SUN T5220麵板告警故障處理
發布時間：2026-04-17 21:32:03
客戶反映：SUN T5220後麵板告警，及前麵板FAN指示燈告警。
1/登進串口控製台，默認進入“sc>”用戶終端(此終端為admin用戶所登陸,之前有人登陸。)
注：登進串口控製台，root用戶（初始密碼：changeme）,在無admin用戶情況下，創建admin用戶:
create /SP/users/admin
password:admin
-->set /SP/users/admin role=Administrator
-->set /SP/users/admin cli_mode=alom
創建完後，注銷
-->exit
2/既然在“sc>”提示符下，則先“help”
sc> help
Available commands
------------------
Power and Reset control commands:
powercycle [-y] [-f]
poweroff [-y] [-f]
poweron [-c] [FRU]
reset [-y] [-c] [-d] [-f] [-n]
Console commands:
break [-y] [-c]
console [-f]
consolehistory [-b lines|-e lines|-v] [-g lines] [boot|run]
Boot control commands:
bootmode [normal|reset_nvram|bootscript="string"|config="configname"]
setkeyswitch [-y] <normal|stby|diag|locked>
showkeyswitch
Locator LED commands:
setlocator [on|off]
showlocator
Status and Fault commands:
clearasrdb
clearfault <UUID>
disablecomponent [asr-key]
enablecomponent [asr-key]
removefru [-y] <FRU>
setfru -c [data]
showcomponent [asr-key]
showenvironment
showfaults [-v]
showfru [FRU]
showlogs [-b lines|-e lines|-v] [-g lines] [-p logtype[r|p]]
shownetwork [-v]
showplatform [-v]
showpower [-v]
ALOM Configuration commands:
setdate <[mmdd]HHMM | mmddHHMM[cc]yy][.SS]>
setsc [param] [value]
setupsc
showdate
showhost [version]
showsc [-v] [param]
ALOM Administrative commands:
flashupdate <-s IPaddr -f pathname> [-v] [-y] [-c]
help [command]
logout
password
resetsc [-y]
restartssh [-y]
setdefaults [-y]
ssh-keygen [-l|-r] <-t {rsa|dsa}>
showusers [-g lines]
useradd <username>
userclimode <username> <default|alom>
userdel [-y] <username>
userpassword <username>
userperm <username> [c][u][a][r][o][s]
usershow [username]
3/可見showfaults[-v] 是顯示當前係統故障。
sc> showfaults
Last POST Run: Fri Jul 20 05:12:03 2012
Post Status: Passed all devices
ID FRU Fault
1 /SYS/FANBD0/FM1 SP detected fault: TACH at /SYS/FANBD0/FM1/F1 has reached low non-recoverable threshold.
2 /SYS/FANBD0/FM1 SP detected fault: TACH at /SYS/FANBD0/FM1/F0 has reached low non-recoverable threshold.
3 /SYS/FANBD0/FM0 SP detected fault: TACH at /SYS/FANBD0/FM0/F0 has reached low non-recoverable threshold.
4 /SYS/FANBD0/FM0 SP detected fault: TACH at /SYS/FANBD0/FM0/F1 has reached low non-recoverable threshold.
5 /SYS/MB Host detected fault MSGID: PCIEX-8000-0A UUID: 31b27bc3-0aff-6aea-c326-d2459bb1ff51
4/定位故障，由上麵顯示，2塊風扇模塊FM0、FM1發現故障。其中“/SYS/MB” 為主板（預測性自我修複診斷出主板故障，而實際有故障的組件為FAN）
5/處理故障：
1 數據備份，建議客戶應用及業務數據備份
2 連接控製台，使用串口線連接機器進入串行控製台
3 關閉係統電源，在串行控製台執行命令: -> stop /SYS
4 佩戴防靜電護腕，確認已經佩戴防靜電護腕，並且防靜電護腕連接到機櫃上的未塗漆部分
5 斷開電源，斷開主電源和次電源
6 記錄線序，記錄設備線序，拔掉設備線
7 提起閂鎖，打開頂蓋門。
8 拆除有故障的風扇。
9 將取下的風扇放置在防靜電的材質表麵
10 從防靜電包裝中取出新風扇
11 其按照正確的方位安裝風扇。
12 合上頂蓋門
13 線序按照記錄，重新插回。
14 加電自檢，確認硬件是否就緒。
15 啟動係統，在控製台執行命令-> start /SYS
6/查看故障，進入root用戶，使用“show /SP/faultmgmt”命令查看故障。
-> show /SP/faultmgmt
/SP/faultmgmt
Targets:
shell
0 (/SYS/MB)
Properties:
Commands:
cd
show
7/可見在係統中故障已消失，但是麵板上的告警燈未消除，而且在root下查看故障報錯為“0 (/SYS/MB)”因上述已說明“(/SYS/MB)”為主板誤報錯（其真正故障的是FAN），所以此告警並非真正告警，所以消除。
8/消除告警指示燈“set /SYS/MB clear_fault_action=true”
-> set /SYS/MB clear_fault_action=true
Are you sure you want to clear /SYS/MB (y/n)? y
Set 'clear_fault_action' to 'true'
9/再次查看故障“show /SP/faultmgmt ”並未有主板告警，而且麵板告警燈也消除。
-> show /SP/faultmgmt
/SP/faultmgmt
Targets:
shell
Properties:
Commands:
cd
show
10/退出，OK！
-> exit
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