HP 46 - Page 49

b. Pry the voltage selector card out (use a pointed tool such as a ball-point pen) and
re-insert it so that the number representing the available line voltage is readable.
c. Move the FUSE PULL lever to the right and insert the correct fuse for the new line
voltage setting. Then slide the plastic window back to the right.
NOTE
For 100 and 120 volts ac operation, use a %2 A. fuse.
For 220 and 240 volts ac operation, use a % A. fuse.