The NBA game time uses a linear actuator to control the ball gate. The linear actuator has a spring loaded mount that pushes the gate back up if it is pressed down from the top side of the game. The gate actuator also has internal limit switches to control the movement of the push rod when it reaches the end of its travel. For this reason, we always supply voltage to the actuator so the gate will remain closed until otherwise told to do so. When the game is coined up the main board sends a signal to a relay board located in the front cabinet of game which then reverses the polarity of the voltage causing the gate to open.
No movement from the ball gate
Step 1 - inspect the wiring and connections from the actuator to the relay board located inside the front podium for signs of damage.
Step 2 - check the 12vdc input voltage to the relay PCB at connector J1 between pins 1 (orange wire ) and 2 (black wire) also look for the input signal from the main pcb. This signal can be measured between the brown/yellow trace and the orange wire on J1. You will see 12vdc when the signal is present
- if no signal is present from the main board, check the wires and connections to the J3 connector at the main board and replace the main board
-if the signal is present proceed to the next step.
Step 3 - check for output voltage on the J2 connector of the relay PCB. In standby mode you will see +12vdc from the black wire (positive) to white wire (negative). When the game is coined up the voltage will reverse polarity.
-if no voltage the replace the relay PCB.
-if voltage is present and the wiring is good then replace the actuator.