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LP-AM243: Jumper wire on board

Cedrick
Expert 8270 points
Part Number: LP-AM243


Hi,

Good day.

Our customer wants to know what the purpose of the wire found on their EVM. Since the placement of jumper wire is a bit too close to the IC ( U43). They say that when they try to open the package, it seems that the item is repacked before. And when they carefully check the board without opening the anti-static bag, then they discover that there is a jumper wire soldered under the board with hot glue.Kindly see the image below.



Looking forward to your response. Thank you.


Regards,

Cedrick

  • 0
    TI__Mastermind 22835 points

    Hi Cedrick,

    Can you ask the customer what is the revision of the board, and the serial number?  They may need to take the hardware out of the static bag to do so, which should be fine if they are careful.

    I am checking with the manufacturer to see if there are any additional details regarding the wire that we can share.

    Thanks,
    Mike

  • 0
    Guru 101225 points

    I've got one too. I'm not much concerned about it, but now I'm curious. My static bag wasn't re-closed.

    My PCB rev is PROC109E1 (M1). My SL# is 18211090003.

  • 0 in reply to Bruce McKenney
    TI__Expert 8270 points

    Hi Mike,

    I've got a feedback from our customer.

    I have opened the static bag and capture a photo on the modification. Please take a look.



    The SL# is 18211090061, the PCB# is PROC109E1. Thanks for your help.

    They also added this comment: I would like to share some thoughts on the issue. I understand that the board is not a product, it's just an EVM. But people do have expectations on the quality control from Texas Instruments. If modification is required due to a minor design fault, it's better to mention it in errata so that engineer can decide whether purchase the EVM from TI or, wait for a while until a new revision come up. Especially for AM243x, people might try to use it in High Voltage applications similar to the C2000 series, reliability is quite important.

    Regards,

    Cedrick
  • 0 in reply to Cedrick
    TI__Mastermind 22835 points

    Hi Cedrick, Bruce,

    Thank you for providing the details and pictures.  I confirmed with the team that the E1 revision of the board that you both have required this wire fix to get the correct 2.5V on VDD_2V5.  There is already an E2 version that is becoming available that has this fix included (will not require the wire).

    One important note, the AM243x device is in product preview, and the LP-AM243 EVM is in prototype release states right now.  This is reflected on both of the websites, AM2434 and LP-AM243.  While in prototype release (Rev E#), the hardware design is not considered final, as we are trying to get the hardware in customer's hands as quickly as possible.  These bugs will be fixed before fully releasing the kit (Rev A/B/etc).

    Thanks,
    Mike