Gottlieb reset circuit update
A later reset circuit gives a longer reset and locks out the CMOS RAM faster at power-off. To update an early board: R159 2.7M to 3.9M, remove R160, R161 27K to 43K, R162 6.8K to 2K and R163 27K to 6.8K.
Systems
Related tips
- The slam switch must be closed for the game to run
- Displays light at once showing zeros
- Permanently defeating the slam switch on the CPU board
- CPU address and data line check
- Joker Poker: game PROM letter
- Dragon: game PROM letter
- Charlie's Angels: game PROM letter
- Solar Ride: game PROM letter
Source: Gottlieb System 1 Pinball Repair from 1977 to 1980, Clay Harrell (pinrepair.com)