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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).
PUMP_COOL_EXC

PUMP_COOL_EXC

Description

This alarm indicates that the cooling current of the pump laser exceeds the threshold. This alarm is generated when the laser cooling current is higher than the upper threshold or lower than the lower threshold.

Attribute

Alarm Severity Alarm Type

Critical

Equipment alarm

Parameters

None

Impact on the System

When this alarm is reported, the laser ages sharply and the performance of output signals degrades.

Possible Causes

  • Cause 1: The ambient temperature is excessively high or low.

  • Cause 2: The pump laser temperature is excessively high or low.

  • Cause 3: The board that reports this alarm is faulty.

Procedure

  • Cause 1: The ambient temperature is excessively high or low.
    1. Check the ambient temperature inside the telecommunications room, and heat dissipation through fans. For details, see TEMP_OVER to rectify the fault.
    2. Check whether this alarm is cleared. If the alarm persists, see the alarm handling procedure for causes 2 and 3.
  • Causes 2: The pump laser temperature is excessively high or low/Cause 3: The board that reports this alarm is faulty.
    1. If the alarm persists, replace the faulty board.
    2. Check whether this alarm is cleared. If the alarm persists, contact Huawei for help.

Related Information

None

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Updated: 2019-01-21

Document ID: EDOC1100020975

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