The Yellow light blinking refers to a problem with 1 or more cartridges in your printer.
In order to see which cartridge is giving an error:
1-Remove both cartridges
2-Insert only 1 cartridge and power off and on again.(If the light is solid then this cartridge is OK.)
3-If the light is blinking then something is wrong with this cartridge. In this case, Clean the electrical contacts with an eraser and then try again.
4- Insert the other cartridge and follow the process above if the light blinks.
Do not touch the copper-colored contacts or ink nozzles with your fingers. Doing so can result in ink failure, and bad electrical connections.
If the problem is not resolved with the troubleshooting above, you can try replacing with a new cartridge and let us know. For further help, can email at support*