Lenovo ThinkServer TD200x Hardware Maintenance Manual for TD200x - Page 48

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. • See Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). • If an action step is preceded by "(Trained service technician only)," that step must be performed only by a trained service technician. Sensor Sys Board Fault has transitioned to critical from a less severe state. Error A sensor has changed to Critical state from a less severe state. 1. Check the system-event log. 2. Check for an error LED on the system board. 3. Replace any failing device. 4. Check for a server firmware update. The Power Supply (Power Supply: n) Error has Failed.(n = power supply number) Sensor PS n Fan Fault has transitioned Error to critical from a less severe state.(n = power supply number) Power supply nhas failed.(n = power supply number) A sensor has changed to Critical state from a less severe state. Important: Some cluster solutions require specific code levels or coordinated code updates. If the device is part of a cluster solution, verify that the latest level of code is supported for the cluster solution before you update the code. 5. (Trained service technician only) Replace the system board. 1. If the power-on LED is lit, complete the following steps: a. Reduce the server to the minimum configuration. b. Reinstall the components one at a time, restarting the server each time. c. If the error recurs, replace the component that you just reinstalled. 2. Reseat power supply n. 3. Replace power supply n. (n = power supply number) 1. Make sure that there are no obstructions, such as bundled cables, to the airflow from the power-supply fan. 2. Replace power supply n. (n = power supply number) 40 ThinkServer TD200x Hardware Maintenance Manual