WMS 550 manual have schematics?

[Greg]

Does the WMS 550 manual have schematics?
I am interested in how the 2 pcbs connect through the back plane but don't have permission to the downloads.
Thanks,
Greg

[shortrackskater]

Yes the second manual for Williams 550 has multiple schematics in the download.

(WMS_Upright_Gaming_Devices_Model_55X_Service_Manual_A_005044____4_W[1])

To enable access, simply become a contributing member. You can join just for a month if you want, or for however long you wish.
Then you have access to ALL the manuals and information in the NLG File System. 

[Greg]

Thank you for taking the time to point me n the right direction.

The manual is very helpful!
Unfortunately it doesn't have a backplane schematic.

In the 1980's  and 90's Williams was real good about providing schematics of their products
and I was hopeful that would remain true with their gaming systems.

I have several 550 board-sets with software just lying around so I am building a machine in
a Sircoma cabinet as a winter project.

The backplane I have is for a reel type game (A-17937-01) and I need a A1905-01 or A-003622 or A-00632-01
or a schematic of one of these backplanes so I can use the PCB connectors from the A-17937-01 I already have
and just make a custom backplane PCB for them.

The power, audio out and I/O are easy to figure out but the bus is going to take a little work to reverse engineer.


Thanks again for your help!
Greg