To confirm, check the back of your machine. It may or may not have a PSU access panel, but should not look like in the image below. Note the two larger bolts on the pictured PSU access panel. If your machine has said bolts, than you may ignore this article.
Note also the shape of the access panel when comparing it to your own. Your Type A Machines Series 1 is Factory configured to use US Standard 110 Volts AC. If you are in the United States, you’re ready to go! If you are using your printer outside of the United State you MAY need to switch your power supply voltage setting. CAUTION: FAILING TO PROPERLY SET YOUR VOLTAGE WILL BREAK YOUR MACHINE, REQUIRING REPLACEMENT ELECTRONICS.
If you do not know your local voltage, review the following article to determine whether you need to switch your voltage: https://en.wikipedia.org/wiki/Mains_electricity_by_country
If you are using your printer with a Voltage other than 110 Volts you will need to switch the current setting on the power supply. This is an easy and safe procedure as long as it is done properly.
Turn the machine around to look at the back. Caution: Make sure the power cable is Disconnected! Remove the small panel Marked PSU ACCESS by unscrewing the screws on the back of the machines – it’s the one with the plug and switch in it.
Do not disconnect any wires, there is enough slack in the cables to allow switching. Mid way down on the power supply through the metal grating you will see a switch with numbers on it. There will also be a yellow sticker on the power supply indicating voltage and switch positions. Your switch will be set to 115V.
Using the included hexagonal wrench, move the switch to 230V position. You should hear a click. Double check the switch is all the way over to 230V and not between settings. Your power supply is now set. Replace the electronics cover.