I am not exactly sure which machine you have by the IGT number you provided but based on the information you provided I am pretty sure it is a PE+
The machine has a DBV200 and the blue screen is classic PE+ (the older PE's didn't have a bill validator) and newer Game Kings would have a WBA.
I would need a picture of your MPU board to be absolutely sure...…
Based on a PE+ you need a SET chip to activate your DBV for use with the PE+
Regardless if the DBV is activated with your game software it should not be clicking the way it is.
It should make a grinding noise at power up, then you hear the belts move forward and back and then the bezel lights up if its activated and ready to take a bill or stays dark if its not activated.
If its not activated you should still be able to put a bill in but it will spit it back out.
The bill mechanism is comprised of 3 parts. Head, Transport, Cash Can.
If the machine has been recently transported the head may have come a bit loose.
The first thing I would do would be to remove the head and then reseat it. This is done by lifting the lever you see at the side of your picture.
Once the head goes through its initialization process we can look at getting you a SET chip to activate your validator