HT201257: Using Apple Hardware Test
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Q: I run the Apple Hardware Test and received an error such as 4SNS/ 1 /40000000: ICOR - 21.992. What does it mean?
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Sep 22, 2015 9:08 PMby leroydouglas,4SNS: System sensor
indicating a current problem on the central processor
Take it in
Genius reservation http://www.apple.com/retail/geniusbar/
on-line https://getsupport.apple.com/GetproductgroupList.action
check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do
