LED

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Introduction

Depending on the model, one or more diagnostic LEDs are present on the HMP device:

  • The HMP350 and HMP300 models have two diagnostic LEDs (power and system),
  • The HMP200 model has three diagnostic LEDs (power, system, and network),
  • The HMP130 and HMP100 models have a single diagnostic LED.


These LEDs can be used to quickly assert the status of the device according to the color and blinking frequency, as is detailed below.

HMP350 and HMP300

HMP350

PWR LED

The PWR (power) LED is:

  • solid green (without blinking) when power is OK and the internal components are powered up;
  • solid red (without blinking) when the input voltage level is out of bounds;
  • blinking red briefly once every two seconds (i.e. on for 250 ms and off for 1750 ms) when the system is powered off (i.e. the shutdown is completed and the HMP can be safely unplugged), yet the HMP is under external power (pressing the blue button turns on the HMP);
  • blinking red at 2 Hz (i.e. twice every second) when the internal temperature is over the limit and the HMP has automatically powered itself off (with automatic wake up) to cool down.

SYS LED

The SYS (system) LED is:

  • blinking green when the HMP is running normally (after the boot has completed);
  • blinking red four times per second when the HMP is in Recovery mode.
  • off, when the device is shut down.

Network LEDs

Ethernet port LEDs

The two LEDs present on the Ethernet port connector have the following meaning:

  • Left LED shows the network speed by changing its color, as following:
    • solid green for 1000 Mbps (Gigabit) network;
    • solid orange for 100 Mbps network;
    • off for 10 Mbps network.
  • Right LED has a yellow color and shows the network activity, as following:
    • solid color when the link is present;
    • blinks when there is link activity (i.e. network packets);
    • off when the link is not present.

HMP200

HMP200

PWR LED

The PWR (power) LED is:

  • solid green (without blinking) when power is OK and the internal components are powered up;
  • solid red (without blinking) when the input voltage level is out of bounds;
  • blinking red briefly once every two seconds (i.e. on for 250 ms and off for 1750 ms) when the system is powered off (i.e. the shutdown is completed and the HMP can be safely unplugged), yet the HMP is under external power (pressing the blue button turns on the HMP);
  • blinking red at 2 Hz (i.e. twice every second) when the internal temperature is over the limit and the HMP has automatically powered itself off (with automatic wake up) to cool down.

SYS LED

The SYS (system) LED is:

  • blinking green once per second when the HMP is running normally (after the boot has completed);
  • blinking red four times per second when the HMP is in Recovery mode.
  • off, when the device is shut down.

Network LED

The network LED (after startup) is:

  • green with occasional or no blinking when the Ethernet link and a valid IP address are present (the blink represents network traffic);
  • green with regular orange blinking when the Ethernet link is present, but the IP address is auto-configured in the range 169.254.1.0-169.254.254.255 (indicates DHCP server problem);
  • solid orange when no IP address is assigned (this should only happen momentarily between addresses changes);
  • blinking red once per second (in sync with SYS LED) when there's no Ethernet link detected and the IP address is auto-configured in the range 169.254.1.0-169.254.254.255;
  • off, when there's no Ethernet link detected (yet a valid IP address is present).

HMP130 / HMP100

HMP130

The diagnostic LED is:

  • blinking green once per second when the HMP is running normally;
  • blinking green four times per second when the HMP is in Recovery mode;
  • blinking orange when there's an IP address conflict or no DHCP server is found (the HMP is using an auto-configured IP in the range 169.254.1.0-169.254.254.255);
  • alternates between solid orange and solid red when the HMP doesn't have an IP address (should only be temporary);
  • solid red (without blinking and while the network cable is unplugged) when there's a hardware problem with the HMP (this most probably will require an RMA);
  • off, when the device is shut down.
This page was last modified on 16 November 2016, at 14:36.