Troubleshooting The Configuration; No Information Is Displayed On The Terminal; Troubleshooting Power - 3Com 3C17500 Installation Manual

6
Troubleshooting the
Configuration
No information is
displayed on the
terminal
The displayed characters
are illegible
Troubleshooting
Power
T
ROUBLESHOOTING
This chapter covers the following topics:

Troubleshooting the Configuration

■

Troubleshooting Power

■
Troubleshooting the Fans
■
Troubleshooting I/O Modules
■
The simplest way to diagnose a fault is to check the system status LEDs on the
Fabric modules. In addition, with the DeviceMgr network management system,
you can also locate the fault through management software.
After the switch is powered on, booting information is displayed on the
configuration terminal. If the configuration system has failed, there is no screen
display at the configuration terminal or the displayed characters are illegible.
If there is no information displayed on the terminal after the Switch 8800 is
powered on, check that:
The power system is working normally.
■
The Fabric is working normally.
■
The console cable has been connected to the console port on the Fabric.
■
If this procedure does not reveal the problem, verify the following:
The console cable is connected to the serial port that is configured on the
■
terminal.
Console terminal parameters are set properly. See "Setting Terminal
■
Parameters" on page 29.
The console cable is not damaged.
■
If the displayed characters are illegible, the console terminal parameters may not
have been set correctly. See "Setting Terminal Parameters" on page 29.
Table 32 describes power LEDs on the power supply.
Table 32 Power LEDs on the Power Supply
LED
INPUT
Status Description
On — The power input is normal and the power supply switch is in
the ON position.
Off — The power input has failed or has not been turned on.