TSR2900-10 Hardware Installation Manual
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Chapter 5 Hardware Fault Analysis
The part describes how to remove the fault from the router.
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——power, cable；
Port, cable and connection—ports on the front template of the router 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 router is from 0 to 40 Celsius degrees. If the
router 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 router 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 router 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
TSR2900-10 router and their description:
When the router is powered on, the
indicator is on.
When the indicator is
always on, the system is
being started up.
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