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HP Hub-8TXE Installation and Reference Guide
A-2 Troubleshooting
System Diagnostics
Power and Cooling Problems
If the Power indicator does not turn on when the power cord is plugged in, you
may have a problem with the power outlet, power cord, or internal power
supply as explained in the previous section. However, if the unit powers off
after running for a while, check for loose power connections, power losses or
surges at the power outlet, and verify that the fan on the back of the unit is
unobstructed and running prior to shutdown. If you still cannot isolate the
problem, then the internal power supply may be defective. In this case, contact
your HP-authorized dealer or reseller for assistance.
Installation
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (e.g., the power cord or network
cabling), test them in an alternate environment where you are sure that all the
other components are functioning properly.
Cabling
1. Verify that the cabling type is correct. Be sure all cable connectors are
securely seated in the required ports. Use 100
W Category 5 straight-through
cable for all standard twisted-pair connections.
2. Make sure all devices are connected to the network. Equipment may have
been unintentionally disconnected from the network.
3. When cascading two devices using RJ-45 ports at both ends of the cable
(i.e., not the MDI port), make sure a crossover cable is used. Crossover
cable should only be used if a cascade port is not available.
- Package Contents 3
- Quick Installation 4
- About this Guide 6
- Contents 7
- List of Figures 9
- List of Tables 9
- Chapter 1: Product Overview 10
- Basic Features 11
- Product Overview 1-3 12
- Installing the System 2-1 13
- Connecting the Hub System 14
- Installing the System 2-3 15
- Providing Power to the Hub 16
- Verifying Port Status 16
- Verifying System Operation 17
- Stand-Alone 18
- Connecting Multiple Hubs 19
- Front Panel 20
- Color: Green 21
- Function: Power indicator 21
- Hardware Reference 4-3 22
- Port Status Display 23
- RJ-45 Fast Ethernet Ports 24
- Rear Panel 25
- Appendix A: Troubleshooting 26
- System Diagnostics 27
- Physical Configuration 28
- Hub Integrity 28
- Appendix B: 29
- Appendix D: 31
- Safety Information 32
- Hinweise zur Sicherheit 34
- Safety Information (Japanese) 37
- Regulatory Statements 38
- European Community 39
- Appendix E: 40
- Product Support Services 40
- Glossary 42
- Shielded Twisted-Pair (STP) 44
- Star Topology 44
- Unshielded Twisted-Pair (UTP) 44
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