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(Topic ID: 320964)

Wms System 7 MPU Error Code

By JethroP

1 year ago


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  • Latest reply 1 year ago by JethroP
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#15 1 year ago
 
^^^

PINTEC

Pinside member

US Chicago, IL

6y 51,550 511

OP
Quoted from JethroP:

When game is powered up the MPU shows a "1", the lower LED is on, and blanking is off. I have the MPU/driver board on the bench. I have not run any diagnostics (pressed diagnostic button). Just showing what comes on at power up. What would this tend to indicate?
[quoted image]

Ic 13 RAM fault:

Solder cracking visible
Re flow solder cracks on all thru hole socketed IC's that handle Ram select signals:

IC 32, IC 12, IC 31 IC 11

Solder cracks (resized).pngSolder cracks (resized).pngf50737dd17fb1fa3fc4ea30a50ed8e6a30e03761 (1) (resized).jpgf50737dd17fb1fa3fc4ea30a50ed8e6a30e03761 (1) (resized).jpg
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#22 1 year ago
 
^^^

PINTEC

Pinside member

US Chicago, IL

6y 51,550 511

OP
Quoted from JethroP:

Here is my board, IC17 has been removed for this picture.
[quoted image][quoted image]

Ic 17 is factory altered from factory 2532 and Jumped to use a 2732 Rom if a test chip is used make sure it gets burned on a 2732 or return the socket to a 2532

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