DS-3D2228P Hardware Installation Manual
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Hardware Fault Analysis
The part describes how to remove the fault from the switch.
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
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.
If the switch cannot be started and the PWR indicator is off, check the
power.
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.
Indicator Description
The LED indicator shows that the switch is running. The following table shows the
indicators of the DS-3D2228P switch and their description:
