Epson DFX-5000 User Manual page 114

Caution: Make sure you don't pull on the flat gold cable
beneath the ribbon cartridge.
5. Move the print head back to the middle of the printer.
6. After taking the new ribbon cartridge out of the box, remove the
separator piece from the ribbon cartridge as shown below.
(This piece can be discarded.) Then detach the ribbon guide
from its holder on the ribbon cartridge and turn the
ribbon-tightening knob to remove any slack in the ribbon.
Maintaining and Transporting the Printer
5-5