H3C MSR 20-20, Руководство по установке

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7
T
ROUBLESHOOTING
Troubleshooting the
Power System
Symptom:
The PWR LED on the PSU is OFF.
Solution:
Check that:
■
The power switch on the router is turned on
■
The switch of the power source is turned on
■
The power cord is correctly connected
■
The power source meets the requirement of the router
Troubleshooting the
Configuration System
If the router passes POST after powered on, the console screen displays the startup
banner; if faults occur to the configuration system, the console screen displays
nothing or only illegible characters.
Symptom 1:
After the router is powered on, the console screen displays nothing.
Solution:
Step 1: Check that:
■
The power system is normal.
■
The console cable is correctly connected.
Step 2: Check the console cable and the terminal (HyperTerminal for example)
settings.
Symptom 2:
After the router is powered on, the console screen displays illegible characters.
Solution:
Verify that the terminal settings are as follows:
Baud: 9600
Data bits: 8