No.  | Name  | No.  | Name  | 
|---|---|---|---|
A  | 1st Carriage  | E  | Scanner Motor  | 
B  | Scanner HP Sensor  | F  | IDB  | 
C  | 2nd Carriage  | G  | SIO  | 
D  | Scanner Wire  | 
The scanner is operated by wire pulleys controlled by the scanner motor. The position of the scanner (1st carriage) [A] is controlled by the scanner HP sensor [B]. The scanner HP sensor [B] is positioned at the sheet-through document feeder scanning position.