- Click the Open Schematic Diagrams button  on the Schematic toolbar. on the Schematic toolbar.The Select schematic diagrams to open dialog box appears. 
- Navigate to the geodatabase that contains the schematic dataset where the desired schematic diagram is referenced.
- Browse to the schematic dataset or the schematic folder that contains the schematic diagram.
- Click the desired schematic diagram.
- Click Add.
The schematic diagram is displayed in a new data frame. When several schematic diagrams are selected during step 4, each one opens in a new data frame.