@Jon > 1. Are you using the SD cards to try to play tracks off them or are you just trying to get the player to recognize a blank SD card?
- To save Hot Cues, you can either do it on the fly or preset them. On the fly, you just do the same thing but while the track is playing. To preset, you should browse through a track until you find where you would like to set your Hot Cue "A". You can fine adjust it by switching between CDJ and Vinyl Modes and make sure you get it right on beat/note. When you have it right where you want the Hot Cue, press the "Rec/Call" button below the Hot Cues and they will turn Red. Once they are Red, you can press the "A, B, or C" Hot Cue marker depending on which one you would like it to be under. Once you it it, you can then press the "Rec/Call" button again and your chosen letter "A, B, or C" will now be lit in Green. This means you have that letter saved as a Hot Cue.
You can also do the same with saving Hot Loops. You can create a loop using the "In/Out" buttons on the CDJ, then fine tune the In and Out points by pressing either the "In or Out" marker again and moving the Jog Wheel. This will alter the point so you can create a perfect loop. Once you have a perfect loop made and you want to save it as a Hot Loop, you will need to be in the current loop you want to save, then you can press the "Rec/Call" button and all the letters turn Red again, even if you have a Hot Cue or Hot Loop saved. Then you can select that loop to be under any of the 3 letters "A, B, or C". If you choose a letter that already has a Hot Cue or Hot Loop assigned, it will overwrite the previous Hot Cue or Hot Loop. So you can only have 1 at a time. Either 1 Hot Cue, or a 1 Hot Loop on each letter at any time. To exit, you press the "Rec/Call" button again and the Hot Cues will be lit in Green, and the Hot Loops will be lit in Yellow. Then to exit the loop you press the "Reloop/Exit" button to the right of the "In/Out" buttons. Simply enough, if you want to recall that last loop, just hit the "Reloop/Exit" button and it will go right back into the last loop you were in.
I hope that is helpful. :)
Let me know about the SD cards and if you have more questions.