I have a Brother MFC-420cn connected to a Dell Optiplex GX50 running Windows 2000 SP4. All aspects of the MFC work fine except the scanner. The Brother diagnostic software shows the status as "Cannot communicate with the device". If you try to scan something, the following error message appears:
"MFC-420CN USB cannot be found. Please make sure your device is ON and interface cable is properly connected to your computer (CC027)".
I installed the MFC sucessfully on another computer in my office and printing/scanning all work fine, so it's probably the computer and not the MFC. I tried the repair process that comes with the Brother software & removing and reinstalling the software all with the same results. Anyone have any ideas on what to try next?