Installation ManualH3C S5100-SI/EI Series Ethernet Switches Chapter 6 Maintenance and Troubleshooting6-2Select 7, and then restart the switch. After the switch is restarted, the configuration filewill be skipped.6.2.2 Missing Boot ROM PasswordPlease contact your switch dealer.6.3 Power Supply FailureYou can check whether the power system of the switch fails by viewing the PWR LEDon the front panel. When the power supply system functions normally, the PWR LEDshould stay on. Otherwise, please check whetherz The switch power cord is properly connected.z The power input to the switch matches the requirement as labeled on the switch.6.4 Configuration System FailureAfter the switch is powered on and the system is normal, the booting information will bedisplayed on the configuration terminal. If the configuration system has any faults, therewill not be any screen display at the configuration terminal or the displayed characterswill be totally illegible.I. Troubleshooting when there is no terminal displayIf there is no output information after the configuration is powered on, please checkwhether:z The power supply is normalz The console cable is properly connectedIf no problems are found after the above-mentioned items have been checked, thecause may lie in the console cable or the settings of the terminal (such as hyperterminal) parameters. Please perform the corresponding check.II. Troubleshooting when the terminal display is illegibleIf there is illegible display at the configuration terminal, the cause might lie in theparameter setting error at the terminal (such as HyperTerminal). Verify the followingterminal parameter (such as hyper terminal) settings:z Bits per second: 9600z Data bits: 8z Parity: nonez Stop bits: 1z Flow control: nonez Terminal emulation: VT100
