6-2
Missing Boot ROM Password
Please contact your agent.
Power System Failure
You can check whether the power system of the switch fails by viewing the POWER indicator on the
front panel. If it is in normal operation, the POWER indicator should stay on. Otherwise, please check
that:
z The switch power cable is correctly connected.
z The power input to the switch matches the requirement as labeled on the switch.
Configuration System Failure
After the switch is powered on and the system is normal, the booting information will be displayed on the
configuration terminal. If the configuration system has any faults, there will not be any screen display at
the configuration terminal or the displayed characters will be totally illegible.
Troubleshooting when there is no terminal display
If there is no output information after the configuration is powered on, please check that:
z The power supply is normal
z The console cable is properly connected
If no problems are found after the above-mentioned items have been checked, the cause may lie in the
console cable or the settings of the terminal (such as HyperTerminal) parameters. Please perform the
corresponding check.
Troubleshooting when the terminal display is illegible
If there is illegible display at the configuration terminal, the cause might lie in the parameter setting error
at the terminal (such as HyperTerminal). Please confirm the following terminal parameter (such as
HyperTerminal) settings:
z Bits per second: 9600
z Data bits: 8
z Parity: None
z Stop bits: 1
z Flow control: None
z Emulation: VT100.
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