This chapter deals with the causes and fixing of errors and faulty or wrong settings detected during the network diagnosis in the start phase, which result in a failed connection.
Cause of fault: network cable
Fault status LEDs
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Cause
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Remedy
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Network cable (copper or optical fiber) is not connected to the Thin Client
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•Connect network cable to the Thin Client |
In case of copper cable:
Network cable is incorrectly wired
(Tx and Rx pair mixed up)
(Both Tx or Rx wires are not connected)
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•Check network connection •Check pin allocation •Wire cable correctly •Cable wires according to EIA/TIA-T568 A or B or Profinet Standard |
In case of optical fiber
Optical fiber cables are mixed up
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•Check network connection •Switch optical fiber cables |
In case of optical fiber
SK-KJ17xx defect or without potential
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•Supply power to SK-KJ17xx •Replace SK-KJ17xx |
Network cable is not connected to the counter station (computer / KVM-box/switch)
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•Connect network cable to the counter station (computer / KVM-box/switch) |
Network cable / patch cable (copper or optical fiber) is defect
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•Test network cable / patch cable •Replace network cable / patch cable |
Cause of error Local IP address
Fault status LEDs
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Cause
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Remedy
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Internal fault when allocating the local IP address of the Thin Client
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•Switch the Thin Client off and then on again. |
Cause of fault Ping
Fault status LEDs
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Cause
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Remedy
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Counter station (computer / KVM-box / switch) cannot be contacted
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•Switch on counter station •Check whether counter station is supplied with power •Check connection between switch and counter station •In case of optical fiber
Check whether network interface of SK-KJ17xx is connected |
In case of copper cable:
Not all network cables correctly wired
(single wire missing)
(+ and - wire of the Tx or Rx cable are switched)
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•Check network connection •Check pin allocation •Wire cable correctly •Cable wires according to EIA/TIA-T585 A or B or Profinet Standard |
In case of optical fiber
Transmitter cable incorrectly connected
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•Connect transmitter cable correctly •Check transmitter cable (plug / broken fibre) |
If using a switch:
No connection between switch and computer or KVM-box
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•Check connection between switch and counter station •In case of optical fiber
Check whether network interface of SK-KJ17xx is connected |
Firewall is blocking ping requests to the counter station.
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•Check firewall settings on counter station. |
Incorrect IP address configuration of the Thin Client or the KVM-box.
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•Check that target address matches the counter station. •Correct the IP address configuration of the stations. |
Fehlerursache IP Adressenkonflikt
Fault status LEDs
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Cause
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Remedy
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A different network station has the same IP address as the Thin Client
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•Check the IP addresses of the network stations •Allocate unique IP addresses to the network stations |
Cause of fault Remote Station
Fault status LEDs
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Cause
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Remedy
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Counter station cannot be reached with the current IP settings (without gateway)
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•Match IP settings to the counter station (must be within the same sub-net) •Define gateway address |
IP settings of the counter station are in a different sub-net
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In case of automatic IP configuration:
DHCP server not available in network
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•Check availability of DHCP server •Enable DHCP server function |
In case of symbolic target address (host address):
Name of counter station cannot be unscrambled
(DNS server unavailable)
(DNS service not started)
(Symbolic name not in DNS table)
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•Contact network administrator •Provide DNS server •Start DNS service •Enter symbolic name into table |
Cause of fault: RDP/VNC server
Fault status LEDs
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Cause
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Remedy
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No Remote Server Service of the expected type (RDP/VNC) is active at the counter station.
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•Instal correct Remote Server Service •Activate correct Remote Server Service •Adjust configuration of Remote Server Service |
Firewall is blocking connection to remote server
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•Check firewall settings on counter station. |
In case of RDP:
Settings / policies in the counter station prevent connection
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•Check RDP settings / policies on counter station. •Correct RDP settings / policies on counter station. |
In case of VNC:
Settings of the VNC server prevent connection
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•Check VNC settings on counter station. •Correct VNC settings |
In case of KVM-box
The host computer's digital video signal (DVI) is incompatible with the KVM-box
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•Use analogue (VGA) video connection •Replace graphics card of the host PC •Update graphics driver of the host PC |
For NetC@p:
Settings of the NetC@p server prevent connection
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•Check VNC settings on counter station. •Correct VNC settings |
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