H3C S7500E Series Ethernet Switches Installation Manual

Installation Manual
H3C S7500E Series Ethernet Switches Chapter 7 Troubleshooting
7-2
–Flow control: None
–Terminal emulation mode: VT100
z Something is wrong with the console cable.
7.1.2 Illegible Characters on the Terminal
If the configuration terminal displays illegible characters, configuration of parameters
on the terminal might be incorrect. In this case, check the configuration according to the
correct one listed in section
7.1.1 “No Display on the Terminal” on page 7-1.
7.2 Troubleshooting Power Modules
7.2.1 Troubleshooting the PSR320-A and the PSR320-D
The power modules PSR320-A and PSR320-D each have only one power LED.
1) When the power LED is in green, the power module works normally.
2) When the power LED is in red, the power module is faulty. It is possible that
z The power output is abnormal.
z The power module is overheated.
z The power module fan is faulty.
3) When the power LED is OFF, the power supply of the system is faulty.
In this case, check whether:
z The power switch is turned on.
z The power cable is properly connected.
z The voltage is correct.
On the SRPUs, there are also LEDs indicating the working status of the power modules.
For details, refer to related description about the power LEDs in Chapter 1 “Product
Overview”.
7.2.2 Troubleshooting the PSR650-A and the PSR650-D
Refer to section 7.2.1 “Troubleshooting the PSR650-A and the PSR650-D” on page
7-2.
7.2.3 Troubleshooting PSR1400-A
The power module PSR1400-A has three status LEDs, which indicate the input and
output statuses of the power module and the working status of the power module fan,
respectively.
Table 7-1 describes the colors and working status of the three LEDs in different cases.