Techroutes TSR 2800-10C, Руководство по установке оборудования

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TSR 2800-10C 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 and cooling systems
—power and 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.

If the router is too hot, check whether the air outlet and air inlet are clean and then
do relative oper
ations in section 2.3 “Requirements for Common Locations”. The
working temperature of the router is from 0 to 40 Celsius degrees (32-104
Fahrenheit degrees)

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

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 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.