Hardware Installation and Reference Guide
Troubleshooting
39
The indicator on the panel of the power module is OFF. The fan does not work.
[Troubleshooting]
First unplug the power cord of the power module. Check if the cables of the cabinet have been correctly connected.
Check whether the cabinet power sockets are loosely connected to power modules. Check whether the power modules
are installed correctly. If necessary, pull out the power modu les and check whether the connectors of the power system
get loose.
Fault 3: The serial port console has no output.
[Fault Description]
After the system is started, the serial console does not display any information.
[Troubleshooting]
Check whether serial port cables are connected correctly, whether serial port cables are disconnected, and whether the
connected serial port is identical with that configured on the hyper terminal. Check whether the configuration of the serial
port on the hyper terminal is the same as that described in RG-S6920-4C Software Configuration Guide. If not, modify
the serial port configuration parameters. If there is still no serial port printed information, please contact Ruijie Custome r
Service Department for technical support.
Fault 4: The serial port console outputs illegible characters.
[Fault Description]
The serial port console outputs illegible characters, which are unable to identity.
[Troubleshooting]
Such a problem is related to the settings of the serial port. Check if the settings of such parameters as the baud rate
match those in
RG-S5760C-X Series Switch RGOS Configuration Guide
.
Fault 5: The newly-inserted service card module fails to be powered on.
[Fault Description]
The system is running, yet all indicators on the panel of the newly-inserted expansion module are OFF, and the port is
faulty.
[Troubleshooting]
Check whether the module is inserted correctly. If the newly-inserted module still cannot be powered on even though the
checking is ok, please contact Ruijie Customer Service Department for technical support.
Fault 6: The link cannot be set up between fiber interfaces.
[Fault Description]
The system runs normally. After the fiber interface is inserted into the optical module and the optical fiber is properly
connected, the link cannot be set up.
[Troubleshooting]
Check whether the receiving and sending ends are wrongly connected. The sendi ng end of the fiber interface
needs to be connected to the receiving end of the other fiber interface. You can check by changing the sequence in
which the two optical fibers are connected on the optical module.
