H3C Technologies H3C S5120 Series Switches - Manual (Page 39)

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Maintenance and troubleshooting
Software loading failure
The switch runs with the original software version after it has failed to load new version of software. To
identify and remove the loading failure cause, perform the following check procedure:
• Verify that the physical ports are correctly connected.
• If the physical connection is loose or incorrect, reconnect the physical ports and make another try
to load software.
• If the physical connection is secure and correct, view the loading procedure information displayed
on the HyperTerminal to check for input errors, and make another try to load software.
For example, when using XMODEM, verify that you have reset the baud rate of the HyperTerminal to
9,600 bps after loading the software with a baud rate other than 9,600 bps; when using TFTP, verify that
you have specified the correct server and switch IP addresses, the correct name of the software to be
loaded and the correct working path of TFTP server; when using FTP, verify that you have specified the
correct server and switch IP addresses, the correct name of the software to be loaded and the correct
username and password.
If software loading fails for any other cause than physical connection problems and input errors, please
contact your sales agent for assistance.
Power supply failure
The S5120-EI Switch Series uses built-in power modules. Each of the S5120-EI Switch Series has three
input modes, namely, AC input, RPS input and both.
You can look at the system status LED and the RPS status LED on the front panel of the switch to identify
a power system failure. For relevant information, see Table 5 .
Table 5 Built-in power module failure LEDs description for the S5120-EI Switch Series except the
S5120-20TP-EI
LED Mark Status Description
System status LED PWR Off The switch is powered off.
RPS status LED
(S5120-28C-EI,
S5120-52C-EI,
S5120-24P-EI, and
S5120-48P-EI)
RPS
Steady yellow
The RPS input is normal, but the AC input fails or
is not connected.
Off RPS is not connected.
RPS status LED
(S5120-28C-PWR-EI
and
S5120-52C-PWR-EI)
RPS
Steady yellow
The RPS input is normal, but the AC input fails or
is not connected.
Off The RPS input is abnormal.
AC input
If the system status LED is off, an AC input failure has occurred. Check the following items: