Sure! First, ensure that the power supply to the PSX-12M is stable and within the specified range. Check for any loose connections or damaged wiring leading to the unit. Next, inspect the LEDs on the PSX-12M for any error indications, and consult the manual for troubleshooting guidance corresponding to the specific LED pattern. If the issue persists, consider performing a system reset by powering down the PSX-12M and then restarting it. If none of these steps resolve the issue, it may be necessary to contact Siemens technical support for further assistance.