Applied Engineering Sirius IIGS User Manual page 9

iv) Gently pull back on tab at bottom front of power supply.
A small flatblade screwdriver may keep you from breaking a
nail.
v) Lift out power supply.
You may want to store the power supply in the Vulcan's box.
3 ) Remove Vulcan from Packing.
4 ) Check Voltage Setting
The switch setting on back of the Vulcan must be set to the
proper voltage (115 in the United States).
2 Vulcan
Unplug Internal Cord
Pull Back Tab