Ricoh D131 Service Manual page 896

7. Locate the jumper [A] on the FCU. There are two bare pins visible next to the "ON" notation
on the board. (This is the OFF position.)
8. Remove the jumper [B].
9. Move the jumper one set of pins to the right and re-set it on the pins so that a bare set of pins
[C] is visible next to the "OFF" notation. (This is the ON position.)

If the jumper is not moved from the OFF to the ON position, the machine will return
SC672 (Controller Startup Error) when the machine is powered on.
10. Attach the gasket to the bracket.
11. Disconnect the bottom edge of the IPU (
D619
x3, x1).
4 SM