User`s manual
EC-520 User’s Manual
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2.3.4 Connecting the Serial Interface Cable
1. Make sure that the host computer and the printer are both turned off, connect the serial
interface cable to the connector of the printer and tighten the screws as shown in Figure 2-5.
2. Connect the other end of the cable to the host computer’s serial connector and tighten the
screws on both sides.
2.3.5 Connecting the Ethernet Interface Cable
Plug the RJ-45 crystal plug of the internet cable into the printer, and plug the other plug into
the LAN.(shown as figure 2-6).
Figure 2-5 Connecting the serial interface cable
Serial interface cable
Serial interface
Screw
Figure 2-4 Connecting the USB interface cable
USB interface
USB interface cable
Ethernet cable
Ethernet connector
Figure 2-6 Connecting the Ethernet Interface Cable










