An IP address conflict occurs when two or more devices on the same network are assigned the same IP address. To explain why this is a problem, we must take a step back and look at what IP addresses are for.
Please forgive my ignorance on the colorqube but how do you access the network configuration? Is it from the control panel or are you accessing via a web browser and the machines IP address?
In that case... activate the DHCP and reboot.
After change it back disabled and reboot again. After you will be able to change the IP.
Here's something you can try.
After deactivating the DHCP reboot the machine. You should be able to set a valid IP.
1. On the TCP/IP (v4) Settings page, select TCP/IP v4 Enabled to enable IPv4.
2. Next to Auto IP Enable select one of the following:
• On: The printer attempts to assign an IP Address using the Auto IP Protocol. This protocol
enables a network device to assign an IP Address to the device when DHCP/BOOTP requests
for IP address assignment fail, and the device has no static IP address. The IP address
assigned is in the range of 169.254.1.0 to 169.254.254.255. The default setting is On.
• Off: The printer does not use the Auto IP protocol to assign an IP address. This setting is
recommended for use on enterprise networks.
3. Next to BOOTP/DHCP, select one of the following:
• On: The printer issues BOOTP and DHCP requests on startup. The BOOTP/DHCP server assigns
the printer an address.
• Off: The printer does not issue BOOTP or DHCP requests on startup. Select this setting to
configure the printer TCP/IP settings manually.
Note: To use the printer with BOOTP, set up a reservation for the printer on the BOOTP server.
4. To configure TCP/IP settings manually, select Off next to BOOTP/DHCP, and click Save Changes.
Note: Before assigning a static address, ensure that the address is not used by another device on
the network. If another device is assigned the same IP address, the printer will go offline until the
conflict is resolved.
5. Next to IP Address, type the printer IP address. The format is x.x.x.x, where x represents a number
from 0–255. The value entered must be a valid IP address and not 0.0.0.0, 255.255.255.255, or
any address starting with 127 or 224–255. The value in this field is overwritten if BOOTP/DHCP is
enabled and a BOOTP or DHCP server assigns a value.
6. Next to Network Mask, type a number for the Network Mask. The format is x.x.x.x, where x
represents a number from 0–255. The value in this field is overwritten if BOOTP/DHCP is enabled
and a BOOTP or DHCP server assigns a value.
7. Next to Router / Gateway Address, type the gateway host IP address. The gateway is used to
retransmit the packets from the current network segment to another network segment. The
format for each address is x.x.x.x, where x represents a number from 0–255. The value in this field
is overwritten if BOOTP/DHCP is enabled and a BOOTP or DHCP server assigns a value.
8. Click the Save Changes button.