Valley Spectra IV
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This section is dedicated to the repair, preservation, restoration and maintenance of Valley's Spectra IV.
1 Introduction
This section is dedicated to the repair, preservation, restoration and maintenance of Valley's Spectra IV. These are very special and unique machines. It was the only pinball machine manufactured by the Valley company (known for Billiards equipment) and one of only two solid state pinball machines where the entire playfield could rotate for additional players instead of trading positions in front of the machine. Players still have the option of leaving the playfield in place and the players can move as traditional pinball games.
2 General Information
2.1 Value
2.2 History
3 Technical Information
4 Problems and Solutions
4.1 Summary of Issues
4.2 Getting your board to boot
4.2.1 Main Board
4.2.2 Motor Driver Board
4.3 Reset Circuit
4.4 Power Supply
4.5 Re-Pinning
4.6 Errata
4.7 Substitute Parts
4.7.1 First Time Power-Up
4.7.2 Troubleshooting (Electronic)
4.7.3 Troubleshooting (Mechanical)
4.7.4 Calibrating the Rotating Playfield
5 Repair Support
5.1 New Integrated Logic Board
5.2 New Display Boards
6 References
6.1 Boot and Attract Mode
6.2 Service Positions (first from SE then NW Coin Doors)