The CPU memory battery is built into a non-socketed RAM chip

Capcom has no AA battery pack. Settings and scores are kept in a 28-pin 6264-type CMOS RAM with a battery fixed on top of the chip. The battery can't be replaced, so when it dies the whole RAM chip is replaced; it is soldered in, not socketed. Maxim and ST both make this type of part.

Systems

• Capcom

Related tips

• Battery voltage at the RAM but memory still lost
• Logic chips worth stocking
• Replace a failed 6116 RAM with a 6264
• CPU still will not boot after the basics
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• No sound, only amplifier hiss with the volume up
• Game stuck showing the last four high scores
• Game resets every two seconds

Source: Capcom Pinball Problems/Solutions