appears on the screen. There are three ROMs in Football (Program ROMS 1. 2, 3).

The self-test stops only when the self-test switch is set to "off". To start again set it to "on".

No scrollfield motion.

"X" or "O" character (or both) not displayed.

No crowd sound (indicates logic circuitry malfunction).

Crowd sound does not intensify (indicates possibility that switch is bad). See next test.

No beep sound.

Either some or all lamps are out.

No switch setting display or display ir correctly matching the actual setting.

game play

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