LD630/LD640- 49 -On the other hand, if there is a reply as shown below, then the corresponding IP is used byanother network terminal and it cannot be used for the printer IP.Check CableWhen using Ethernet- In order to check whether the problem is due to the LAN cable,connect the cable connected to the printer to other terminals or thePC to confirm whether its operation is normal.When using WLAN- Connect the USB extended cable and WLAN dongle to otherterminals or the PC and confirm whether recognition operation isnormal.Check whether WLAN USB adaptor uses the Ralink RT73 chipset.WLAN USB adaptors that use chipsets other than RT73 of Ralinkwon’t work when it is connected to LD630/LD640.