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Author Topic: S2K Triple Diamond - Door Open MB issue  (Read 27 times)

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Offline stlscott

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S2K Triple Diamond - Door Open MB issue
« on: Yesterday at 07:22:28 PM »
Hi everyone, it's not often I have to ask for help on the S2K issues... been working these for a while and figure out the problems pretty easily.... this one has me stumped.

On the Display, it has the crazy Opendoor M and OpenDoor MB error.  This machine has a 502 board.

Here's a list of things I've done and knew to try:

- Replace PSU
- Replace MPU (3 different MPUs all did the same thing)
- Replace IO boards
- Replace Backplane
- Clear and Key after swapping MPU and Backplane
- Verify latest chipsets - 336
- bypass belly door switch

When you lift and lower the door lever, the display flashes, so I know it's getting the "door close".  Also, after the Clear/Key, it requires the "door close" followed by Initializing, which all works fine.  Optics have not been bypassed so I know they are working properly.  There is also NO damage on the MPU, but I'm including a pic anyway.
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Offline sixcardmark

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Re: S2K Triple Diamond - Door Open MB issue
« Reply #1 on: Yesterday at 08:22:08 PM »
The B part of MB is the bill validator door.  Bypass it.

 

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