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Title: Reading 7 segment display on CPU board Post by: PaulV on April 26, 2010, 10:49:55 AM I'm completely new to the Williams 40x slot machines and have a question that may have an obvious answer but I don't see it. I see reference to checking the 7 segment display on the CPU board to see what number is displayed. By removing the board, I can find the display. But when the CPU board is plugged back into the machine, the display is covered by the cage and the I/O board above it. How does one see this display when the machine is powered on and in operation. I see comments about people saying their board reads a "2" or a "5" etc, but how do you see it when it's covered?
Title: Re: Reading 7 segment display on CPU board Post by: Slotmaster on April 26, 2010, 01:39:06 PM Not the best WMS engineering now was it...
It will flash an 8 on boot up and then go blank. Most common thing seen is a steady 8 (no boot), anything else is usually eproms missing which will be heard by the bongs. Title: Re: Reading 7 segment display on CPU board Post by: PaulV on April 26, 2010, 02:04:02 PM Thanks, yes, rather poor planning on Williams part. But how the heck do I even see if it's flashing 8 or some other number though? :103-
Title: Re: Reading 7 segment display on CPU board Post by: Slotmaster on April 26, 2010, 11:00:11 PM I have not looked at a WMS REEL other than a Bluebird in a while but we usually just count the bongs.
One bong means boot. Title: Re: Reading 7 segment display on CPU board Post by: cruisepl on April 27, 2010, 03:48:22 AM I have not looked at a WMS REEL other than a Bluebird in a while but we usually just count the bongs. One bong means boot. From WMS 400 manual: No start up bong speaker disconnected or sound circuit problem 1 bong normal system 2 bong Bad CPU board EPROM XU30 3 bong Bad CPU board EPROM XU31 4 bong Bad CPU board EPROM XU17 5 bong Bad CPU board EPROM XU18 6 to 9 not used 10 bongs Bad CPU board sound RAM U38, U39 or XU40 |