(a) A gaming device shall be capable of detecting and displaying the error conditions described in this section and of illuminating the tower light or sounding an audible alarm. Error conditions shall cause a gaming device to lock up and require attendant intervention except as noted within this section. Error conditions shall be cleared either by an attendant or upon initiation of a new play sequence after the error has cleared except for errors described in paragraphs (c)(1) and (3) of this section, which are deemed critical errors that require further evaluation. Error conditions shall be communicated to an online monitoring and control system, where applicable.

1. (1) All external doors (e.g., main, belly, top box);
2. (2) drop box door;
3. (3) stacker door; and

4. (4) any other currency storage areas that have a door.

   (c) Other error conditions.

5. (1) NV memory error (for any critical memory);
6. (2) low NV memory battery for batteries external to the NV memory itself or low power source;
7. (3) program error or authentication mismatch;

8. (4) reel-spin errors. The specific reel number shall be identified in the error code. This should be detected under the following conditions:

   1. (i) a mis-index condition for rotating reels, that affects the outcome of the game;
   2. (ii) in the final positioning of the reel, if the position error exceeds one-half of the width of the smallest symbol excluding blanks on the reel strip; and

   3. (iii) microprocessor-controlled reels shall be monitored to detect malfunctions such as a reel that is jammed, or is not spinning freely, or any attempt to manipulate the final resting positions of such reels.

      (d) Error codes.

      For games that use error codes, a description of gaming-device error codes and their meanings shall be affixed inside the gaming device. This subdivision shall not apply to video-based games.

(b) Door-open error conditions.