Canon dr 7580 error code E30 - Canon DR-7580

As per the manual it is "In the event of a pick-up error, the document
was fed to the front registration sensors." Clean all the Sensors and try. Use isoproyl alcohol only.

S. Mohan, India

Check the edges for any tiny scrap of paper.
Step by step solution starts on page 67 click link below.
LINK

If the main board (CPU PCB) not installed properly you get this error.
S. Mohan

According to the service manual if 6080 and 9080c cpu/motherboard are interchanged this appears.

E31 refers to abnormalities in mechanical Counter. Check if it is installed properly. The scanner can work without this also.
S. Mohan, Chennai, India

Use Qumatool to check if all the sensors are working okay. Normally sensors dont fail, there must be a small piece of paper (like the 'dot' of pre-printed stationery) sticking somewhere.
S. Mohan

If the Black lines are jaggered and are vary in size with different levels of brightness, then most likely it is scratch on the glass. If the lines are sharp and perfect and does not change when different brightness is chosen, then it could be failure of CIS module (Try this under B&W mode). To the best of my knowledge there is no concept of initialising the CIS, you may need to clean the Shading sheet.
S. Mohan, Chennai, India

Clean the Scanner thoroughly and start doing your work with scanner.

Canon error numbers are logical! Error starting with 'P' is paper related. If there is already soem paper inside the scanner while inititalising, u will get this error. Check for shreds of paper in the paper path. (Error starting with 'C' is Cover and 'E' isn Engineer reqd)
S. Mohan, Chennai, india  

There may be a samll shred of paper stuck in the sensor, Search thoroughly.
S. Mohan