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vvuk · 02-28-2022, 12:15 AM

I swear I saw an image of this somewhere, but can't find it -- does anyone have the o350 mainboard env chip locations mapped out, or do I have to go hunting?

I've got an o350 + IP59 cbrick that's reporting bogus temps and a bogus 12V voltage; says 5.813V on the 12V rail both powered off and powered on! 12V #2 reports 0 and 12V respectively as I'd expect. (Temps are all at 3C except for one 77C, all of which is totally wrong.)

Relatedly, does anyone know where 12V (#1) and 12V #2 come from? The fact that it's showing 5.813 powered off makes me doubtful the supply is an issue, but I'd like to measure at least.

**Raion** · 02-28-2022, 01:49 AM

The voltage reading being off sounds to me like a bad vrm.

weblacky · 02-28-2022, 03:32 AM

I need to know these locations myself, I've never seen an image other than a Fuel mainboard for DS1780 locations.

jan-jaap · 02-28-2022, 09:05 AM

+12V comes straight from the PSU. Just exchange PSUs and see if the problem move with the PSU or stays with the system. I bet you it's the env chip in the system. It's likely on the mainboard somewhere on the area underneath the chassis fans.

The PSU is a rebadged Delta DPS-500EB. It provides:

15V BIAS @ 50mA
-12V @ 0.5A
5V @ 2.0A
12V @ 40A

It's pretty obvious you won't go far with 0.5 or 2.0A and the BIAS supply is almost certainly an always-on AUX supply (for the L1 in case of the Origin). So everything derives from the 12V rail, as in most modern PC designs.

NB: There's a known manufacturing fault in these PSUs, or at least in older revisions of it. Look for Intel Technical Advisary TA-0674-5. The primary PFC diode will fail and blow up (this happened to my O350). I serviced this and other PSUs and the problem didn't come back.

**weblacky** · 02-28-2022, 10:36 AM

(02-28-2022, 09:05 AM)jan-jaap Wrote: +12V comes straight from the PSU. Just exchange PSUs and see if the problem move with the PSU or stays with the system. I bet you it's the env chip in the system. It's likely on the mainboard somewhere on the area underneath the chassis fans.

The PSU is a rebadged Delta DPS-500EB. It provides:
15V BIAS @ 50mA

-12V @ 0.5A

5V @ 2.0A

12V @ 40A

It's pretty obvious you won't go far with 0.5 or 2.0A and the BIAS supply is almost certainly an always-on AUX supply (for the L1 in case of the Origin). So everything derives from the 12V rail, as in most modern PC designs.

NB: There's a known manufacturing fault in these PSUs, or at least in older revisions of it. Look for Intel Technical Advisary TA-0674-5. The primary PFC diode will fail and blow up (this happened to my O350). I serviced this and other PSUs and the problem didn't come back.

Useful info on this: https://gainos.org/~elf/sgi/nekonomicon/...720/1.html

worthless info on this: http://cwcyrix.nsupdate.info/intel-legac...lures1.pdf

Good find! Still would love hints on those DS1780 IC locations.

jwhat · 02-28-2022, 11:38 AM

Hi vvuk & co,

there are two DS1780 chips on the O350 2U_INT_53 interface board.

Looking from front they are on right hand side (same side as power supplies) and marked as: G7G5 & H5G5 and sit in section in between the right hand side blue plastic system board locator and the DALLAS DS1742W-120 chip .

I am getting this from looking at a few photos of the board, as I do not have a nice single high res picture of the entire board.

I hope this is helpful.

Cheers from Oz,

jwhat/John.

**weblacky** · 02-28-2022, 12:37 PM

Well, how many NODEs are listed on an O350 for env?

Each node is a DS1780, right?

Can’t we determine the number of ICs at least with this method or do I have that wrong?

vvuk · 02-28-2022, 04:09 PM

(02-28-2022, 09:05 AM)jan-jaap Wrote: +12V comes straight from the PSU. Just exchange PSUs and see if the problem move with the PSU or stays with the system. I bet you it's the env chip in the system. It's likely on the mainboard somewhere on the area underneath the chassis fans.

Thanks -- I've actually got two spare PSUs that I can try swapping in, but given that the 5.813V reading stays the same whether power is off or on, and that the temperatures are bogus I'm betting on the env chip as well. Do you happen to know if the "12V" and "12V #2" readings are just the 12V rail at two different locations, or the independent 12V rails from each of the two PSUs? Given that the PSUs are supposed to be redundant I would have expected it to just fault one PSU and continue from the other, but instead it triggers an auto-shutdown (in 30s, so certainly not urgently; maybe that's a configurable thing, and this is just set to shut down on any PSU fault?)

I'll try to take some high rez pictures of the mainboard when I look for the chips.

Also, in case this isn't known.. this o350 happened to be missing the CPU VRM. The VRM turns out to be a standard part, VR091B080CS that's used in some HP servers as well. I bought one inexpensively ($15) on ebay, it's identical to the VRM board that's in my other o350s.

jan-jaap · 02-28-2022, 09:05 PM

(02-28-2022, 04:09 PM)vvuk Wrote: Do you happen to know if the "12V" and "12V #2" readings are just the 12V rail at two different locations, or the independent 12V rails from each of the two PSUs?

I don't know for sure, but my bet is on the independent PSUs because my O350 (which has only a single PSU per node) only lists 12V#2:

Code:
M2100629-001-L2>env

001c01:

Environmental monitoring is enabled and running.

Description    State       Warning Limits     Fault Limits       Current

-------------- ----------  -----------------  -----------------  -------

          1.8V    Enabled  10%   1.62/  1.98  20%   1.44/  2.16    1.791

           12V 

        12V #2    Enabled  10%  10.80/ 13.20  20%   9.60/ 14.40   12.000

          3.3V    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.302

        12V IO    Enabled  10%  10.80/ 13.20  20%   9.60/ 14.40   12.063

        5V AUX    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    5.044

      3.3V AUX    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.268

    PCI 5V AUX    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    5.044

      PCI 3.3V    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.302

      PCI 2.5V    Enabled  10%   2.25/  2.75  20%   2.00/  3.00    2.509

        PCI 5V    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    4.966

  XIO 12V BIAS 

        XIO 5V 

      XIO 2.5V 

  XIO 3.3V AUX 

 IP53 3.3V AUX    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.268

   IP53 5V AUX    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    5.044

      IP53 12V    Enabled  10%  10.80/ 13.20  20%   9.60/ 14.40   12.000

     IP53 VCPU    Enabled  10%   1.13/  1.38  20%   1.00/  1.50    1.241

     IP53 SRAM    Enabled  10%   2.25/  2.75  20%   2.00/  3.00    2.470

     IP53 1.5V    Enabled  10%   1.35/  1.65  20%   1.20/  1.80    1.495

Description     State       Warning RPM  Current RPM

--------------- ----------  -----------  -----------

FAN  0  EXHST 1    Enabled         1980         2327

FAN  1  EXHST 2    Enabled         1980         2327

FAN  2       PS    Enabled         3200         4115

FAN  3    PCI 1    Enabled         1980         3040

FAN  4    PCI 2    Enabled         1980         2743

                              Advisory   Critical   Fault      Current

Description       State       Temp       Temp       Temp       Temp

----------------- ----------  ---------  ---------  ---------  ---------

 0 INTERFACE 0       Enabled   31C/ 87F   48C/118F   55C/131F   16C/ 60F

 1 INTERFACE 1       Enabled   31C/ 87F   48C/118F   55C/131F   18C/ 64F

 2 INTERFACE 2       Enabled   31C/ 87F   48C/118F   55C/131F   20C/ 68F

 3 PCI RISER         Enabled   31C/ 87F   48C/118F   55C/131F   23C/ 73F

 4 ODYSSEY        

 5 NODE              Enabled   31C/ 87F   48C/118F   55C/131F   18C/ 64F

 6 BEDROCK           Enabled   31C/ 87F   48C/118F   55C/131F   14C/ 57F

001c02:

Environmental monitoring is enabled and running.

Description    State       Warning Limits     Fault Limits       Current

-------------- ----------  -----------------  -----------------  -------

          1.8V    Enabled  10%   1.62/  1.98  20%   1.44/  2.16    1.791

           12V 

        12V #2    Enabled  10%  10.80/ 13.20  20%   9.60/ 14.40   12.063

          3.3V    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.320

        12V IO    Enabled  10%  10.80/ 13.20  20%   9.60/ 14.40   12.063

        5V AUX    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    5.044

      3.3V AUX    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.268

    PCI 5V AUX    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    5.044

      PCI 3.3V    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.337

      PCI 2.5V    Enabled  10%   2.25/  2.75  20%   2.00/  3.00    2.509

        PCI 5V    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    4.940

  XIO 12V BIAS 

        XIO 5V 

      XIO 2.5V 

  XIO 3.3V AUX 

 IP53 3.3V AUX    Enabled  10%   2.97/  3.63  20%   2.64/  3.96    3.268

   IP53 5V AUX    Enabled  10%   4.50/  5.50  20%   4.00/  6.00    5.018

      IP53 12V    Enabled  10%  10.80/ 13.20  20%   9.60/ 14.40   12.000

     IP53 VCPU    Enabled  10%   1.13/  1.38  20%   1.00/  1.50    1.241

     IP53 SRAM    Enabled  10%   2.25/  2.75  20%   2.00/  3.00    2.457

     IP53 1.5V    Enabled  10%   1.35/  1.65  20%   1.20/  1.80    1.480

Description     State       Warning RPM  Current RPM

--------------- ----------  -----------  -----------

FAN  0  EXHST 1    Enabled         1980         2376

FAN  1  EXHST 2    Enabled         1980         2376

FAN  2       PS    Enabled         3200         4272

FAN  3    PCI 1    Enabled         1980         2636

FAN  4    PCI 2    Enabled         1980         2909

                              Advisory   Critical   Fault      Current

Description       State       Temp       Temp       Temp       Temp

----------------- ----------  ---------  ---------  ---------  ---------

 0 INTERFACE 0       Enabled   31C/ 87F   48C/118F   55C/131F   15C/ 59F

 1 INTERFACE 1       Enabled   31C/ 87F   48C/118F   55C/131F   16C/ 60F

 2 INTERFACE 2       Enabled   31C/ 87F   48C/118F   55C/131F   18C/ 64F

 3 PCI RISER         Enabled   31C/ 87F   48C/118F   55C/131F   20C/ 68F

 4 ODYSSEY        

 5 NODE              Enabled   31C/ 87F   48C/118F   55C/131F   18C/ 64F

 6 BEDROCK           Enabled   31C/ 87F   48C/118F   55C/131F   14C/ 57F

jwhat · 03-01-2022, 01:54 AM

Hi vvuk & co,

I can confirm that when you have two PSUs installed then you get both 12Vs reported in l1 env:

>> M200XXXX-001-L2>l1 env
>> 001c01:
>> Environmental monitoring is enabled and running.
>>
>> Description State Warning Limits Fault Limits Current
>> -------------- ---------- ----------------- ----------------- -------
>> 1.8V Enabled 10% 1.62/ 1.98 20% 1.44/ 2.16 1.777
>> 12V Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 12.063
>> 12V #2 Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 12.063
>> 3.3V Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.320
>> 12V IO Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 12.000
>> 5V AUX Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 5.096
>> 3.3V AUX Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.302
>> PCI 5V AUX Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 5.070
>> PCI 3.3V Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.285
>> PCI 2.5V Enabled 10% 2.25/ 2.75 20% 2.00/ 3.00 2.496
>> PCI 5V Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 4.940
>> XIO 12V BIAS Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 12.000
>> XIO 5V Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 4.914
>> XIO 2.5V Enabled 10% 2.25/ 2.75 20% 2.00/ 3.00 2.457
>> XIO 3.3V AUX Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.285
>> IP53 3.3V AUX Enabled 10% 2.97/ 3.63 20% 2.64/ 3.96 3.302
>> IP53 5V AUX Enabled 10% 4.50/ 5.50 20% 4.00/ 6.00 5.070
>> IP53 12V Enabled 10% 10.80/ 13.20 20% 9.60/ 14.40 12.000
>> IP53 VCPU Enabled 10% 1.13/ 1.38 20% 1.00/ 1.50 1.241
>> IP53 SRAM Enabled 10% 2.25/ 2.75 20% 2.00/ 3.00 2.470
>> IP53 1.5V Enabled 10% 1.35/ 1.65 20% 1.20/ 1.80 1.480
>>
>> Description State Warning RPM Current RPM
>> --------------- ---------- ----------- -----------
>> FAN 0 EXHST 1 Enabled 1980 2410
>> FAN 1 PS Enabled 3200 4891
>> FAN 2 PCI 1 Enabled 1980 2428
>> FAN 3 PCI 2 Enabled 1980 2636
>> FAN 4 ODY Enabled 1679 1997
>>
>> Advisory Critical Fault Current
>> Description State Temp Temp Temp Temp
>> ----------------- ---------- --------- --------- --------- ---------
>> 0 INTERFACE 0 Enabled [Autofan Control] 75C/167F 34C/ 93F
>> 1 INTERFACE 1 Enabled [Autofan Control] 75C/167F 35C/ 95F
>> 2 INTERFACE 2 Enabled [Autofan Control] 75C/167F 27C/ 80F
>> 3 PCI RISER Enabled [Autofan Control] 75C/167F 28C/ 82F
>> 4 ODYSSEY Enabled [Autofan Control] 75C/167F 28C/ 82F
>> 5 NODE Enabled [Autofan Control] 75C/167F 29C/ 84F
>> 6 BEDROCK Enabled [Autofan Control] 75C/167F 40C/104F
>>
>> Zone Temp Target Current Zone Fan Curr/Min
>> Zone Name State Sensors Average Average Index Fan %
>> --------- -------- ------------ -------- -------- --------- ---------
>> NODE Enabled 0,1,2,5,6 47C/116F 33C/ 91F 0 18%/ 18%
>> PS Enabled 0,1,2,5,6 47C/116F 33C/ 91F 1 55%/ 55%
>> PCI Enabled 3 45C/113F 28C/ 82F 2,3 55%/ 55%
>> ODY Enabled 4 48C/118F 28C/ 82F 4 55%/ 55%
>>

And here is l1 serial report:

>> M200XXXX-001-L2>serial all
>> 001c01:
>>
>> Data Location Value
>> ------------------------------ ------------ --------
>> Local System Serial Number NVRAM M200XXXX
>> Reference System Serial Number Attached L2 M200XXXX
>> Local Brick Serial Number EEPROM REF634
>> Reference Brick Serial Number NVRAM REF634
>>
>>
>> EEPROM Product Name Serial Part Number Rev T/W
>> ---------- -------------- ------------- -------------------- --- ------
>> INTERFACE 2U_INT_53 REF634 030_1809_006 D 000000
>> IO9 IO9 NZT098 030_1771_006 A 00
>> ODYSSEY ODY128B1_2 RCZ635 030_1909_008 B 00
>> RISER 2U_RISER NSG552 030_1808_006 C 00
>> NODE IP53_4CPU RAH315 030_2013_001 D 00
>> SNOWBALL no hardware detected
>> PS 1 DPS-500EBE XPD0710000209 060-0178-003 S4
>> PS 2 DPS-500EBE XPD0710000057 060-0178-003 S4
>>
>> EEPROM JEDEC-SPD Info Part Number Rev Speed SGI
>> ---------- ------------------------ ------------------ ---- ------ --------
>> DIMM 0 CE000000000000000CC70700 M3 46L2820DT2-CA0 2D 10.0 N/A
>> DIMM 2 CE000000000000000CE44500 M3 46L2820DT2-CA0 2D 10.0 N/A
>> DIMM 4 CE000000000000000C977E00 M3 46L2820DT2-CA0 2D 10.0 N/A
>> DIMM 6 CE000000000000000C8C7E00 M3 46L2820DT2-CA0 2D 10.0 N/A
>> DIMM 1 CE000000000000000C642F00 M3 46L2820DT2-CA0 2D 10.0 N/A
>> DIMM 3 CE000000000000000C917E00 M3 46L2820DT2-CA0 2D 10.0 N/A
>> DIMM 5 CE000000000000000C877E00 M3 46L2820DT2-CA0 2D 10.0 N/A
>> DIMM 7 CE000000000000000CFF4500 M3 46L2820DT2-CA0 2D 10.0 N/A
>>

Finally picture which shows 2 x DS1780 chips, directly inline with DALLAS socket & blue right hand positioning post (apologies in advance if this is super slow to load...) & another near part label:

[Image: o350-interface-board-01.jpg]

Add zoom in on the pair of chips:

[Image: IMG_4406.JPG]

EDIT: O350 has 3 x DS1780 chips on interface board.

Cheers from Oz,

jwhat/John

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