There are several factors that cause the printer indicator light blinks and were constantly lit:
Among the causes can be caused by the following factors:

1. Installation of the printer Cartridge installed incorrectly
2. Position the cartridge mounting swapped.
3. Cartridge mounted on the printer is not compatible with the printer.
4. Forget We Put the current paper printing.
5. Once the paper has not pressed the button laden paper sign / resume.
6. There is a paper that folded (stuck) on the wheel
7. Check whether the printer penutu have a perfect ending.
8. If permasalahn above are not appropriate then try to turn the printer off and on again,