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How to solve CRU duse Error in Samsung SCX-4521F Printer?

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Catalin Turcu

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From Samsung site:

1. Press MENU # 1 9 3 4 in sequence rapidly. The LCD panel should now display TECH.
2. Press MENU, and then press ENTER. The LCD panel will display Tech Mode.
3. Press the left arrow (4. Press ENTER. The operator panel will display [YES].
5. Press ENTER. The toner warning message should be gone.
6. To exit TECH MODE, press MENU # 1 9 3 4 in rapid succession, as if you were dialing a phone number. The operator panel should no longer display TECH.

If problem persists, there may actually be a problem with either the toner cartridge or the SCX-4216F.

Works for SCX-4521F
If this will not make the message dissapear it means that the actual fuse is burned out and need to be replaced ...This is how the fuse looks like
http://www.easterntoner.com/product_info.php?cPath=112&products_id=569&osCsid=9d77e00d739b433bf68d25e0335979f9

Posted on Jul 11, 2011

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