Troubleshooting for wireless LAN connection

Unable to connect to wireless LAN
For Windows/macOS
Cause
Solution
Reference
The wireless LAN module is not enabled.

To connect to a wireless LAN, set [Extended Network] to [Wireless].
Connecting via a wireless LAN

Settings are not insufficient to connect.

To connect via the wireless LAN access point or the wireless LAN router, set the wireless LAN (Infrastructure) accordingly.
To connect a mobile device directly to this machine, set the wireless LAN (AP mode) accordingly.

Connecting via an access point (Infrastructure)
Connecting directly with this machine (AP mode)

Network connection settings are incorrect.

  • Wireless LAN (Infrastructure) and Wireless LAN (AP mode) cannot be enabled at the same time.

  • To connect via a wireless LAN (Infrastructure), set [Wireless(AP Mode)] to [Disable] and [Wireless(Infrastructure)] to [Enable].

  • To connect via a wireless LAN (AP mode), set [Wireless(Infrastructure)] to [Disable] and [Wireless(AP mode)] to [Enable].
Connecting via a wireless LAN
The settings of wireless LAN (Infrastructure) are incorrect. If you are connected via a wireless LAN (Infrastructure), check the infrastructure settings.
Connecting via an access point (Infrastructure)
The settings of wireless LAN (AP mode) are incorrect. If you are connected via a wireless LAN (AP Mode), check the AP mode settings.
Connecting directly with this machine (AP mode)
A timeout occurs during connection. Connect by specifying the wireless LAN access point you want to use from the wireless LAN access points detected by this machine.
Connecting by selecting a wireless LAN access point from the operator panel


For Windows
Cause
Solution
Reference

The IP address is incorrect.

  • Make sure 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.

  • 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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Unable to connect to wireless LAN (Infrastructure)

First, print out the Network Information, and then check the following explanation while having a look at items numbered ① to ⑥ in the following figure in Wireless (Infrastructure) Information.

Network Information can be printed from [Print Information] - [Network].


Unable to connect to the access point (State of ④ is not set to "Connected")
Cause
Solution
Reference
[Wireless] is not selected in the [Extended Network] settings. Select [Admin Setup] - [Network Setup] - [General Setup] - [Extended Network] - [Wireless].
Connecting via an access point (Infrastructure)
The wireless LAN access point does not function properly. Check that the power of the wireless LAN access point is turned on and it functions properly. -
[Wireless (Infrastructure)] is set to [Disable].* Above ①

Set [Wireless(Infrastructure)] to [Enable].

*Wireless LAN (Infrastructure) and Wireless LAN (AP mode) cannot be enabled at the same time.
Connecting via an access point (Infrastructure)
[SSID] is incorrect. Or it is blank.* Above ②

Check the SSID of the wireless LAN access point you want to connect is correct, and connect with the correct SSID.

If it is blank, the settings for the wireless LAN connection of this machine are insufficient. Set [Wireless(Infrastructure) Setting].
Connecting via an access point (Infrastructure)
The encryption key is incorrect.

Check the encryption key of the wireless LAN access point you want to connect is correct, and set the correct encryption key.

When a same number is lined up in the encryption key, be sure to press «OK» after inputting each number.
Example: To input 1233,
press «1» → «2» → «3» → «OK» → «3».
It is incorrect to press «1» → «2» → «3» → «3». In that case, «1»«2»«d» is input, which is not the correct encryption key.

Connecting via an access point (Infrastructure)
The setting of [Security] does not match the security of the wireless LAN access point.* Above ③

Check the security (encryption method) of the wireless LAN access point that you want to connect, and set it to keep consistent.
Connecting via an access point (Infrastructure)


Communication is not stable
Cause
Solution
Reference
The RSSI value is too small.* Above ⑥

The signal strength is insufficient.

Put this machine in an unobstructed view position near the wireless LAN access point. (The recommended distance is 30 m or less.)

Do not place an electric appliance (especially microwave oven or digital cordless telephone) that emits weak electronic waves near this machine.

It may be difficult to connect if there is a metal, aluminum sash or reinforced concrete wall between this machine and the wireless LAN access point.

-
The current frequency band is congested.* Above ⑤

[Band] displays the current frequency band to which this machine is connected.

This machine is compatible with the 2.4 Ghz/5.0 GHz band.

If the wireless LAN access point is compatible with the 2.4 GHz/5.0 GHz band, try changing the connecting frequency band of the machine (or changing the SSID settings).
Connecting via an access point (Infrastructure)


Able to connect to the access point but unable to communicate
Cause
Solution
Reference
The IP address is in the same segment as the one on the wired side.

Since the communication may be unstable if the wired LAN and wireless LAN are connected to the same subnet, please connect to a different subnet.

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The setting of the enabled default gateway is wired LAN instead of wireless LAN.

To communicate with a terminal outside the segment via a wireless LAN, press the scroll buttons on the operator panel to select [Admin Setup] - [Network Setup] - [General Setup] - [Enabling Default Gateway] and set it to [Wireless(Infrastructure)].

In that case, the wired LAN cannot communicate with terminals outside the segment.

*You can check from [General Information] - [Enabling Default Gateway] in Network Information.
Connecting via an access point (Infrastructure)


Unable to connect to a wireless LAN (AP mode)

First, print out the Network Information, and then check the following explanation while having a look at items numbered ① to ④ in the following figure in Wireless (AP Mode) Information.

Network Information can be printed from [Print Information] - [Network].


Terminals cannot connect
Cause
Solution
Reference

[Wireless] is not selected in the [Extended Network] settings.

 Select [Admin Setup] - [Network Setup] - [General Setup] - [Extended Network] - [Wireless].
Connecting directly with this machine (AP mode)

[Wireless (AP Mode)] is set to [Disable].

*Above ①

Set [Wireless(AP Mode) Setting] - [Wireless(AP Mode)] to [Enable].

*Wireless LAN (Infrastructure) and Wireless LAN (AP mode) cannot be enabled at the same time.
Connecting directly with this machine (AP mode)

[SSID] is not consistent with the SSID selected by the wireless terminal.

*Above ②

Check that the SSID of this machine matches the SSID selected by the wireless terminal you want to connect.
Connecting directly with this machine (AP mode)

The setting of [Security] is not consistent with that of the wireless terminal.

*Above ③

Check that the security of this machine matches the security set for the wireless terminal you want to connect.
Connecting directly with this machine (AP mode)

The encryption key is not consistent with that of the wireless terminal.

Check that the encryption key of this machine matches the encryption key set for the wireless terminal you want to connect.

You can check from [Wireless(AP Mode) Setting] - [Manual Setup].
Connecting directly with this machine (AP mode)
[Number Of Connected] is set to 4.* Above ④

A maximum of 4 terminals can be connected wirelessly (AP mode) to this machine. Terminals exceeding the maximum number cannot be connected. Disconnect other terminals and try to connect again.
Connecting directly with this machine (AP mode)