Epson 1010 User Manual page 163

WARNING: High voltages are present inside the printer
when the power is on. Do not attempt to remove the upper
case unless the printer is turned off and the power cord is
unplugged. Also, try not to touch contacts on the circuit
board of the printer because many of the components can
be destroyed by the static electricity present in your body.
Do not change the settings of any DIP switches on the
main board.
2. Remove the screw securing the interface board cover and lift off
the cover.
5-39
Using the Printer Options