Chapter 5 Hardware Fault Analysis; Fault Separation; Faults Relative With Power And Cooling System; Faults Relative With Port, Cable And Connection - Bdcom S2528PB Hardware Installation Manual

Chapter 5 Hardware Fault Analysis

The part describes how to remove the fault from the switch.

5.1 Fault Separation

The key for resolving the systematic faults is to separate the fault from the system.
You can compare what the system is doing with what the system should do to
detect the fault. You need to check the following subsystems:
Power and cooling systems—power and fan

Port, cable and connection—ports on the front template of the switch and the

cables connecting these ports

5.1.1 Faults Relative with Power and Cooling System

Do the following checkups to help remove the fault:
When the power on-off is at the "ON" location, check whether the fan works

normally. If the fan does not work well, check the fan.
The working temperature of the switch is from 0 to 40 Celsius degrees. If the

switch is too hot, check whether the air outlet and air inlet are clean and then
do relative operations in section 2.3 "Requirements for Common Locations".
If the switch cannot be started and the PWR indicator is off, check the power.


5.1.2 Faults Relative with Port, Cable and Connection

Do the following checkups to help remove the fault:
If the port of the switch cannot be linked, check whether the cable is correctly

connected and whether the peer connection is normal.
If the power on-off is at the "ON" location, check the power source and the

power cable.
If the console port does not work after the system is started up, check

whether the console port is set to a baud rate of 9600 bps, eight data bits, no
sum check bit, one stop bit and no traffic control.

5.2 Indicator Description

The following table shows the indicators of the S2528PB switch and their
description:
S2528PB Hardware Installation Manual
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