Ricoh D131 Service Manual page 1481

Replacement and Adjustment
Example 2: FM2: Low (Stopper to Close to the Nip)
The black arrow shows the direction of paper feed from right to left. When the skew sheet is
opened the Front edge is shorter than the Rear edge.
Skew Correction Reference Diagrams and Table
Skew Correction Reference Diagrams
Key
Symbol/Color
Blue line
Green line
D454/D615
What It Means
Stopper 1 needs adjustment
Stopper 2 needs adjustment
Stopper 3 needs adjustment
Peak fold (points left)
Valley fold (points right)
88 SM