Epson 4500 - Manual (Page 104)

Choosing a Character Table
To select a character table, set DIP switch 1-7 according to the table
below.
CAUTION:
To change the setting of a DIP switch, first turn
off the printer, change the DIP switch, and then turn the
printer back on.
Tables showing which characters are printed in each of the character
tables are listed in the Appendix.
Using the Printer 3-25