一、故障现象
XX联通SUN M500亮故障灯，检查发现MBU_B状态degraded.
XSCF> showstatus
* MBU_BStatus:Degraded;
XSCF> showhardconf -M
SPARC Enterprise M5000;
+Serial:BEF0908DB0; Operator_Panel_Switch:Service;
+Power_Supply_System:Single; SCF-ID:XSCF#0;
+System_Power:Off; System_Phase:Cabinet Power Off;
Domain#0Domain_Status:Powered Off;
* MBU_BStatus:Degraded; Ver:0201h; Serial:BE0908107B ;
+FRU-Part-Number:CF00541-0478 07 /541-0478-07 ;
+ Memory_Size:16 GB;
CPUM
#0-CHIP#
0Status:Normal; Ver:0401h; Serial:PP090405A0 ;
+ FRU-Part-Number:CA06761-D202E0 /375-3568-05 ;
+ Freq:2.400 GHz;Type:32;
二、处理过程
根据xscf的版本、序列号申请 service密码
XSCF> enableservice
Service Password:
**** **** **** **** *******
**** **** **** *** ********
**** **** **** **** ********
*** **** **** **** ******
*** *** ** *** *** ***
Mode password is: LONGMACE ROOT
XSCF> service
Mode password: **** ****
Invalid mode password.Please try again.
Mode password: **** ********
service>
service> showstatus
* MBU_BStatus:Degraded;
service> fmadm faulty
STATE RESOURCE /UUID
------------------------------------------------------------------------------
faultedhc:///chassis=0/cmu=1/mbc=1
------------------------------------------------------------------------------
service> clearfaultMBU_B
clearfault: Fault cannotbe cleared for this FRU.
FRU will be marked toclear faulton next circuit breaker off and on.
Continue? [y|n]: y
Fault will be clearedafter circuit breaker off and on
service> exit
exit
Quit
XSCF> disablemodes
XSCF> poweroff -a
DomainIDs to poweroff:00
Continue? [y|n] :y
00 :Not powering off:The domain is already powered off.
XSCF>
断电加电后检查无故障，最大化自检三遍无问题后故障消除
XSCF> showstatus
No failures found inSystem Initialization.
XSCF>
XSCF>