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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
POWER_FAIL

POWER_FAIL

Description

The POWER_FAIL alarm indicates a power failure on an NE.

Attribute

Alarm Severity Alarm Type

Major

Equipment alarm

Parameters

When you view an alarm on the network management system, select the alarm. In the Alarm Details field display the related parameters of the alarm. The alarm parameters are in the following format: Alarm Parameters (hex): parameter1 parameter2...parameterN. For details about each parameter, refer to the following table.

Name Meaning
TNF1APIU
  • 0x55 0x01: The 1.0 V power supply is overvoltage.
  • 0x4f 0x01: The 1.8 V power supply is overvoltage.
  • 0x53 0x01: The 3.3 V power supply is overvoltage.
  • 0x51 0x01: The 12 V power supply is overvoltage.
  • 0x56 0x01: The 1.0 V power supply is undervoltage.
  • 0x50 0x01: The 1.8 V power supply is undervoltage.
  • 0x54 0x01: The 3.3 V power supply is undervoltage.
  • 0x52 0x01: The 12 V power supply is undervoltage.
  • 0x67 0x01: The 1.2 V power supply is overvoltage.
  • 0x4d 0x01: The 1.26 V power supply is overvoltage.
  • 0x5b 0x01: The 2.5 V power supply is overvoltage.
  • 0x5d 0x01: The 5.0 V power supply is overvoltage.
  • 0x68 0x01: The 1.2 V power supply is undervoltage.
  • 0x4e 0x01: The 1.26 V power supply is undervoltage.
  • 0x5c 0x01: The 2.5 V power supply is undervoltage.
  • 0x5e 0x01: The 5.0 V power supply is undervoltage.
TNF2OBU
  • 0x41: The 3.3 V active power supply is overvoltage.
  • 0x42: The 3.3 V active power supply is undervoltage.
TNF5APIU
  • 0x55: The input voltage of power supply 1 of the APIU is abnormal.
  • 0x57: The output voltage of power supply 1 of the APIU is abnormal.
  • 0x58: The output voltage of power supply 2 of the APIU is abnormal.
  • 0x59: APIU overtemperature protection is triggered.
  • 0x60: The APIU locks out due to output overvoltage.
  • 0x61: The APIU encounters slight overtemperature.
TNF5PIU
  • 0x50: The 48 V active power supply is undervoltage.

TNH1CSHD (SCC)

TNM1PCX (SCC)

  • 0x6a 0x01: The 1.0 V power supply is undervoltage.
  • 0x69 0x01: The 1.0 V power supply is overvoltage.
  • 0x4c 0x01: The 1.2 V power supply is undervoltage.
  • 0x4b 0x01: The 1.2 V power supply is overvoltage.
  • 0x44 0x01: The 1.8 V power supply is undervoltage.
  • 0x43 0x01: The 1.8 V power supply is overvoltage.
  • 0x25 0x01: The 3.3 V combined power supply is undervoltage.
  • 0x24 0x01: The 3.3 V combined power supply is overvoltage.
  • 0x42 0x01: The 3.3 V power supply is undervoltage.
  • 0x41 0x01: The 3.3 V power supply is overvoltage.
  • 0x13 0x01: The 12 V power supply is undervoltage.
  • 0x12 0x01: The 12 V power supply is overvoltage.
TNW1UCX (SCC), TNW1UCXE (SCC)
  • 0x05: The battery on the system control board is dead.
  • 0x50: The 48 V active power supply is undervoltage.
  • 0x52: The 48 V standby power supply is undervoltage.

Impact on the System

The power voltage of the board is low. As a result, switching of active/standby power supplies occurs, or a cold reset occurs and causes service interruptions.

Possible Causes

Possible cause of the POWER_FAIL alarm is as follows:

  • The switch on the standby power board is turned off.
  • The power module is faulty.
  • The power module is aged.

Procedure

  1. Check whether the switch on the standby power board is turned off.

    If... Then...

    The switch on the standby power board is turned off

    Turn on the switch. Check whether the alarm is cleared. If the alarm persists, go to the next step.

    The switch on the standby power board is turned on

    Go to the next step.

  2. Check whether the power module on the NE is faulty or aged.

    If... Then...

    The power module is faulty or aged

    Replace the power board. Check whether the alarm is cleared. If the alarm persists, go to the next step.

    The power module works normally

    Go to the next step.

  3. Replace the NE subrack and the alarm is cleared automatically.

    Replacing the power module or the subrack of the NE requires power—off of the NE. This operation will interrupt the services on the NE. Hence, this operation is of risk.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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