ROMs and RAMs

If you think you have bad ROMs or RAMs, run the self-test. If you see only a colored screen and cannot enter the self-test, see Table 3-3. Also refer to Table 3-4 if you think you have a RAM problem.

Table 3-4 Screen Colors Indicating Bad RAMs

Screcn Color

RAM Error Location

Red

Working RAM

Green

Playfield RAM

Blue

Motion Object RAM

99-080039

Base Assy. W/Gold Switch

99-080039

Base Assy. W/Gold Switch

99-080040

Black Joystick Assy.

99-080040

Black Joystick Assy.

CHAPTER 4

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