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MacBook Pro & Air błąd 4SNS/1/40000000: IC0R-10.996 oraz 4SNS/1/40000000: IC0R-6.360

Discussion in 'Casie Studies' started by Administrator, Mar 12, 2018.

  1. Administrator

    Administrator Administrator Staff Member

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    MacBook Pro & Air błąd 4SNS/1/40000000: IC0R-10.996 oraz 4SNS/1/40000000: IC0R-6.360

    errors: 4SNS / 1/40000000: IC0R-10996 and 4SNS / 1/40000000: IC0R-6.360 . These errors occur most frequently after pouring liquid, in the following models:
    - MacBook Pro A1398, A1425, A1502 (Retina)
    - MacBook Air A1465, A1466
    - MacBook Pro A1278, A1286, A1297 (Unibody)
    - Other


    Symptoms:

    - very slow system work operating
    - incorrect (often abrupt or delayed) action trackpad
    - the kernel task 100% and more in the Monitor activity (permanent, full CPU load)
    - error 4SNS / 1/40000000: IC0R-10996 in the test AHT (Apple Hardware Test - invoked by holding down Alt + D when the computer starts).

    Cause:

    This error is most often caused by the action of liquid or moisture in the computer, less damage to the electronic element. This particular error is related to the current measurement circuit, drawn by converters, power CPU. The current is measured by the shunt resistor (in our case R5400) and the voltage drop on the circuit amplified by U5400. In the case where the voltage drop between the input of U5400 is out of range, the output of U5400 goes high, indicating the SMC message in the circuit current measurement converters, power supply CPU. This results in an error 4SNS / 1/40000000: IC0R-10996 (out of range). Fig. 1 - circuit current measurement converters, power CPU

    3.jpg

    Solution:

    In this case, the problem is mostly caused by the gap between the shunt resistor and the inverting input (no. 5) of the U5400. In my case it was a corroded conduit, indicated by the arrow in the picture below:

    4.png
     

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