p650电源故障

p650主机，前面板感叹号亮黄色，系统内有告警
mail信息（部分）：
A loss of redundancy on input power was detected.
Check for the following:
  1. Loose or disconnected power source connections.
  2. Loss of the power source.
  3. For multiple enclosure systems, loose or
     disconnected power and/or signal connections
     between enclosures.
Supporting data:
        Ref. Code:      10111520
Error log information:
          Date: Tue Jun  5 06:19:58 BEIJING 2012
          Sequence number: 118634
          Label: EPOW_SUS_CHRP

errpt信息（部分）：
Description
ENVIRONMENTAL PROBLEM
Probable Causes
Power Turned Off Without a Shutdown
POWER OR FAN COMPONENT
        Recommended Actions
        RUN SYSTEM DIAGNOSTICS.
        PERFORM PROBLEM DETERMINATION PROCEDURES
Detail Data
POWER STATUS REGISTER
0000 0002

ps2电源，3个指示灯，只有直流灯（中间）闪烁，其他灯不亮，于是更换了电源，现在从指示灯来看正常了（交流和直流常亮），但是系统内的errpt、crontab告警清除掉后又再次出现，反复试了几次都不行

现在同事建议我在asm里把启动模式改为慢启动测试一下，大家还有没有什么好方法测试这个电源？