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Author Topic: IGT S+ Clear memory  (Read 2661 times)

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Offline Cashen87

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IGT S+ Clear memory
« on: May 23, 2018, 05:05:36 AM »
Hello. I have a question about clering clearing the machine. When you use clear chip in the machine then you loose lose memory. Are the memory on the motherboard or the mpu board you losse lose?
« Last Edit: May 23, 2018, 09:07:25 AM by shortrackskater »

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Re: IGT S+ Clear memory
« Reply #1 on: May 23, 2018, 06:50:13 AM »
Technically speaking, when you use a Clear chip you don't lose memory, you just change the memory settings to the factory default settings, so you lose your prior memory settings if they were different from what the factory default ones are. I guess to a lot of people this is about the same thing but I wanted to clarify. The Clear chip doesn't erase the memory and put a bunch of zeroes in there, it puts good data in there but the data is settings that are usually different from what you want, so you then have to press the white TEST button and get into the menu system and change a lot of settings to what you want them to be. That's why it isn't recommended to do a Clear ram process unless absolutely needed.

The machine's settings are stored in the cmos ram chip, it is a large chip located in a socket near the Game and Reel chips. When the machine is not being powered by your household electrical power the battery on the mpu keeps the cmos ram data intact so it doesn't get corrupted/lost. So if you remove the cmos ram chip from the mpu board it will not have any power to it, will lose its data contents. This is different from an eprom chip or an eeprom chip, you can remove an eprom or eeprom chip from the circuit board and it will retain its data, it does not need power to keep its memory contents intact. A "ram" chip loses its stored data when it does not have power, a "rom" chip does not.

On the motherboard there is a special chip called an "eeprom", it is there for security reasons and it contains information about the machine's configuration. When you use a Clear chip it may rewrite this eeprom chip but I'm not sure about that. The eeprom chip is soldered to the motherboard at the factory, but sometimes someone has added a socket while replacing the eeprom. It is called an "eeprom" instead of an eprom because it is "electrically erasable", whereas an "eprom" is erasable by exposing it to UV light for 20-30 minutes.

In the photo below the cmos ram chip is circled in yellow. On the board it is marked "CMOS". This photo is a 10mhz mpu board, the 16mhz board is a little different but similar. You can easily tell if an mpu board is the 10mhz version because it has the round blue volume control along one edge. The name "cmos" comes from the internal construction of the chip, the cmos material allows the chip to use very little power, so the battery lasts longer. 
« Last Edit: May 29, 2018, 10:17:49 AM by rokgpsman »
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Offline Cashen87

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Re: IGT S+ Clear memory
« Reply #2 on: May 23, 2018, 07:40:44 AM »
Okey. So when the cmos chip are taken out off the board then it will lose memory. Then you install the cmos chip back the machine will the memory come back then?





« Last Edit: May 23, 2018, 09:13:27 AM by shortrackskater »

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Re: IGT S+ Clear memory
« Reply #3 on: May 23, 2018, 07:41:38 AM »
NO.

I think after you re-install the cmos chip on the board you will need to do a Clear ram. Then you will need to press the white TEST button inside machine and change settings to what you need them to be. You can try skipping the Clear ram step and see if things work, but if you've had the cmos chip off the board it may need a Clear ram process done to get it initialized with good data.
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Re: IGT S+ Clear memory
« Reply #4 on: May 23, 2018, 08:06:12 AM »
So the machine will not work like it should when the cmos chip are taken out and replaced back. So if i understand this right the mpu board are brocken then?

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Re: IGT S+ Clear memory
« Reply #5 on: May 23, 2018, 08:08:31 AM »
aasb gaeryer  drg  adr rera odfok  :fryingpan:

1- install cmos ram chip
2- power up machine and see what error it gives
3- open and close door a few times, see if errors go away
4- press white TEST button and change settings as needed

Or sell the machine and buy yourself an x-box / nintendo. They are a lot of fun and very easy to operate.   :garfield:
« Last Edit: May 23, 2018, 08:25:07 AM by rokgpsman »
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Re: IGT S+ Clear memory
« Reply #6 on: May 23, 2018, 08:25:42 AM »
So will the ram clear get the cmos chip back to normal whit memory and all good data back

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Re: IGT S+ Clear memory
« Reply #7 on: May 23, 2018, 08:31:17 AM »
.
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Re: IGT S+ Clear memory
« Reply #8 on: May 23, 2018, 09:03:37 AM »
The machine works like it should

Offline Cashen87

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Re: IGT S+ Clear memory
« Reply #9 on: May 23, 2018, 11:39:12 AM »
Everthing on the machine works like it should. I can not see no different on the machine after i take out the cmos chip in 3 minutes. I just have the 61 error code after that and i remove it when i hold the white self test button in 3 sec and the machine works good.

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Re: IGT S+ Clear memory
« Reply #10 on: May 24, 2018, 05:15:08 AM »
When you change a new 3.6v lithium battery on mpu board then the board dont have no power. So then the cmos ram chip will lose data, if i dont take wrong?

 

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