"Connection Fail : Err-03" appears on the LCD Display Screen. What does it mean?

The Authentication/Encryption methods used by the selected wireless access point/router are not supported by your machine.


For infrastructure mode, change the authentication and encryption methods of the wireless access point/router.
Your machine supports the following authentication methods:



Authentication method Encryption method
WPA-Personal TKIP
WPA2-Personal AES
Open WEP
None (without encryption)
Shared key WEP


If your problem is not solved, the SSID or network settings you entered may be incorrect.

Reconfirm the wireless network settings.

See How to find the Network Name (SSID) and Network Key (Password)?

If your question was not answered, have you checked other FAQs?

Have you checked the manuals?

If you need further assistance, please contact Brother customer service:

Related Models

CM350, CM350e, CM350H, CM350R, CM650W, CM650WX, SDX125, SDX125e, SDX125e Titanium, SDX125i, SDX125TS, SDX135PRO, SDX225, SDX225F, SDX230D, SDX230DX, SDX85, SDX85C, SDX85M, SDX85S

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