Some Netra T5220 Servers may experience low fan threshold warnings or FMA faults on boot after replacing the System Board.

Asset ID:	1-73-1021777.1
Update Date:	2010-08-19
Keywords:

Solution Type FAB (standard) Sure

Solution 1021777.1 : Some Netra T5220 Servers may experience low fan threshold warnings or FMA faults on boot after replacing the System Board.

Impact

Replacement spare boards may not contain the proper temperature thresholds for typical Netra operation. The system may have faults for Sun Fire fan boards which are not installed on Netra systems.

Sun Netra T5220 Servers as shipped from the Sun Factory are not impacted.

Contributing Factors

When Netra T5220 System Boards are installed into systems at the Sun Factory, they are reprogrammed and therefore are not affected.

The following Netra T5220 System Board serial numbers from weeks 37 and 39 of 2009 in Sun Service's spares inventory are suspect if no "GSAP 5091" label is found on the board;

540-7994-01

093902ADE3 093902ADC5 093902ADC3 093702903C 093902ADC1 0937029052
093902ADC0 093902ADD3 093902ADEB 0937029043 093902ADE8 0937029080
093702903A 0937029079 093902ADBF 093902ADED 093902ADCA 093902ADCE
093902ADC6 093902ADEC 0937029012 093902ADC7 093902ADD6 093902ADF0
093902ADD9 093902ADC8 093902ADD7 0937029051 093902ADC4 093902ADEF
093902ADD2 093902ADC2 093902ADD8 093902ADD5 093902ADE9 093902ADE4
093902ADD1 093902ADE1 093702904A 093902ADBB 0937029040 093902ADBC
093902ADEE 093902ADDA 0937029067 093902ADDB 093902ADBA 093902ADB9
093902ADDE 093902ADDF 093902ADC9 0937029054 093902ADCF 0937029044
093902ADDD 0937029057 093702903B 0937029055 093902ADD0 093702903E
093902ADE7 093902ADE6 0937029046 093702904E 0937029014 0937029078
0937029049 093702907E 0937029081 0937029058 093902ADBE 0937029047
0937029039 093902ADE5 093902ADCB 0937029037 0937029034 0937029048
093902ADE0 0937029050 093702904D 0937029042 093902ADEA 0937029038
0937029036 093702903F 0937029045 093702904B 0937029053 0937029056
093902ADBD 093702905A 093902ADCD 0937029035 093902ADCC 093702907B
0937029033 093702903D 0937029041 0937029059 093702904C 093902ADDC

540-7992-01

0937028FDD 093902AC9B 093902ACB9 0931026071 0930025FCE 0930025F18
0930025EA5 093902AD15 093902AD1B 093902AD16 093902ACB6 093902ACB4
0930025FD2 0937028FD7 093902AD11 093902ACBB 093102619B 092902523E
0932026A56 093902AD27 0937028FCE 0937028FB3 0937028FD4 0937028FDE
0937028FDF 0937028FE1 0937028FCD 0937028FB5 0937028FB4 0937028FDA
0937028FD6 0937028FBA 0937028FE2 0937028FDC 0937028FD8 0937028FD1
0937028FCC 0937028FBB 0937028FDB 0937028FE0 0937028FD9 0937028FD2
0937028FD0 0937028FCF 0937028FD5 0937028FD3 0937028FE7 0937029007
0937029005 0937028FE8 093702900C 0937029006 093702900F 0937029009
0937028FA8 0937029008 0937028FE4 0937029010 093702900E 0937028FE9
0937028FE5 093702900D 093702900A 0937028FE3 093702900B 0932026A3C
0937028FBC 0937028FE6 093902AD1D 093902AD24 093902AD14 093902AD1A
093902AD25 093902AD12 093902AD19 093902AD23 093902AC9C 093902ACBA
093902ACC6 093902AD20 093902ACC7 093902ACB7 093902ACB5 093902ACBD
093902ACC2 093902AD1C 093902ACB8 093902AD1F 093902AD18 093902AD10
093902ACBF 093902AD1E 093902AD17 093902ACC3 093902AC9A 093902ACC0
093902AD22 093902AD13 093902ACC4 093902AD26 093902ACC1

Symptoms

The Netra T5220 has lower fan speeds than the SunFire T5220. Therefore typical speeds on the Netra can cause low fan threshold warnings if the SunFire thresholds (found in unreprogrammed ES segment) are used.

In some cases the host may not power-on with the affected system board installed.

Sample output from prtdiag -v follows;

Fans (Speeds Revolution Per Minute):
Sensor                            Status          Speed   Warn    Low
/SYS/FT0/F0/TACH      WARNING     4600    5000    3000
/SYS/FT0/F1/TACH      WARNING     4800    5000    3000
/SYS/FT0/F2/TACH      WARNING     4600    5000    3000
/SYS/FT1/F0/TACH      OK               5600    5000    3000
/SYS/FT1/F1/TACH      OK               5600    5000    3000
/SYS/FT2/F0/TACH      OK         6400    5000    3000

The warning speeds above should have been 2800 RPM for the top three fans and 4000 RPM for the lower ones.

Additionally, FMA detects the following faults on boot since the faulted components are not found in the Sun Fire:

sc> showfaults
ID FRU                       Fault
   1 /SYS/FANBD1     SP detected fault: Required board at FANBD1 is not present.
   2 /SYS/SASBP      SP detected fault: Required board at SASBP is not present.
   3 /SYS/MB         SP detected fault: unable to determine platform id

Root Cause

A Sun supply partner used SunFire T5220 systemboards which contained incorrect FRUID and ES segment data for the Netra in their last shipment to Sun. These systemboards must be reloaded with the proper FRUID and ES segment data at the new vendor. The responsible vendor for this issue no longer makes these boards.

Services spares being purged and reworked via GSAP 5091 as of 21-December-2009.

Corrective Action

Workaround:

No workaround available - see Resolution section.

Resolution:

If an affected system board (either Sun P/N 540-7992-01 or 540-7994-01) is obtained from spares, order another replacement spare of the same part number. In addition, Sun P/N 542-0228-01 or 542-0230-01 are also substitutable replacements and not affected by this issue.

Return the affected board as DOA, and state on the Defective Material Tag that the returned board needs to be reworked per GSAP 5091. Reworked 540-7992-01 and 540-7994-01 boards will contain a GSAP 5091 rework sticker.

Identification of Affected Parts (how to):

Visually inspect suspect boards against the list of affected serial numbers in the Contributing Factors section above.

Boards with affected Serial Numbers that also contain a "GSAP 5091" label have been reworked and are not impacted.

References:

    BugID: 6910342
    GSAP: 5091
    WW Stop Ship: P001-20702.A2
    Radiance ID: 71985970, 72091632

For information about FAB documents, its release processes, implementation strategies and billing information, go to the following URL:

http://tns.central/fab

For Sun Authorized Service Providers go to:

http://tns.central/SPE/fab/

In addition to the above you may email:

FAB-Manager@sun.com

Internal Contributor/submitter
Donald.Drygalski@Sun.COM

Internal Eng Responsible Engineer
Jim.Ye@Sun.COM Responsible Manager: Art.Weigel@Sun.COM

Internal Services Knowledge Engineer
Joe.Davis@Sun.COM

Internal Eng Business Unit Group
SSG NSN (Netra Systems and Networking)

Internal Sun Alert & FAB Admin Info
11-Jan-2010: Completed draft and sent to Extended Review.
14-Jan-2010: Resolved all feedback - sending to Publish.

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