Williams System 9 - 11
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1 Introduction
Put system info here
2 Games
2.1 System 9
- Space Shuttle
- Sorcerer
- Comet
2.2 System 11
- Grand Lizard
- High Speed
- Road Kings
- Gold Mine (Shuffle Alley)
2.3 System 11a
- Pinbot
- Millionaire
- F-14 Tomcat
- Fire!
- Fire! Champagne Edition
2.4 System 11b
- Big Guns
- Space Station
- Cyclone
- Banzai Run
- Swords of Fury
- Taxi
- Jokerz!
- Earthshaker
- Black Knight 2000
- Police Force
- Elvira and the Party Monsters
- Bad Cats
- Mousin' Around!
- Whirlwind
2.5 System 11c
- The Bally Game Show
- Pool Sharks
- Rollergames
- Diner
- Radical!
- Dr. Dude
- Riverboat Gambler
- Bugs Bunny's Birthday Ball
3 Technical Info
4 Problems and Fixes
4.1 Power Driver Issues
This may not apply to some, as MPU might have been part of it.
4.2 MPU Issues
4.3 Power Supply Issues
4.4 Display Driver Board
Possibly doesn't apply to some, can't think of an example.
4.5 Audio
System 11 games are known to have some amount of hum. An easy thing to test is to make sure all boards are secured tightly with all screws. This will insure the boards have a proper ground.
Another cause of hum could by an inconsistent +5 volts from the power driver board. An indicator of this being the cause of your hum would be the game occasionally resetting as well. Replacing caps C8 and C10 on the power board may fix this issue.
5 Game Specific Problems and Fixes
Example would be servo controller on Independence Day pinball
6 Repair Logs
Did you do a repair? Log it here as a possible solution for others.