correct problem. I do it on all and nothing happens error continues.

this printer has 6 Drum, check all, and look internal counters is available on the menu they are down counters. If Continues go the Brother Repair Center, for repair.

Nov 01, 2009 | Brother HL-4040CN Laser Printer

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The slides you are moving are for the drum units, you could try using canned air to blow in the same area that the sliders slide across, if that doesn't help you may need a new drum unit..

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The green tabs that you have to slide are under the color cartridges, so remove the three color cartridges and you will see three green tabs, to slide the tab across the wire you have to first open the translucent plastic wire cover, then slide the green tab across the wires and return it to it's original position, close the wire covers, replace the color cartridges, and reassemble the printer. All the Best

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Drum error : slide the green tab on drum unit in each colour?

you forgot to slide the tab, unless you do this you cannot use your printer im afraid, drum unit is a cylindrical part unit, unless otherewise you correct this instlltion procedure there is no othere way around it

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