A: This fault indicates that the coin mech is not accepting cashbox coins, that is coins that are destined to be routed to the cashbox. (This is easily tested by checking if a 5c coin is accepted). The most common cause of this fault is a blocked cashbox sensor therefore the coin mech believes that the cashbox is full and will not accept any further cashbox coins.

The cashbox sensor can be checked by removing the cashbox shute cover on the rear of the coin mech. See this page for a picture of this cover removed (will open in a new window): http://www.coincoaustralia.com.au/node/59, bottom picture. Check there are no coins in there and that the sensor lens and mirror are clean. Coins can become jammed in there if the cashbox fills all the way up into the coin mech, or if the coins get caught as they are coming out of the coin mech. Check that there is nothing to catch the coin as it falls from the coin mech to the cashbox.