Epson B134101 - DM D210 - Vacuum Fluorescent Display Character Installation Manual page 34

Setting the DIP switches
CAUTION:
Turn off the DM-D210 while removing the DIP switch cover to
prevent electrical damage to the DM-D210.
1. Turn off the power for the DM-D210.
2. Remove the DIP switch cover.
DIP switch cover
3. Change each setting of the switches with a pointed object, such as a
pen tip or small screwdriver.
4. Close the cover, and turn the power on.
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