Security

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  • 1.  PEM3 fan failed

    Posted 02-15-2013 02:52

    Hi,

     

    In MX-960, we got an active alarm " PEM3 fan failed".

     

    After analysis, we confirmed that the fan residing in the PEM3 has been failed. PEM status are active and all the fan's in the tray are spinning at normal speed.

     

    My question is " whether entire PEM3 needs to be replaced  or just a fan which is inside the PEM? Based on your advice will proceed with RMA.

     

    Thank you in advance.

     

    Regards,

    Ahmed

     

     



  • 2.  RE: PEM3 fan failed

    Posted 02-15-2013 09:28

    Power supplies are shipped as assembled units and aren't meant to be user-serviced.

     

    That being said -- JTAC can provide a much better answer and problem resolution for you on this issue.

     

    (This also isn't the correct forum for this type of question, FYI for future questions...)



  • 3.  RE: PEM3 fan failed

    Posted 02-22-2013 19:46

    Like Keith said, the fan in the power supply isn't user serviceable, it's one big honkin' unit.  

     

    Regarding RMA, yes, the PEM should be RMAd.  The fan tray is there to cool the main chassis section (line cards, REs), not the power supplies, so heat from the power supply itself isn't being dealt with properly with the PEM's fan broken.  It may run for a while without the fan but its lifetime is unknown with hot spots building up inside it.

     

    -Chad