Oki C9600hdn Troubleshooting Manual page 5

IP Address/DHCP: DHCP is active and the printer has failed to
obtain an IP address. Or, the printer is operating with an IP address
other than the IP address allocated by the DHCP server.
Possible Cause
The IP addresses of the
DHCP server are exhausted.
No IP address has been
allocated.
An IP address has been
allocated by the DHCP
server function of the
access point.
The printer cannot
communicate with the DHCP
server.
Note: An IP address is normally not allocated by the DHCP server for the
Ad-Hoc mode. In the Ad-Hoc mode, you should manually set a
fixed IP address for the printer and wireless computer.
WPA-PSK Mode: The printer fails to connect when set to the
WPA-PSK mode, even though there are no problems with wireless
communication in the Open or Shared Key modes.
Possible Cause
The access point setting is
incorrect.
The Pre-Shared Key of the
printer is incorrect.
The Encryption modes for
the printer and the access
point do not match.
Suggested Solution(s)
• Check the status of the IP address allocated by
the DHCP server and set a proper DHCP server
IP address.
• Go into the printer menu and change the
printer's IP address manually.
Check the access point setting and properly set
the DHCP server function.
Check the network connection with the access
point and DHCP server. Connect it so that the
printer can communicate with the DHCP server
through the access point.
Suggested Solution(s)
Check the access point settings and make any
needed chabges.
Examples of the settings that need to be checked:
• WPA-PSK setting (Set point of the Pre-Shared
Key)
• Encryption mode (It has been set to TKIP)
Recheck the Pre-Shared Key and then set it
correctly for the printer.
Important! Be careful to discriminate between
upper and lower case for the Pre-Shared Key.
Set the Encryption mode for the access point to
TKIP.
5
Printer Communication Problems