Toner empty,toner low,no cartridge

hello try to do this
press menu#1934 and right arrow key disply show ready tech
press menu button and press left arrow key
display show new cartridge.press enter button twice. then restart your printer.error message didnt display

hello try to do this
press #1934 and right arrow key disply appear ready tech press menu &left arrow key display new cartridge press enter button twice. then toner empty message is over do previous simulation for go normal condition.
paper senser is located at back side of the machine remove backside cover and see heater unit near the hot roller paper senser is located

1- press MENU #1934 and it show you "TECH"
2- Press MENU, Acept. and it show you "Tech Mode"
3- Press < once. and it show you "NEW CARTRIDGE"
4- Press Acept. [YES].
5- Press Acept
6- Press MENU #1934 to exit "TECH MODE"

Note: Don't wait when press #1934. Do this quick.

GO into tech mode by pressing "menu" then #1934
once in tech mode press #10 and scroll through the menu with the arrows until you come to printer cartridge. Select that it is a new one and then your error will go. To exit tech mode do the same - press menu then #1934

Follow these steps (per Samsung Support) to reset cartirdge error:

Press Menu, #, 1934
Screen will read: Ready, Tech Mode
Press Menu until you see Data Setup
Arrow through till you see New Cartridge, enter yes and hit OK or enter

Now re-enter Menu, #, 1934 to get back to Regular Mode

Toner Empty message should be gone!

Good Luck!