Author Topic: Troubleshooting S2000 504B CPU (Read 1873 times)

Kooper06 · « **on:** February 12, 2022, 09:57:16 AM »

Quick question to those who have been around the block. I have two S2000s and swapped CPU to troubleshoot an Open Door MB and now the known good board back in the original machine has a closure M, Call Attendant and Machine type Mismatch. Do I need to clear that board with a 224 chip and rekey it with a 45 chip or can I just rekey it?

DB26 · « **Reply #1 on:** February 12, 2022, 03:49:01 PM »

You put the original working MPU back into the working machine? If that’s the case, try just turning the jackpot key until the error clears.

You should rarely ever need to clear a machine. That’s just for changing the acounting denomination.

lookes · « **Reply #2 on:** February 12, 2022, 04:43:08 PM »

Just the reset key and MPU reset button will not fix this. You will find the accounting value and coin value will just be dashes. You can fix the accounting and coin in errors by selecting them in menu 7.1 and pressing the spin button. It will let you change those as well as machine type without clearing. You won't be able to set TITO up unless you key chip. (if you have it) Your bad board is corrupting the EEPROM on the motherboard/backplane of anything you install it in. I see this often. Get your MPU repaired, or just replace it.

sixcardmark · « **Reply #3 on:** February 12, 2022, 05:05:28 PM »

Quote from: lookes on February 12, 2022, 04:43:08 PM

Your bad board is corrupting the EEPROM on the motherboard/backplane of anything you install it in. I see this often. Get your MPU repaired, or just replace it.

Very good info!!

DB26 · « **Reply #4 on:** February 12, 2022, 06:02:10 PM »

Yes good info, lookes. Is it battery damage on his board?

Kooper06 · « **Reply #5 on:** February 12, 2022, 06:27:18 PM »

The board that had the problem with the Door Open MB is out for repair. The one that is in question is the good board that I took out of my other machine. So again the good board went into another machine for troubleshooting and I got the EPROM error as expected and I then hit the reset button. So I would assume that I corrupted/confused that MPU so when it went back into the original machine that is when I got the Closure M, Call Attendant, Machine Type Mismatch. I don’t think I harmed the board I just need the board to recognize the original machine. So back to the Original question do what do I need to do for the good machine to recognize its original board? I don’t think turning the jackpot key will fix anything!!!

qbert · « **Reply #6 on:** February 12, 2022, 09:22:31 PM »

Try lookes post first setting machine type and denom
If that doesn't get you going then,
Key 45 and set up the machine.

DB26 · « **Reply #7 on:** February 12, 2022, 11:29:10 PM »

Odd! You said you see this often? Thanks crazy. I wonder what/how it is corrupting the eeprom.

Trisail · « **Reply #8 on:** February 13, 2022, 07:36:17 AM »

EEPROM could be bad on the motherboard in the original machine. Could be bad in the other machine too. They do go bad once in a while.

MPU could be bad and caused the damage to the EEPROM.

Just my 2 cents.

qbert · « **Reply #9 on:** February 13, 2022, 09:22:01 AM »

If you change MPUs and you don't change out the chips (especially if it has different SGs) you will corrupt the EEprom. Folks that think they want to test a cabinet with a known working MPU set from another working machine will surely corrupt the eeprom.
Simple fix is to key and reset the incorrect settings.

Stayouttadabunker · « **Reply #10 on:** February 13, 2022, 10:16:28 AM »

Just for reference, you're all talking about the 8-pin 24C16 eeprom pdip chip located at U2 right?

I second that I've had these chips go bad too at times....only fix was to swap with a new one.

Only at last resort do I use an IVC224 Clear procedure, to see if I can restore them to any use at all before throwing into the trash.

They are rated for a million write cycles and can hold data for 100 years according to technical sheets, but we've perfected a way to use our slot machines to destroy them in less than 20 years!

https://ww1.microchip.com/downloads/en/DeviceDoc/doc0180.pdf

lookes · « **Reply #11 on:** February 13, 2022, 11:05:47 AM »

That chip is read from and written to by the SENET controller (U721), but it is not a SENET device. Occasionally the controller chip can be bad, (not often) or more likely an I/O controller is messed up (usually U52) and the board starts sending random gibberish out to all devices. I use the same chipset on all boards I work on so that if the EEPROM gets corrupted, I know where to start looking for problems. I've never had to clear. A corrupted EEPROM is just as good as cleared already. Just keychip and make sure the Accounting and Coin values are correct, and then set things up.

Kooper06 · « **Reply #12 on:** February 13, 2022, 01:54:11 PM »

I’ve gone through all of my settings because I placed this board in another machine with the wrong Stepper Base which should have been a SB10023 and I notice that I had to change several settings on the machine to include the denomination, machine type and serial number which was zero’ed out. Now that I’ve changed that I no longer have the Call Attendant and Machine Type Mismatch. I still have the Door Open M and a new one (Please Select WAMM or IPC). I’ll wait for the key 45 to arrive tomorrow and then try and go through all of my settings again. I’m getting very familiar with these machines but still have a lot to learn.

Kooper06 · « **Reply #13 on:** February 13, 2022, 01:58:54 PM »

Real quick I just wanted to sent a shout out to NLG and everyone that supports this site. I’m a Newbie and would be lost with out this pleather of knowledge from all of you! Please continue what your doing and I look forward to reading all of the forums and all the help that’s offered!!!

Stayouttadabunker · « **Reply #14 on:** February 13, 2022, 04:36:45 PM »

I've noticed certain SG GME 1&2 chip pairs will make this message [Please Select WAMM or IPC] pop up on the blue VFD display.

What SG GME chips are you using?

qbert · « **Reply #15 on:** February 13, 2022, 04:50:36 PM »

You can set WAMM or IPC with the SGs that you have.
Re key with the 45 and go to 7.1.4 and set to WAMM.

Kooper06 · « **Reply #16 on:** February 14, 2022, 10:59:04 AM »

I am running the SG00312 for both the GME 1&2. I’ll try rekeying it and see what I get.

Kooper06 · « **Reply #17 on:** February 14, 2022, 05:03:49 PM »

So I got both my Key 45 and 224 clear chip today. It took a couple of runs to get it done right but my machine is back up and running like a champ. The Please Select WAMM or IPC I was able to change after the clear and Key. I believe I found it in section 7.4 but when I went back to double check after the machine was running I wasn’t able to get to that section. Lesson learned NEVER TAKE YOUR BOARD FROM A GOOD MACHINE AND PUT IT IN A BAD FOR TROUBLESHOOTING! Best take away from all of this is better S2000 understanding.

Stayouttadabunker · « **Reply #18 on:** February 14, 2022, 05:23:40 PM »

FYI The reason why you were allowed into those settings earlier is because you performed a clear procedure and then opened it with a Key.

Once you set it and exit out of the options, you can't get back in unless you start all over.

I could be wrong but that's my experience...lol

DB26 · « **Reply #19 on:** February 14, 2022, 05:30:52 PM »

Quote from: Kooper06 on February 14, 2022, 05:03:49 PM

Lesson learned NEVER TAKE YOUR BOARD FROM A GOOD MACHINE AND PUT IT IN A BAD FOR TROUBLESHOOTING! Best take away from all of this is better S2000 understanding.

Honesty, I think you should still be able to do this. Maybe it’s good advice for a newbie, but I swap boards all the time for troubleshooting. Having to do a clear and key because of a problem is just part of the process.

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Author Topic: Troubleshooting S2000 504B CPU (Read 1873 times)