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Title: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: Worldwide Gaming on July 20, 2011, 01:55:30 PM I've got a number of IGT I+ 044 machines that have decided, en masse, to start throwing the error: EPROM SYNCHRONIZATION ERROR - which then tosses you into a continuous loop of attendant key turns and test button presses... :103-
Clear chipping doesn't work, pulling the battery doesn't work, swapping mainboards doesn't work. :279- Has anyone ever run into this before and what's the fix? Thanks in advance! Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: stayouttadabunker on July 20, 2011, 03:44:20 PM Sounds like the chips are in the wrong sockets? :129-
Have the chips been moved recently? I'd check the chip locations against a known working machine... Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: Slotmaster on July 20, 2011, 03:57:26 PM I think this issue is backplane related and not main board or flash.
The backplane has an EEPROM as well and keeps some data which I think is the error you are getting. I could be wrong here but try another backplane. Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: Bettor Slots on July 20, 2011, 04:17:33 PM I think this issue is backplane related and not main board or flash. The backplane has an EEPROM as well and keeps some data which I think is the error you are getting. I could be wrong here but try another backplane. Good point...and I would check to see that the E4 chip (I think that is what it is called) is installed on the back planes...this is the small 6 or 8 pin chip. Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: Slotmaster on July 20, 2011, 04:41:37 PM I think this issue is backplane related and not main board or flash. The backplane has an EEPROM as well and keeps some data which I think is the error you are getting. I could be wrong here but try another backplane. Good point...and I would check to see that the E4 chip (I think that is what it is called) is installed on the back planes...this is the small 6 or 8 pin chip. Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: stayouttadabunker on July 20, 2011, 04:44:27 PM What is labelled/stenciled/imprinted onto the i-game backplane serial eprom chip?
If they are the same as S+ motherboard 24C04 8-pin chips - I may have some brand new blank spares available... Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: CaptainHappy on July 20, 2011, 05:09:05 PM What is labelled/stenciled/imprinted onto that serial eprom chip? If they are the same as S+ motherboard 24C04 8-pin chips - I may have some brand new blank spares available... Bunker, They are different... I believe that they are 24C256 chips. I will check my spare chips for an exact part number if my mind was wrong! :200- CH :95- Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: stayouttadabunker on July 20, 2011, 05:49:28 PM Ah Oui ! Having larger chips would make more sense as the i-games have more crap to remember! :72-
Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: CaptainHappy on July 20, 2011, 06:28:56 PM What is labelled/stenciled/imprinted onto that serial eprom chip? If they are the same as S+ motherboard 24C04 8-pin chips - I may have some brand new blank spares available... Bunker, They are different... I believe that they are 24C256 chips. I will check my spare chips for an exact part number if my mind was wrong! :200- CH :95- Ah Oui ! Having larger chips would make more sense as the i-games have more crap to remember! :72- OK, for the record here for future readers: Standard i-Games on 3902 use 24C16 8pin DIP 16K Serial E-squared EEPROM, sample part number M24C16 Standard i-Games on 044 use 24C256 8pin DIP 256K Serial E-squared EEPROM, sample part number AT24C256B-PU (Be careful here as the Atmel chip is actually labelled ATMLU018 :279- ) CaptainHappy :95- P.S. I think that the E2 size issue deals more with what chip was available in production at the time of the design than the amount of data, but I am sure that it is more data too. Title: Re: I+ 044: EPROM SYNCHRONIZATION ERROR Post by: stayouttadabunker on July 21, 2011, 12:16:01 AM Excellent information on the i-game backplane chip Capt! :89-
Thanks for looking that up for the i-games guys! :3- Even though it is known that you have the "magic powers" - :93- I gave you a plus + karma! :96- |