Gottlieb System 3

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Note: This page is a work in progress. Please help get it to a completed state by adding any useful information to it.


1 Introduction

Put system info here

Gottlieb System 3 Board Set - Alphanumeric Display
Gottlieb System 3 Board Set - Dot Matrix Display


2 Game Listing

2.1 Alpha-Numeric

2.2 Dot Matrix

3 Technical Info

3.1 The System 3 Board Set

3.2 System 3 Satellite Boards

3.3 The Wire Coloring Code

3.4 Connector Designations

3.5 Switch Matrix

3.6 Lamp Matrix

3.7 Power Supply

3.8 CPU Board

3.9 Driver Board

3.10 Sound Boards

3.11 Display Boards

3.11.1 Dot Matrix Display Controller Board

3.12 Solenoids and Relays

3.13 Flippers

4 Problems and Solutions

4.1 Ground updates

4.2 Power Problems

4.3 MPU boot issues

4.3.1 Relocating the battery from the MPU board

4.3.2 Repairing Alkaline Corrosion

4.3.3 Connecting a logic probe to the MPU

4.3.4 Using a PC Power Supply For Bench Testing

4.4 Game resets

4.5 Solenoid problems

4.6 Lamp problems

If your game is burning up lots of lamps quickly, check your voltage setting underneath the playfield. A setting of 110v can cause bulbs to burn out too quickly, 120v fixes the issue.

4.7 Switch problems

4.8 Display problems

4.9 Sound problems

4.10 Flipper problems

Flipper flutter--Check the EOS switch to verify that the wires don't have a cold solder joint issue. Flipper weakness--The EOS switch and flipper button switches can cause issues if they're not clean and adjusted properly. Replacing the EOS switches can improve strength dramatically.

4.11 Pop bumper problems

5 Repair Logs

Did you do a repair? Log it here as a possible solution for others.