What is this unit
1.Replace New LSU unit your problem will be resolved.
Or
another solution remove LSU unit check polygon whether rotating freely, if not remove from the board crease it put back the same & rotate your problem will be resolved in some cases
Which model?
SOURCE: Samsung CLP-320 Laser printer On switching
Hi, According to your problem, first check the cartridges. Remove the cartridges and make those clean. clean the drum also. check there is no empty cartridge and the toner of the cartridge is not bad. Check the fuser. You may have to change the cartridge because red light indicates cartridge problem first.
SOURCE: Samsung CLP-320 Laser printer On switching on
Communication error between the toner cartridges and the mainboard of the printer.
Remove all the cartridges, make sure all the protection tapes are removed, that the contact pads are clean and the cartridges themselves are in good shape - no dents or deformations. Put them back correctly - make sure that they are fully inserted - and try again. If it's the same then it's time to take it to a dealer's repair shop.
Since the printer is still in the warranty period the necessary investigations can be performed only by them , free of charge. You definitely shouldn't try to do that yourself, that would void the warranty and all the repairs will be on your money.
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