The items listed below will assist in troubleshooting when a problem occurs. As a first step, check all wiring connector connections and verify AC power to the machine.
| PROBLEM | CAUSE | COUNTER MEASURE |
| When the main SW is turned ON, the machine is not activated. |
The cord is not plugged in. Primary or secondary fuse |
Firmly insert the plug into the outlet. Make sure that the power supply voltages are correct. First, remove the cause of overcurrent, then replace the fuse. |
| MONITOR screen is blackened and the fluorescent lamp does not light up. |
Primary or secondary fuse blown. |
First, remove the cause of overcurrent, then replace the fuse. |
| MONITOR screen is all blue. | Defective connections between boards. |
Make sure of correct connections between boards. |
| The color of image on MONITOR screen is incorrect. |
Incorrect monitor adjustment. | Make appropriate adjustments. |
| The on-screen image of the monitor sways or shrinks. |
The power source and voltage are not correct. |
Make sure that the power supply voltages are correct. |
| Marquee lamp doesn't light up. |
Fluorescent lamp needs Primary fuse is blown. |
Replace lamp. Check connector connections in the |
| Sound is not emitted. |
Sound volume adjustment is not Malfunctioning of sound board |
Adjust the service panel volume Check connection from base to |
| Machine Gun and Missile firng operation is not satisfactory. |
SW Malfunction. | SW replacement. Gun trigger part no. 509-5457 Missile Trigger part no. 509-5458 |
| Game makes sounds, but has no picture. |
Secondary fuse blown. | Replace the secondary fuse. |