Hi
The first thing I tend to do with any fault on a computer or related hardware, is to turn it off, unplug it from the power supply, turn off and unplug the rest of the system components. Wait for a few minutes, plug the equipment back in and turn all components on and then reboot the computer. After this I start to look elsewhere for fault diagnosis and repair.
In your case I found a list of codes for your machine here:
Error Codes Ricoh Aficio MPC2030
Here you can view the specific codes by using the drop down menu in the middle of the page. You can also change the make & model of machine by using the drop down menus near the top of the page. Also you can download a pdf format Service Manual for the machine by using the link just above the error table.
Hope this is helpful, if so would you please register that with Fixya
Cheers
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