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Title: What does this error mean? Post by: BR549 Auto Sales on December 18, 2013, 03:44:14 PM I got this on a machine, what is it and how can I resolve it?
Thanks, David Title: Re: What does this error mean? Post by: rickhunter on December 18, 2013, 05:01:06 PM EEprom on motherboard (backlane) is acting up. If a clear chip does not fix it, you need to replace eeprom on the motherboard, it is a small 8 pin serial chip.
Title: Re: What does this error mean? Post by: BR549 Auto Sales on December 18, 2013, 05:10:47 PM Where can I find one of these and what is the location on the backplane board for it?
Thanks, David Title: Re: What does this error mean? Post by: rickhunter on December 18, 2013, 05:18:51 PM It is the only socketed 8 pin dip chip in the motherboard. I don't remember the IC number off the top of my head, but they are not that expensive and you can buy them at mouser.com
Here's a picture of an enhanced one, the older style, is a bit further down, but in the general vicinity as this one. Title: Re: What does this error mean? Post by: BR549 Auto Sales on December 18, 2013, 05:21:09 PM Great, thanks!
Title: Re: What does this error mean? Post by: Foster on December 18, 2013, 06:43:25 PM It is a 24C16, I would try to remove and re insert mpu into motherboard
Also try clearing the error by turning the jp key a few times and closing the door. if you have a spare motherboard swap the chips. Machine settings, accounting, game states are stored on the EEPROM. Title: Re: What does this error mean? Post by: BR549 Auto Sales on December 29, 2013, 11:46:34 PM Well it can't be the backplane board, it has to be the main board instead. I tried it in another working machine and still have the same issue. I get to the point if "EPROM error" I turn the jackpot reset key 3 times and it never clears, just goes back to see attendant and EPROM error any thing else I could check ?
Thanks, David Title: Re: What does this error mean? Post by: CVslots on December 30, 2013, 03:11:45 AM David, check out this thread....and then check your MPU pins...
http://newlifegames.net/nlg/index.php?topic=5092.msg43674#msg43674 (http://newlifegames.net/nlg/index.php?topic=5092.msg43674#msg43674) Title: Re: What does this error mean? Post by: BR549 Auto Sales on December 30, 2013, 04:23:09 AM I checked foe bent pins on the SB chip and the 2 sets of pins that connect to the backplane board and all were fine. I did have a spare main board and I swapped out the two large square INTEL chips and now the game is working fine.
Thanks for the help as always guys, have a happy new year! :244- Title: Re: What does this error mean? Post by: CVslots on December 30, 2013, 04:24:43 AM So, it had to be the INTEL chips?
If the pins on the MPU you swapped out were fine, then we have a solution!! Just curious, as if we can pinpoint this error, it's one more off the list! Title: Re: What does this error mean? Post by: BR549 Auto Sales on December 30, 2013, 04:32:23 AM Yes it definitely had to be one of those 2 chips
Title: Re: What does this error mean? Post by: qbert on December 30, 2013, 11:45:46 AM Just for grins if you haven't scraped the Intel chips I would try reinstalling them.
I have had to remove and install these chips on a few boards to clear errors. Mild oxidation/corrosion will also affect these sockets as well so just removing and reinstalling may have been all you needed. You might end up with few more good spare parts. Glad you got it working. Rich |