Light emitting diodes (LEDs) provide status information on each array tray and its components. Green lights indicate a normal operating status, and amber lights indicate a hardware fault. Always check the status lights on the front and back of each array tray whenever you turn on the power. During power-up, the lights blink intermittently as the array and components complete the power-up process.
Caution -
Electrostatic discharge can damage sensitive components. Touching the command tray or its components without using a proper ground may damage the equipment. To avoid damage, use proper antistatic protection before handling any components.
Use the following procedure to check the lights on the front and back of the array: