Certified Technology Specialist (CTS) Practice Exam

When a control system's touch screen is reported as locked or not functioning, the first step should be to check all connectors. This is crucial because many issues with touch screens can stem from loose or disconnected cables that prevent proper communication between the screen and the control unit. By ensuring all connections are secure, the problem may be resolved without the need for further intervention, such as resetting the system or running diagnostics. This approach not only helps in addressing connectivity issues but also serves as a preventive measure against more complex repairs that could require replacement of parts or extensive troubleshooting. If the connectors are intact and properly connected, it would then be appropriate to move on to other troubleshooting steps, such as diagnostics or a system reset.