Machine Self-Monitoring - Aristocrat USA MAV500/MKVI Service Manual

USA MAV500/MKVI Service Manual

3.2.6 Machine Self-Monitoring

Self-test
When the machine is switched on, it automatically initiates a self-test that continues
in the background as long as the machine is in play mode. During the self-test, the
machine checks the electronic meter data held in computer memory and also carries
out an audit calculation using essential meter counts.
This self-audit calculation is defined by the formula:
CASH IN + HOPPER REFILLS + TOTAL CREDITS WON + JACKPOT HANDPAYS
The memory holds up to three copies of the electronic meter data, METER SET 1,
METER SET 2 and METER SET 3. If the data in one meter set does not match that
in the other two sets, the data of the two identical sets overwrites the single set.
Security
When the machine is in Play Mode, it continuously operates the following security
features:
Coin Acceptor. The coin acceptor scans inserted coins and compares them with a
sample coin held in the acceptor. Invalid coins are diverted to the coin tray.
Accepted coins are directed past the acceptor's internal photo-optic detector and on to
the coin accept chute.
The machine software monitors the speed and direction of travel of the accepted
coins. For coins travelling too slowly or travelling in the wrong direction, an error
signal is generated and the machine locks up, with the appropriate error message
being displayed on the screen.
If the inserted coin is valid and no error conditions are encountered, the appropriate
credits are registered in the game CREDIT display and gameplay may take place.
The Jurisdictional Meters CASH IN and CREDIT and the electromechanical meter
CASH IN (if fitted) are incremented accordingly.
Hopper. If the hopper is empty and the player is in credit and presses the
CASHOUT/TAKEWIN pushbutton, the machine locks up and displays a HOPPER
EMPTY message and the electronic meter HOPPER EMPTY increments. The
hopper is refilled in these circumstances according to house rules, after which
gameplay may resume.
During a payout, the hopper disc rotates and passes coins onto the coin runner where
they are counted by the hopper photo-optic detector. After passing the detector, they
are deposited in the coin tray for the player to collect. Also:
• the CREDITS COLLECTED electromechanical meter and the TRUE OUT
electronic meter are incremented by the amount paid out.
28-00486-00
This document contains confidential information which is proprietary to ATI. It may not be disclosed to any unauthorized parties,
and it may not be copied. All rights reserved. © Copyright (ATI) Aristocrat Technologies, Inc. 2002.
TOTAL CREDITS BET + CANCEL CREDIT + COIN OUT
=
Machine Modes
3-9