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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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The W_R_FAIL is an alarm indicating that reading and writing the chip register fail.


Alarm Severity Alarm Type


Equipment alarm



Impact on the System

When the W_R_FAIL alarm occurs, writing and reading the chip register fail. This will affect the functions of the board.

Possible Causes

The possible cause of the W_R_FAIL alarm is as follows:

  • The board is faulty.


  1. Perform a cold reset on, or remove and insert the board that reports the W_R_FAIL alarm.
  2. After the board is online again, view alarms on the U2000 to check whether the W_R_FAIL alarm is cleared.

    If... Then...
    If this alarm is cleared The fault is removed. End the alarm handling.
    If this alarm persists Proceed to the next step.

  3. If the board hardware is faulty, replace the relevant board.

    Performing a hard reset on the board or replacing the board will interrupt services. This operation is of risk.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

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