Dell Force10 S4820T Getting Started Guide - Page 15

Table 1 lists the LED definitions for the S4820T system. Table 1. System LED Displays Feature System LED TEMP LED DIAG LED FAN LED STACK LED LOCATOR LED Detailed Description Comment • Solid blue -Normal Operation I/O side • Blinking blue -Booting • Solid red -Critical system error • Blinking red -Noncritical system error (fan fail, power supply fail) • Off: Normal temperature PSU side • Solid red -Overtemp (Refer NOTE:) • Off -Normal operating PSU side • Solid green -System Booting or Diagnostics • Solid green -fan powered PSU side and running at the expected rpm • Solid red -fan failed • Solid blue -Switch in stacking master mode PSU side • Solid green-Switch in stacking slave mode • Off - Switch in stand alone mode • Blinking blue - locator PSU side function is enabled • Solid blue - locator function is disabled NOTE: The system temperature threshold is 75°C. When one of the thermal sensors exceeds this temperature, the TEMP LED turns RED. Hardware Overview 9