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LLow0
Beginner
415 Views

Will failure analysis be provided for a field returned part which was manufactured in 2013? Please advise. Thank you

 
0 Kudos
14 Replies
Zawani_M_Intel
Employee
130 Views

Hi LLow0,

 

You may let us know which device it is. We can check if it is supported.

Thanks!

 

Wani

LLow0
Beginner
130 Views

Hi Wani,

 

It is a IOFPGA part. Its part number is EP4CGX50DF27C8N (CPN: 16-4288-01). Photo has been attached. Than you

 

Lay Foon

Zawani_M_Intel
Employee
130 Views

Hi Lay Foon,

 

It is supported device.

Let's tell me a story of this fails unit :

 

1. What is the failure symptom? Please elaborate the failure symptom in detail. 

2. When did the failure happen? How did you discover the failure? 

3. How did you determine the failure? Please elaborate the procedures. 

4. Does the failure unit ever working before failure?

5. Did they violate solder re-flow temperature profiles, moisture sensitivity? Please provide the re-flow temperature profiles. 

6. Did you swap the failure device to a known good board? Is the failure following the device or board?

7. Is this a prototype build or volume/mass production?

8. Kindly provide quantitative investigation result that could proof the failure is Intel FPGA induced.

 

Wani

 

 

LLow0
Beginner
130 Views

Hi Wani,

 

Kindly refer to the feedback below:

1. What is the failure symptom? Please elaborate the failure symptom in detail. 

Customer reported that copper SFP was inserted in the device. it seems to be a hardware failure and no information can be retrieved.device is hard down. By further test the customer board and confirm the board failed to boot up and failed Diagnostic test. We suspected on IOFPGA U45 since there is no progress of POSTCODE led after TTL_RESET_L is high. We measured voltage and clock supplied to IOFPGA U45, all good. We also measure impedance for IOFPGA_CPU_PCIE signals compared with KGB no abnormality. Perform X-ray on IOFPGA U45 and there is no abnormality on solderability. Perform replacement on IOFPGA U45 and perform online test also offline diag test, the result is passed. Through isolation steps, the root cause is fixed to IOFPGA U45.

 

2. When did the failure happen? How did you discover the failure? 

Failed found once try to boot up the board. Suspected on IOFPGA U45 since there is no progress of POSTCODE led after TTL_RESET_L is high

 

3. How did you determine the failure? Please elaborate the procedures. 

Kindly refer to the answer from question (1)

 

4. Does the failure unit ever working before failure?

Yes. It work before failure.

 

5. Did they violate solder re-flow temperature profiles, moisture sensitivity? Please provide the re-flow temperature profiles. 

No. This part did not undergo any reflow process before this.

 

6. Did you swap the failure device to a known good board? Is the failure following the device or board?

No. However, we will swap the failure device on another good board to confirm its failure first if ALTERA is willing to the support the FA for this part.

 

7. Is this a prototype build or volume/mass production?

Volume/mass production. However, it is a field returned part from our end customer.

 

8. Kindly provide quantitative investigation result that could proof the failure is Intel FPGA induced.

By replace this part with another good part, the board can function well now and work normally.

 

Regards,

Lay Foon

LLow0
Beginner
130 Views

Hi Wani,

 

Please advise whether ALTERA is still willing support the FA for this part. If yes, we will re-mount this part on another board and re-test it to confirm its failure before send the part to you for further FA. Thank you.

 

Regards,

Lay Foon

LLow0
Beginner
130 Views

Hi Wani,

 

Please advise. Thank you.

 

Regards,

LayFoon

LLow0
Beginner
130 Views

Hi Wani,

 

Please kindly confirm with us soonest so that we can decide the next action for this part later. Thank you..

 

Lay Foon

LLow0
Beginner
130 Views

Hi Wani,

 

We are still waiting for your respond. Please quick advise whether Altera is still wiling to support the FA for this part. Thank you

 

Regards,

Lay Foon

Zawani_M_Intel
Employee
130 Views

Hi Lay Foon,

 

Yes, we are happy to support for this return.

If you wish to continue with ERMA, please do let us know so we can work with more details on your issue.

Thanks!

 

Wani

LLow0
Beginner
130 Views

Hi Wani,

 

Thank you to confirm it. We will re-test this part on another board first and will share the result to you after it is completed. Will keep you posted. Thank you.

 

Best Regards,

Lay Foon

Deshi_Intel
Moderator
130 Views

Hi Lay Foon,

 

I will be covering for Wani as she is out of office.

 

Sure, I will be looking forward to hear your test result update on swapping the bad unit on good board.

 

You mentioned a lot about Jabil diag test failing result but it's unclear to me to help isolate which design block inside FPGA maybe failing.

  • Can you elaborate further on customer failure symptom ?
  • What protocol test is being run ?
  • Which FPGA IP block is being used ?
  • Which FPGA internal signal that customer monitor that show the test failure ?

 

Thanks.

 

Regards,

dlim

Deshi_Intel
Moderator
130 Views

Hi Lay Foon,

 

Any update from my last enquiry ?

 

I have not hear back from you for 1 month.

 

Thanks.

 

Regards,

dlim

LLow0
Beginner
130 Views

Hi dlim,

 

Sorry for overlook this email. We have verified this part on another good board and found the original failure is no longer duplicated now. It passed the test after re-ball and remount on another board. We suspected that it may related to the solder connectivity issue on this part and not related to the component reliability failure. Therefore, we want to drop this FA request from you. Than you.

 

Regards,

Lay Foon

Deshi_Intel
Moderator
130 Views

Alright. Np.

 

Thanks for the update !

 

I am now setting this case to closure.

 

Regards,

dlim

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