System Test Considerations

As previously mentioned, the logic board A will free run in the particular game attract mode solely with +5 volt applied. Ribbon cables 1 & 2 are output lines and can be removed without affecting the free-run mode. Ribbon cable 3 is an input line and can also be removed for test purposes while free running. The audio board C can be effectively diagnosed with proper power applied and a speaker. The logic board generates most sounds by grounding various control lines through ribbon cable 2....

Monitor Problems

Here is a systematic guide to trouble shooting a monitor that blows breakers. Monitor must be connected to a good CPU. Check for burned components. The first thing we want to do is be able to power up the monitor without blowing breakers - then do trouble shooting. POWER OFF. Unplug yoke from monitor board. Unpiug socket from CRT POWER ON. If breakers hold Check outputs of -15v, + 15v, and +5v regulators. Output must be within 0.5 volt tolerance. A. Use O-scope to check deflection circuits for...

General Information And Periodic Maintenance

Your Cinematronics game is designed much the same as conventional video games. The major exception is the use of an alternate means of visual display . . . the patented Vectorbeam tm * monitoring system. However, the game is built of the same basic building blocks as any other video game. The Power Supply provides all the necessary voltages for the CPU board, audio board, Vectorbeam monitor and fluorescent light. As you look in the back of the cabinet, it is located on the lower right side of...