Samsung SCX -4300 Solution

you can try this way for your problem
1. go to tech mode by menu copy left arrow right arrow menu right arrow
2. activate download by menu data setup flash upgrade local ok
3. drag and drop the fix_scx4300_v1.13_fact_romdl.hd on scx-4300\usbprns2.exe
4. printer displey data receiving flash erasing flash programning download ok
5. fix tisco tape on chip or remove chip (this stape is missing by all )
6. reset all counter by tech mode clear counter clear all counter
7. restart the printer
8. now it is working properly red light is change into green