Dell PowerEdge MX740c EMC PowerEdge Servers Troubleshooting Guide - Page 13
Power supply unit indicator codes
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Table 6. NIC indicators (continued) Status Link indicator is green and activity indicator is blinking green Link indicator is amber and activity indicator is blinking green Link indicator is green and activity indicator is off Link indicator is amber and activity indicator is off Link indicator is blinking green and activity is off Condition The NIC is connected to a valid network at its maximum port speed and data is being sent or received. The NIC is connected to a valid network at less than its maximum port speed and data is being sent or received. The NIC is connected to a valid network at its maximum port speed and data is not being sent or received. The NIC is connected to a valid network at less than its maximum port speed and data is not being sent or received. NIC identify is enabled through the NIC configuration utility. Power supply unit indicator codes AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator and DC PSUs have an LED that serves as an indicator. The indicator shows whether power is present or a power fault has occurred. Figure 4. AC PSU status indicator 1. AC PSU status indicator or handle Table 7. AC PSU status indicator Power indicator codes Condition Green A valid power source is connected to the PSU and the PSU is operational. Blinking amber Indicates a problem with the PSU. Not illuminated Power is not connected. Blinking green When the firmware of the PSU is being updated, the PSU handle blinks green. CAUTION: Do not disconnect the power cord or unplug the PSU when updating firmware. If firmware update is interrupted, the PSUs do not function. Blinking green and turns off When hot-plugging a PSU, the PSU handle blinks green five times at a rate of 4 Hz and turns off. This indicates a PSU mismatch with respect to efficiency, feature set, health status, or supported voltage. CAUTION: If two PSUs are installed, both the PSUs must have the same type of label. For example, Extended Power Performance (EPP) label. Mixing PSUs from previous generations of PowerEdge servers is not supported, even if the PSUs have the same power rating. This results in a PSU mismatch condition or failure to turn the system on. CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking indicator. Swapping the PSU to make a matched pair can result in an error condition and unexpected system shutdown. To change from a high output configuration to a low output configuration or vice versa, you must turn off the system. CAUTION: AC PSUs support both 240 V and 120 V input voltages with the exception of Titanium PSUs, which support only 240 V. When two identical PSUs receive different input voltages, they can output different wattages, and trigger a mismatch. Diagnostic indicators 13