Troubleshooting for Wired LAN connection

For Windows/macOS
Cause
Solution
Reference

A crossover cable is used.

Use a straight cable.

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There is a compatibility problem with the hub.

Press the scroll buttons on the operator panel several times to select the proper connection from [Admin Setup] - [Network Setup] - [Wired(LAN1) Setup] - [Hub Link Setting].
See the Instruction Manual supplied with the hub.

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Wired LAN (LAN1) settings are not appropriate.

Check the wired LAN (LAN1) settings.

Admin Setup
The optional wired LAN (LAN2) are set incorrectly.Check the wired LAN (LAN2) settings.
Admin Setup
Both wired LAN (LAN1) and optional wired LAN (LAN2) are connected to the same network segment.

Although this machine can use wired LAN (LAN1) and optional wired LAN (LAN2) at the same time, connecting wired LAN (LAN1) and optional wired LAN (LAN2) to the same subnet may cause unstable communication. To stabilize the communication, set the IP address of a different segment and connect it to a different network.

Admin Setup
Wired LAN settings are not appropriate.

Only one of the gateway addresses from standard wired LAN (LAN1), optional wired LAN (LAN2) and wireless LAN is enabled. Select standard wired LAN (LAN1) or optional wired LAN (LAN2) from [Admin Setup] - [Network Setup] - [General Setup] - [Enabling Default Gateway].

Admin Setup

Depending on the network device you are using, the connection may become unstable if Energy Efficient Ethernet (EEE) of the wired network (LAN1) of this machine is enabled.

Check if the switching hub supports Energy Efficient Ethernet (EEE).
If it supports, change [Network Setup] - [Network Connection] - [Wired (LAN1) Setup] - [Energy Efficient Ethernet] to [Disable] from the web page of this machine and check if it improves.

Managing the machine from the web page
When the optional wired LAN (LAN2) is used, the optional wired module is not enabled.Set [Extended Network] to [Wired(LAN2)].
The optional wired module and the Wireless LAN module cannot be enabled at the same time.
Installing the Wired LAN module


For Windows
Cause
Solution
Reference

The IP address is incorrect.

  • Check that the IP address of this machine matches the one set on the PC.

  • Make sure the IP address does not overlap with that of other devices.

  • If [IP Address Set] is set to [Auto], the address may change dynamically. If the setting changes frequently, change [IP Address Set] of this machine to [Manual], and match the IP address of this machine with the one set on the PC.

  • Make sure the configured IP address, subnet mask and gateway address are all correct.

  • Make sure that the print port of the printer driver is correct.

  • For the OKI LPR Utility, check the IP address settings with the OKI LPR utility.

Printing the menu map (configuration)
OKI LPR Utility

The WSD port is in use.

When the print port does not function well with [WSD], specify the IP address or short printer name of this machine in the Standard TCP/IP port, and add the print port.

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