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Title: IGT Double Diamomd Error 21 Post by: orevans123 on March 15, 2011, 01:20:58 PM I have an IGT 25 cent double diamond with errror code 21. I replaced the coin comparitor but that didnt help. I dont know what to check or replace next. I need some advice.
Title: Re: IGT Double Diamomd Error 21 Post by: stayouttadabunker on March 15, 2011, 01:58:19 PM Does this machine have a "monitor" :129-
Really it sounds like you have an S+ with reels? If so, remove the Coin Comparator and check your Coin-in Optic boards under the Coin Comparator. Make sure there's nothing in the pathway and it's clean. A can of compressed air does wonders. You might have to blow out years of lint. Have you had this machine long? |