Check DIMM installation
Turn the product on. Check that the product is in the Ready state after it has gone through the startup sequence. If an error message appears, do the following:
|Check the Installed Personalities and Options section on the Configuration page and compare it with the Configuration page that you printed before the DIMM installation.
|The DIMM might not be installed correctly. Repeat the installation procedure.
The DIMM may be defective. Try a new DIMM.
HP Color Laserjet CP2020 Check DIMM installation