客户反映：SUN T5220后面板告警，及前面板FAN指示灯告警。
1/登进串口控制台，默认进入“sc>”用户终端(此终端为admin用户所登陆,之前有人登陆。)
注：登进串口控制台，root用户(初始密码：changeme),在无admin用户情况下，创建admin用户:
create /SP/users/admin
password:admin
-->set /SP/users/admin role=Administrator
-->set /SP/users/admin cli_mode=alom
创建完后，注销
-->exit
2/既然在“sc>”提示符下，则先“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=&
