First check for your card's thickness and adjust thickness lever accordingly.
Take a soft cotton cloth soaked with Isopropyl Alcohol with minimum water content.
Clean all Rollers including one roller below the feeder.
For cleaning Rollers you can take out ribbon and press the push button on front panel.
This will move Rollers and you will be able to clean rollers easily.
Clean the rollers below ultraviolet ribbon sensor and the roller set at output hopper also.