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E9000 Server V100R001 HMM Alarm Handling 19

This document describes E9000 server alarms in terms of the meaning, impact on the system, possible causes, and solutions.
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Swi: Failed to Access the I2C Device (Major, Mainboard)

Swi: Failed to Access the I2C Device (Major, Mainboard)


Alarm message:

Failed to access I2C arg1 on arg2. 

This alarm is generated when the access to the I2C device failed.

Alarm object: Mainboard


Alarm ID

Alarm Severity

Auto Clear








Board holding the I2C device, for example, EIUA or OIUA.


Location of the I2C device, for example, PCA9555 or EEPROM.

Impact on the System

The iBMC cannot obtain the I2C information in a timely manner and cannot generate an alarm if the board is faulty.

Possible Causes

The I2C link or device is faulty.


  1. Replace the component holding the I2C device. Then, check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 2.

  2. On the HMM WebUI, choose System Management > Information Collection, and collect logs.
  3. Contact Huawei technical support.
Updated: 2018-08-16

Document ID: EDOC1000015902

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