Unable to write SSC050 device Failures During Boot/Shutdown (OBDIAG Failures)

Asset ID:	1-72-1377558.1
Update Date:	2011-12-27
Keywords:

Solution Type Problem Resolution Sure

Solution 1377558.1 : Unable to write SSC050 device Failures During Boot/Shutdown (OBDIAG Failures)

Applies to:

Sun Fire V890 Server - Version: Not Applicable and later   [Release: N/A and later ]
Sun Fire V880 Server - Version: Not Applicable and later    [Release: N/A and later]
Sun Fire V890 Server - Version: Not Applicable and later    [Release: N/A and later]
Information in this document applies to any platform.

Symptoms

=== ODM Issue Clarification ===

The system is getting errors during boot stating it's not able to read the ID from the FCAL disk backplane 0. OpenBoot Diagnostics failed and Unable to write SSC050 device.

Cause

=== ODM Cause Determination ===

Prtdiag will not report status of components properly.

System will fail to boot with error messages.

OBDIAG will fail components such as the I2C ebus component.

=== ODM Cause Justification ===

prtdiag example:

========================= Environmental Status =========================

failed in fill_device_array_from_id for PSVC_KEYSWITCH

Property not found

failed in fill_device_array_from_id for FSP_LED

Property not found

failed in fill_device_array_from_id for DISK

Property not found

failed in fill_device_array_from_id for FAN

Property not found

Power Supplies:

Boot messages:

ERROR: Unable to write SSC050 device.
ERROR: Can't access LTC1427-50 device

ERROR: /pci@9,700000/ebus@1/serial@1,400000: Last Trap: Fast Data Access MMU Miss

ERROR: /pci@9,700000/ebus@1/serial@1,400000: Can't access SSC050 device

ERROR: /pci@9,700000/ebus@1/i2c@1,30: Couldn't read ID from FCAL Disk Backplane 0

ERROR: Can't open Disk Backplane 0 FRUPROM

ERROR: /pci@9,700000/ebus@1/i2c@1,30: Couldn't read ID from FCAL Disk Backplane 0

ERROR: /pci@9,700000/ebus@1/i2c@1,30: Cannot initialize SSC050 fan speed counter at bus 5, addr 80 port P2.5

ERROR: /pci@9,700000/ebus@1/i2c@1,30: Cannot initialize SSC050 fan speed counter at bus 5, addr 80 port P2.7

ERROR: /pci@9,700000/ebus@1/i2c@1,30: Cannot initialize SSC050 fan speed counter at bus 5, addr 82 port P2.5

Error 7

OBDIAG failures:

Running diagnostic script obdiag/normal

Testing /pci@8,600000/network@1
Testing /pci@8,600000/SUNW,qlc@2
Testing /pci@9,700000/ebus@1/i2c@1,2e
Testing /pci@9,700000/ebus@1/i2c@1,30 <------------------- Ebus I2C controller located on the IO board

ERROR : Read from MAX1617 read external temp register failed.
DEVICE : /pci@9,700000/ebus@1/i2c@1,30/temperature@0,32
SUBTEST : selftest
CALLERS : catch
MACHINE : Sun Fire 880
SERIAL# : 54830358
DATE : 11/15/2011 16:42:26 GMT
CONTROLS: diag-level=min test-args=

Error: /pci@9,700000/ebus@1/i2c@1,30 selftest failed, return code = 1
ERROR: /pci@9,700000/ebus@1/i2c@1,30: Couldn't read ID from FCAL Disk Backplane 0

ERROR: Can't open Disk Backplane 0 FRUPROM

ERROR: OpenBoot Diagnostics failed.

ERROR: OpenBoot Diagnostics failed
WARNING: Device /pci@9,700000/ebus@1/i2c@1,30 already marked with 'status' == fail
Resetting ...

Solution

=== ODM Solution / Action Plan ===

Field Engineer will need to replace the IO board. PN 501-6524 or PN 501-5142

References

<NOTE:1008863.1> - Prtdiag shows limited information or no information
<NOTE:1018834.1> - Sun Fire[TM] Server: Advanced DPM(Daktari Personality Module) Troubleshooting Techniques
<NOTE:1334071.1> - Sf V890:Server Is Not Booting (OBdiag failures)
<NOTE:1383378.1> - Sun Fire[TM] Servers (V280R, V480, V490, V880, V890):OBDiag Troubleshooting

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