Sun Fire[TM] 12K/15K/20K/25K: System Controller fails POST - CUR values "has been identified as being out of sharing range" in Platform Messages.

Asset ID:	1-72-1575303.1
Update Date:	2018-05-17
Keywords:

Solution Type Problem Resolution Sure

Solution 1575303.1 : Sun Fire[TM] 12K/15K/20K/25K: System Controller fails POST - CUR values "has been identified as being out of sharing range" in Platform Messages.

Applies to:

Sun Fire 12K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire E20K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire E25K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire 15K Server - Version Not Applicable to Not Applicable [Release N/A]
Oracle Solaris on SPARC (64-bit)

Symptoms

System Controller fails post with messages simlar to the following:

CLOCK SET TO 75.0 MHZ
CLOCK FREQUENCY MEASURES 74.980 MHZ
WARNING: I2C EEPROM not initialized to 806 standard addr = 0x00001f3b
WARNING: SEEPROM not initialized 00000000
negative reading (BOGUS)
FAIL: DC/DC 0 Temp Sample 0 out of bounds 0x0000000f (nom 0x000000b8 delta 0x00000020)
SUBTEST: I2C Local SC Power Mezz A2D 0 Test FAILED
TEST 3: SC I2C Chain 1 Tests FAILED
PHASE 4: SBBC I2C Testing FAILED
Extended POST Failed.
Exiting to CORE ...

In the /var/opt/SUNWSMS/adm/platform/messages file, we see similar errors:

Aug 7 17:44:26 2013 workingSC esmd[27959]: [1921 12093513465321563 ERR DetectorV.cc 471] 5.0CUR0, located on SC0, has been identified as being out of sharing range. SC0 requires attention. Check all hardware for the cause.

 Failed SC can be detected either as BAD or POWERED-OFF in showenvironment output:

LOCATION SENSOR VALUE UNIT AGE STATUS
---------- ------------ ----- ---- ------ ------
SC at SC0 -- -- -- -- BAD

SC at SC0 3.3 V_PS0 12.45 A 25.4 sec BAD
SC at SC0 3.3 V_PS1 2.05 A 25.4 sec BAD
SC at SC0 5.0 V_PS0 8.17 A 25.4 sec BAD
SC at SC0 5.0 V_PS1 1.70 A 25.4 sec BAD

Cause

Each SC has 2 PS (0 and 1) that are supposed to share the load.

This means that around half of the power has to be given by PS0 and half from PS1 for both 3.3 and 5.0 CUR values.

Unbalanced load means there is a failure which the good PS is trying to provide for.

Solution

Replace the reported System Controller Board:

https://support.oracle.com/handbook_private/Devices/System_Board/SYSBD_SunFire15K_SysCtlr.html

501-5121 [F] System Controller Board --->Non RoHS
501-7736 [F] System Controller Board FRU ---> RoHS (Systems POST July 2006)

Attachments

This solution has no attachment