IBM System x3620 M3 7376 Installation And User Manual

Also see for System x3620 M3 7376: Product guide Installation and user guide Manual

Contents

System-board LEDsThe following illustration shows the light-emitting diodes (LEDs) on the systemboard.Note: Error LEDs remain lit only while the server is connected to power. If youdisconnect power to the server, you can press and hold the light path diagnosticsbutton to light the error LEDs on the system board.System pulse LEDsThe following LEDs are on the system board and monitor the system power-on andpower-off sequencing and boot progress (see “System-board LEDs” for the locationof these LEDs).Table 4. System pulse LEDsLED Description ActionEnclosure management heartbeat Power-on and power-off sequencing. 1. If the LED blinks at 1Hz, it isfunctioning properly and no actionis necessary.2. If the LED is not blinking, (trainedservice technician only) replacethe system board.Chapter 2. Installing optional devices 25