You need to close the lid before the cartridges reach its destination.

Turn on the printer again you will see that the cartridges will start moving towards the left.

Now in the next step, open the lid of the printer.Turn Off the Ricoh printer and disconnect it from the power source.Other than this you can try the following methods to fix the printer error. Make sure you clean all the five sensors. If in case you are unable to reach the sensors of the printer, you can make use of canned air to clean them. You can also make use of a tiny bit of alcohol for cleaning purpose. You can wipe out the dust with the help of a soft dry cloth. To stop such error from emerging, you should often clean the sensor yourself.

There can be many causes behind the occurrence of this error which may include ID sensor fittings, loose connector, broken, defective sensor, dirty ID sensor dirty, defective ID sensor, defective IOB, BCU faulty, LD unit broken, CGB/PPG power pack issue, etc. Error code SC400 is another most commonly occurring error code that takes place in the Ricoh MP C2500 printer.

Ricoh mpc2551 sc400 error code