I just unboxed a brand new HP OfficeJet Pro 6970 All-in-One series printer. Been storing in my closet for 5 years. My HP 6600 printer quit after yers of printing. After unboxing and setup, I keep having a “carriage jam” code on the printer screen. Powered off, disconnected power cord from printer. Reattached power cord, turned unit back on, message is still there! CARRIAGE JAM…. THE PRINT CARRIAGE CANNOT MOVE. OPEN THE CARTRIDGE ACCESS DOOR, CLEAR ANY PAPER JAM OR OBSTRUCTION & SELECT OK. The only paper that has been printed on the unit was the alignment sheet on setup. How to I correct this???????