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Troubleshooting, Troubleshooting the power system, Troubleshooting the configuration system – H3C Technologies H3C MSR 20-2X[40] User Manual

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Troubleshooting

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
Stop bit: 1
Parity: None
Flow control: None
Terminal emulation: VT100
Reconfigure the parameters if their values are different.