James, first thing I would suggest to do, is to follow the HP trouble shooting guide :"
Solve network problems (HP Color LaserJet CP1510 Series Printer only)
Check the following items to verify that the product is ommunicating with the network. Before you begin this troubleshooting procedure, print a configuration page. See Print information pages on page 36.
1. Are any physical connection problems evident between the workstation or file server and the product?
Verify that the network cabling, connections, and router configurations are correct. Verify that the network cable lengths meet network specifications.
2. Are the network cables connected correctly?
Make sure that the product is attached to the network through the appropriate port and cable. Check each cable connection to make sure that it is secure and in the right place. If the problem continues,
try a different cable or connect to different ports on the hub or transceiver. The amber activity light and the green link status light next to the port connection on the back of the product should be lit.
3. Can you "ping" the product? (Windows)
a. Click Start, click Run, type cmd, and click OK to open an MS-DOS command prompt.
b. Type ping followed by the product IP address. For example, type: ping 192.168.45.39
If the ping command is successful, a list of replies from the product appears in the window.
c. If you can ping the product, verify that the IP address configuration for the product is correct on the computer. If it is correct, delete the product, and then add it again.
If the ping command failed, verify that the network hubs are on, and then verify that the network settings, the product, and the computer are all configured for the same network.
4. Have any software programs been added to the network?
Make sure new programs are compatible and that they are installed correctly and use the correct printer drivers.
5. Can other users print?
The problem might be workstation-specific. Check the workstation network drivers, printer drivers, and redirection (capture in Novell NetWare).
6. If other users can print, are they using the same network operating system?
Check your system for the correct network operating system setup.
7. Is your protocol enabled?
Check the status of your protocol on the configuration report. You can also use the embedded Web server, HP ToolboxFX, or Macintosh Configure Device to check the status of other protocols.
8. Does the product appear in HP Web Jetadmin or other management programs?
● Verify the network settings on the network configuration page.
● Confirm the network settings for the product by using the control panel." If nothing else, you can get the service manual from here. Hope this helps, good luck.