3com S7906E Guía De Instalación Rápida

 

7-2 

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 

“

” on page 

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”. 

Refer to section “

” on page 

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. 

 describes the colors and working status of the three LEDs in different cases. 

Table 7-1 Description of LEDs on the PSR1400-A 

INPUT  

Green 

The power input is normal. 

OUTPUT  

Red 

No power is output. 

The power module is 
connected but the power 
switch is turned off. 

FAN  

Red 

The power module fan does not rotate.

INPUT 

Green 

The power input is normal. 

OUTPUT 

Green 

The power output is normal. 

The power module is 
connected and the power 
switch is turned on. 

FAN 

Green 

The power module fan works normally.

INPUT  

Green 

The power input is normal. 

OUTPUT  

Red 

The power module goes into the 
self-protection state. 

There is a short circuit, 
over-current, or over voltage 
on the output circuit. 

FAN  

Green 

The power module fan works normally.