bought first slot and need help

Ahh, you have the "dreaded 61 loop" error (which sometimes occurs after a battery change for reasons as yet unknown) As an aside, you might like to read this post.

If you have a different game (SP) chip you can swap them out and perform the 61 clear, then swap them back. If not (which is probably the case since you just bought the machine), then you might try removing the CMOS chip and grounding the leads on a metal surface, then replacing it. This doesn't always clear the 61 loop, but it might.

Finally, you'll need to get a clear chip and perform a full clear if the above measure(s) don't work.

Open the door and With the POWER OFF, remove the coin tray and the hopper. You will see the back of the MPU board tray against the back wall. Pull straight up on the black handle to pop it loose and remove the board.

The three chips in question will be in the lower left front portion of the board (with the connections facing away from you). They should be clearly labeled.

The Game chip, or SP chip is the program that runs the machine. You would to have a different type (e.g., replace an SP1271 with an SP1311, etc) to force the clear which would end the loop.

The Reel chip, or SS chip, contains the data for the specific theme installed (Double Diamond).

There is a also third chip labeled just CMOS which won't have any stickers on it. If you don't have another SP chip on hand, try pulling the CMOS, then ground the pins on a conductive surface, wait a few seconds and replace it. Be CAREFUL not to bend the pins when removing it and make sure that the pins are straight and that none get bent underneath the chip when replacing it.

You probably don't have the correct tool for the job, so use a thin bent screwdriver (or even a straight one if that's all you have). Pry up gently a little at a time on each end and raise the chip out of the socket as evenly as you can. DON'T just pry up one side or you'll bend the pins badly and might even break them.

Once you've either swapped out the SP (game chip) for another or have cleared the CMOS, return the board to its place by pressing firmly down on the top edge to re-seat it in the motherboard (on the floor of the machine), replace the hopper, turn on the machine and try to clear the 61 error as previously instructed.

Also, make sure that the door latch is completely closed before you turn the jackpot reset key. The optics on the latch must be lined up for the machine to see the door as closed.