How to reset drum unit in Samsung 2876nd printer

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The drum resets only automatically when it is replaced, it has a reset chip on it. Have you replaced the drum?

Dear Ankit
you can replace the complete drum cart. or replace the CRUM (drum chip) of the drum cart. no need to replace the drum it can goes up to another 9000 a4 pgs.
Thanks.

You need to buy a new drum - cost about the same as new printer.

Some people (on ebay) sell a chip (a fuse actually) to reset the drum - Buy one provided your drum is still giving perfect prints

first u need to get the reset chip then follow this link
How to reset CLT R406 CLTR406 Samsung CLP 360 CLP 365 CLX 3300 Drum OPC...

If you are worried about opening the printer or welding, you can simply buy an easy reset chip from Amazon or eBay. No welding is required and the installation takes only 1 or 2 min. Just peel and stick the chip.

Search for DRUM RESET CHIP or PEEL STICK DRUM RESET and you will find many premade reset chips.

The drum fills up with waste toner and you can empty it but its messy and you need to clean everything carefully after taking it apart. Take out the imaging unit, unloosen the screws on both sides, unmount the retainer springs and push the center pin out of the drum. Take out the drum and unscrew the two screws that were hidden behind the drum. Now take away all parts so that you can empty the waste drum container. Clean everything especially the light emitting panel, drum and white plastic cover needs to be clean. Hope this helps.

It is not possible to reset. If you want you may reach tech mode and do some count clearings.
Try your luck to reset.

Reset DCP 7030 drum unit : -LCD-
Press MENU and turn on printer - MAINTENANCE
arrows 81 and OK -RESET DRUM COUNT
press OK -RESET LIFE COUNT
press CLEAR / BACK
arrows 99 and OK
ready