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.
-