You have a S400 or S500 series ProxySG.

You are seeing Health Monitor Event Log messages which have 'No Input' for various hardware components.

Error messages similar but not limited to the following:

2017-06-27 20:03:45+09:00JST  "Health Monitor (CRITICAL): DIMM D3 temperature
is 'No Input'"  9 6F0102:1 Mailed notifier.cpp:112

2017-03-05 17:29:17-00:00UTC  "Health Monitor (CRITICAL): Memory EF I/O voltage
is 'No Input'"  9 6F0102:1  notifier.cpp:112

2017-03-01 05:26:44-00:00UTC  "Health Monitor (CRITICAL): CPU 2 temperature is
'No Input'"  9 6F0102:1  notifier.cpp:112

There is a problem in the firmware of the Baseboard Management Controller (BMC) which could cause it to report 'No Input' nonexistent hardware.

S500:  There is a updated BMC available in the 3.1.3.1 version of Hardware Diagnostics.

Please follow the upgrade instructions availabe at https://support.symantec.com/en_US/article.TECH246290.html 

S400: Currently, a fix is undeway but not available.

S200: The S200 appliances do not have this issue.

This is a cosmetic issue where 'No Input' messages can be generated for nonexistent hardware on the ProxySG.

To determine if you are encountering a real problem, verify first from a Sysinfo whether or not the component exists. If the component is not present and you are seeing 'No Input' message for that component, then you are seeing this BMC issue.

A temporary work-around is to perform a reboot of the ProxySG.

This article will be updated when a approximate timeline is available for the S400 appliances.