HELP S+ sp chip change

[aklarry]

I have a S+ double diamond in the shop it had a 731 chip in it and I was trying to change it to keyout only no hopper. I know that is not an option with the 731 so I changed it to a 1071 Powered up the game and then keychiped it , everything worked fine until I tried to set options hitting the service switch it will let me go as far as 10 with 2 in the credit window and it stops, went back to the 731 it does the same thing stops at the same point. Did a ram clear and started over and no mater what sp I use it works fine until I try to change the settings and it stops on 10-2. and locks up. off then on it comes back up and works fine plays like it suppose to except letting me change anything Anyone have any Ideas
AkLarry
Also should say I put in a different board and game set came up and worked until I tried doing  a change and it does it on the new board also

[Firebird]

I had a machine do something similar to me, I had to clear the E-square, requires a test 123 clearchip. I think that is what it is called, because it sounds like your esquare is not going to accept any changes until you do.

[aklarry]

I think I have one I will try it next time out
AkLarry

[stayouttadabunker]

The funny/strange thing is this - the motherboard CO (6-pin e square chip)
should have been completely erased or reset when you changed the SP game eproms.
The drastic difference/change between an SP731 from an SP1071 should have forced the MPU to do this.
Try an SP1271 if you don't have clear chips.
The proper clear chip name I think is the IVC103 I believe.

I also recommend checking your door optics.
Are they working properly?
Improperly working door optics will also cause this phenomenon of option lockups.
I've had it happen to me one about 4 months ago.
I changed the door optics and all was fine.
I was allowed to get into the options and settings without any problems.
It was a weird one.

[aklarry]

It lets me go into options but when you start advancing using the switch it stops at 10 - 2 option and wont go further shut the door and it restarts and game plays fine
AkLarry

[stayouttadabunker]

That's what was happening with mine.
When I changed the door optics, I was able to advance through the options menus.
Before that, when I tried to advance the SP731 chip using the reset key -
the key would shoot me into the accounting program pages instead.
Normally , I would go to the next page
from [5-1]  ( Player Selectable Credit) - to [6-0] (Mechanical Bell)

What's bothering me is that you said that you were pressing the "Service Switch".
That switch on the coin-in optic board is for putting credits ( up to max) to test the machine's operation.
It has nothing to do with the options settings or advancing anything.
You're supposed to use a combination of the little white test switch, reset key, and button deck panel buttons.
Are you following a proper PSR for your SP731?

Also, the word terms "keychipping" usually is referred to when one is using "Key chips" on an S2000 - not an S+.