Fault Separation; Faults Relative With Power And Cooling System; Faults Relative With Port, Cable And Connection; Led Description - Bdcom S2928F Hardware Installation Manual

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.
 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". The
working temperature of the switch is from 0 to 40 Celsius degrees.(Fahrenheit 32
to 104 degrees)
 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 supply 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 LED Description

S2928F switch indicators and their usage:
No.
1 SYS
Abbrev. Name
System indicator
S2928F Hardware Installation Manual
If the indicator is always on, the system is
being started up.
If the indicator flickers, the system works
normally.
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Description