8-2CHAPTER 8: TROUBLESHOOTING

Table 8-1Recommended Action for Common Problems (continued)

 

 

Problem

Recommended Action

 

 

Interface Card fails

If one of the interface cards fails, use the Initialize Interface (INI) option in the System (SYS)

 

menu, Interface (IFC) option to reinitialize the interface. If this fails, you can try to restart

 

the whole unit again. If neither of these actions correct the problem you should contact a

 

3Com service person.

 

When handling modules, always use a wrist strap that is connected to a proper ground.

 

This prevents the module from being damaged by electrostatic discharge.

 

 

Fans do not rotate

If the fans do not work when the unit is powered up, the fan tray may not be inserted

 

properly. Unplug the power cord and reinsert the fan tray properly against the enclosure.

 

 

Power Supply

This section discusses common problems related to the CoreBuilder 7000

Troubleshooting

family ATM switch power supply.

Table 8-2Problems Related to the Power Supply

 

 

 

 

 

Problem

Possible Cause

Recommended Action

 

 

 

 

CoreBuilder 7000 family

The CoreBuilder 7000

1

Check that the power cord is firmly plugged into both

ATM switch not receiving

family ATM switch is

 

the system and the building’s power outlet.

power

not connected

2

Check that the power cable meets the requirements

 

to/receiving external

 

 

described in the Safety Rules section of Chapter 3.

 

power.

 

 

3

Restart the system by replugging the power cord.

 

The power supply

 

4

If the problem persists, consider replacing the power

 

malfunctioned.

 

A fuse is blown.

 

cable, replacing the power supply and checking the

 

 

power supply fuse; the fuse resides within the power

 

 

 

 

 

 

supply. You have to extract the power supply in order

 

 

 

to check and replace a fuse.

 

 

5

If the system is still not operating, contact 3Com

 

 

 

Technical Support or your service person.

 

 

 

 

Circuit breaker has tripped

External wiring

1

Unplug the power cord of the system.

 

￿problem

2

Verify that the system is properly connected to AC

 

Power supply failure

 

power with the correct voltage. See Appendix A:

 

 

 

CoreBuilder 7000 Family ATM Switch Specifications.

 

 

3

If the power connection is the problem, replace the

 

 

 

cable. If the problem remains, contact 3Com Technical

 

 

 

Support.

 

 

 

 

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3Com DUA3700-0BAA04 manual Family ATM switch power supply, Problem Possible Cause Recommended Action

DUA3700-0BAA04 specifications

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