Related Diagnostic Procedures

8-3

Related Diagnostic When troubleshooting problems, you may have to perform minor

Proceduresprocedures to help correct the problem. These procedures are described below. For more complex operations on the CoreBuilder 7000 family ATM switch, contact 3Com Technical Support.

Table 8-3Diagnostic Procedures

Procedure

Action

 

 

Checking fan

In case of system overheating, check that the power supply fan and the fans in the fan tray

operations

are operating. To check for fan movement in the CoreBuilder 7000 family ATM switch’s

 

fan tray, pull a few modules from the chassis to view the fans on the left side of the

 

system.

 

 

Cleaning dirty fiber

Fiber optic transceivers are sensitive optical devices that need to be handled carefully. If dirt

optic cables*

collects on the fiber optic lens, you may notice that the LED for an ATM port link status

 

does not light. You may also notice degraded performance of that port, indicated by an

 

increase in the physical layer statistics count for that port.

 

To prevent dust from collecting on the fiber optic lens, keep the dust covers on the ports at

 

all times when they are not in use. To clean a fiber optic lens, follow the procedure below:

1Remove any accumulated dust or debris from the port or connector by blowing off all surfaces with a canned air duster.

2Compressed gas is recommended, such as Chemtronics’ Ultrajet ® or the Triangle Tool Group’s Liqui-Too!™ Dust-A-Way. Do not use commercial compressed air or “house air” because of the risk of oil contamination.

3Reconnect the cable to the port to see if the dusting corrected the problem.

4If the LED still does not appear, or if it lights yellow, continue with steps 5 and 6.

5Gently wipe the ports with a lint-free, non-abrasive, non-adhesive swab. Microswabs™ by Texwipe™ are recommended.

6Gently wipe the connectors with a lint-free, non-abrasive wipe or pad. Texwipe™ pads are recommended.

*See safety precautions in next section.

Safety Precautions for Fiber Optics Connectors

Avoid touching all surfaces after cleaning the connectors, and keep all unused ports covered.

Vermeiden Sie das Berühren aller Oberflächen nach dem Säubern der

Kontakte und verdecken Sie alle nicht benutzten Öffnungen.

Ne toucher aucune surface après le nettoyage des connecteurs et garder les pièces inutilisées couvertes.

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3Com DUA3700-0BAA04 manual Safety Precautions for Fiber Optics Connectors, Procedure Action

DUA3700-0BAA04 specifications

The 3Com DUA3700-0BAA04 is an advanced multi-service access device designed to cater to the needs of enterprises that require versatile connectivity solutions. As businesses evolve and expand, the demand for efficient, robust communication networks grows. The DUA3700-0BAA04 meets this need by providing a flexible architecture capable of supporting various types of network services, including data, voice, and video over IP.

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Management and troubleshooting are simplified with a user-friendly interface that provides clear diagnostics and monitoring capabilities. This allows IT teams to maintain the network effectively and respond quickly to any issues that arise.

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