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13 Posts

12-08-2019

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Lenovo P710 diagnotics LED on no logs

2021-04-03, 18:33 PM

Hi,

 

I am troubleshooting P710, the device was UPS shipped and does not post or boot. The workstation was working before.

 

The LED diagnostic amber light is on, and diagnostic USB led is blinking (attached picture). I have FAT32 formatted usb flash drive inserted after the USB  led is blinking. I left the device plugged-in for more than 15 mins (almost an hr, after reading from other posts of write delay).

 

Issue is - I do not get any diagnostic logs written on USB drive.

 

In addition, when power plugged the machine starts without me pressing the power on button. There are no beeps from system POST.

 

Any help to get the diagnostics from work station would be great ?

 

Thanks

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24 Posts

01-15-2021

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Re:Lenovo P710 diagnotics LED on no logs

2021-04-03, 20:03 PM

I'm not Lenovo staff, but I had the same situation. 

 

Remove all cards, and all memory, leave one CPU in. Do you get beep codes? If so, insert one DIMM in slot one for CPU one. Do you still get an error light?

 

I finally found my problem by swapping out various items until I isolated it to one DIMM I had. It takes a methodology and lots of patience.

 

I posted a reply to your question on the other thread. I got the impression that you have to plug in the USB drive within a certain amount of time after the error light starts. I also had to try several times before it worked. When it did work, it happened instantly. If you plug it in and the light doesn't start l flickering right away, it's not working. I don't think waiting an hour will make a difference. 

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13 Posts

12-08-2019

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Re:Lenovo P710 diagnotics LED on no logs

2021-04-03, 22:31 PM

Thanks for your response, I am going though the steps of reconnecting cards one by one. Get the diagnostics would certainly help, still trying to figure it.

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24 Posts

01-15-2021

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  • Message 4 of 20

Re:Lenovo P710 diagnotics LED on no logs

2021-04-03, 23:27 PM

Even getting a POST code will be of limited use. It'll be vague at best. The thing is, the motherboard either works or it doesn't. It's not like if the POST says "DMA Channel 14 did not give correct response" you'll know what that means and what component to focus on.

 

First you need beep codes. Then you need a good boot with a single DIMM, single CPU, and single graphics card. Swapping out each of those components in turn with ones that work in a similar system should get you farther than a POST code will. But, you need a second system to test each component in. Or, duplicates of each of those three (DIMM, CPU, GPU) to swap in order to find the bad one. Got anyone you can borrow parts from? 

 

Like I said, it's a pain and requires patience. 

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  • Message 5 of 20

Re:Lenovo P710 diagnotics LED on no logs

2021-04-04, 17:14 PM

Unfortunately, I do not get any visible POST and or any beeps. I removed all the memory from slots - that per guidance from other forum articles should give a beep for no memory installed. I do not receive anything.

 

I have another P900 and tested the suspect from P710 - RAM and Graphics card and found no issues. P710 has dual Intel Xeon E5-2630v4 and took both out and tested with a known good single Intel Xeon E5 2609V3 CPU compatible with P700/P710/P900/P910 series. No change in status i.e same issue with warning amber light on and diagnostic usb light blinking. Upon inserting a FAT32 formatted flash drive, no logs even after multiple trys.

 

At this point only 3 things left from P710 that is not tested

 

1) PSU - has a green light on the back, the whole system turns on and I do not have another known good power supply/system P700/P710 to test.

2) Front panel controls - Power button and USB ports

3) Mother board

 

At this point, as the diagnostic logs are not written at all  - I suspect the mother board is having issues. I reset CMOS, changed the battery (tested) - no change in status.

 

How can we test if mother board  is good?

 

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  • Message 6 of 20

Re:Lenovo P710 diagnotics LED on no logs

2021-04-04, 19:33 PM

If you remove everything, then install one CPU in socket 1 (the one closest to the front panel), so you have no cards, no DIMM, and just one CPU installed, and get no beep codes, then it's definitely a motherboard problem.

 

The only thing I would suggest checking is for bent pins in the CPU socket. You'll need a really good magnifying glass. If you find any, you'll need a very steady hand with a fine needle to fix it, and it's very easy to make things worse (speaking from experience.)

 

Perhaps someone from Lenovo will add their suggestions tomorrow when the work week starts back up.

 

Also, I may have replacement P710 motherboard I can sell you, or check eBay. 

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1107 Posts

01-14-2014

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  • Message 7 of 20

Re:Lenovo P710 diagnotics LED on no logs

2021-04-05, 19:52 PM

Good debug steps so far.  But, I'm concerned why you're unable to pull the diag log from the system.  When you plug in a FAT32 USB key, I'm assuming you're plugging this into the TOP-most USB port closest to the power button on the P710 system? If so, when you plug this device in, does the orange amber colored light begin to blink really fast? If so, this usually indicates that the diag log file is copying over to the USB key.  If not, this likely means that the log file is not copying over.  Have you tried a different USB key? Or, have you tried the Lenovo ThinkStation diagnostics app by connecting your phone to the top-most USB port with the diag mobile app opened? 

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13 Posts

12-08-2019

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  • Message 8 of 20

Re:Lenovo P710 diagnotics LED on no logs

2021-04-05, 20:05 PM

Thank you for the response

 

Yes, i have used multiple USB keys(5) with FAT32 formatted of different sizes from 1Gb to 16Gb. At any time after plugging the USB key there is no change in blinking rate of USB diagnostic port. Amber diagnostic led light is on and not blinking nor any change in status, once lit.

 

I installed the android Lenovo Workstation Diagnostics app and connected to the diagnostic usb port and there are no logs available.

 

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1107 Posts

01-14-2014

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  • Message 9 of 20

Re:Lenovo P710 diagnotics LED on no logs

2021-04-05, 20:18 PM

Thanks for this information.  Have you tried checking for bent pins in the CPU socket? If the CPU socket looks clean, have you tried doing a BIOS boot block recovery to see if you can recover the system? 

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13 Posts

12-08-2019

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  • Message 10 of 20

Re:Lenovo P710 diagnotics LED on no logs

2021-04-05, 20:21 PM

I have not yet looked at CPU bent pins, i will do this today.

 

How can i do BIOS boot lock recovery? Can you please refer me to the docs or any links that i can follow?

 

Thanks

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