Troubleshooting; Troubleshooting Power System; Troubleshooting Configuration System - 3Com 6000 Series Installation Manual

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7

Troubleshooting

Power System
Fault: POWER RUN LED
is OFF or blinks.
Troubleshooting
Configuration System
Fault: "nothing being
displayed on the
terminal"
Fault: "displaying
illegible characters on
the terminal"
T
ROUBLESHOOTING
Please check:
If the power switch of the Router is turned on.
If the power supply switch is turned on.
If the power cord of the Router is properly connected.
If the power supply meets the requirement of the Router. Steady on means the
input voltage is normal (85-264V), off means the input voltage is abnormal.
After the Power-On Self-Test (POST) of the Router, if the system operates normally,
the start-up information should be displayed on the console terminal; if the
configuration system has some fault, the terminal may display nothing or only
illegible characters.
After the Power-On Self-Test (POST) of the Router, the terminal does not display
any information.
Please check:
If the power system is normal.
If the console cable is connected correctly.
If there's nothing wrong after all the items above have been checked, it is likely
that there is something wrong with the console cable or the terminal (e.g., the
HyperTerminal) parameters. Please check the cable or the parameters.
After the Power-On Self-Test (POST) of the Router, the console terminal displays
illegible characters.
Please check the following:
Baud: 9600
Data bits: 8
Stop bit: 1
Parity: None
Flow control: None
Terminal emulation: VT100

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