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What is mean when the red LED D55 turning on ?

HYKS
on Dec 9, 2020

Hi,

I am trying to set up AD-96TOF1-EBZ with DragonBoard410C.

Unfortunately, they did not work well. The Linux system in the micro SD card could not get up. 

First, When I turned on power of AD-96TOF1-EBZ, I confirmed that the red LED D55 was on. Please refer to the attached picture.

Could you please kindly let me know the meaning of the D55 LEN turning on ? 

Best regards,

H.Kashima

  • 0 on Dec 9, 2020 9:21 AM 2 months ago

    Sorry, I have a typo.

    Could you please kindly let me know the meaning of the D55 LED turning on ?

    Best regards,

    H.Kashima

  • 0
    •  Analog Employees 
    on Dec 9, 2020 3:19 PM 2 months ago in reply to HYKS

    Hi,

    I think this means your DragonBoard 410C is not powered up. I tested it on my board. Before I turn on the 12V power supply to DragonBoard 410c, I can see DS5 is on. After I turn on the 12V power supply, DS5 is off.

    Could you check whether your power supply to DragonBoard 410C is working or not ? 

  • 0 on Dec 9, 2020 3:52 PM 2 months ago in reply to Xxu3

    Hi Xxu3,

    Thanks for your replies.

    Yes, as you said after I turned on 12V power supply, DS5 was off. But the Linux kernel did not get up.

    And I also confirmed 

    [1] DS5 was off even I did not connect DragonBoard 410C, I think that DS5 do not indicate  DrangonBoard 410C power off.

    [2] We have another set(AD-96TOF1-EBZ + DragonBoard 410C) that can work properly. I confirmed that before I turned on 12V power supply, DS5 was off. I think that DS5 do not indicate DrangonBoard 410C power off.

    So I want to know the error information that DS5 indicates.

    Best regards,

    H.Kashima

  • +1
    •  Analog Employees 
    on Jan 11, 2021 12:41 PM 1 month ago in reply to HYKS

    DS5 turns on only because of some current leakage which happens when the DragonBoard is not on, so it's not really showing any error information.

    When the DragonBoard is powered on, do any of the LEDs on the DragonBoard turn on? If no LEDs turn on then it mean the DragonBord is broken, if some turn on and one of them keeps blinking then it means the SD card is broken and needs to be rewritten.