Technology Time

SC400 on Ricoh MPC2051/ 2551 is really a pain is ass. Service manual says that it is ID sensor (Image density sensor) adjustment error. Here is procedure to eleminate this error.

• Remove transfer belt unit from the machine.
• Now you will be able to see ID sensors, exact location of the sensors is just beneath the transfer belt unit.
• Clean the ID sensor with a wet cloth, Do not use dry cloth or tissue papers.
• There is a metal plate on front side of the transfer unit, remove it (2 screws) and clean it well.
• Refix all removed parts.
• Switch on the machine.

Here you go, SC400 should have vanished by now.