MFC-J3720
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FAQs & Troubleshooting |
![](/g/b/img/product/mfcj3720_eu_as_cn.jpg)
MFC-J3720
Date: 29/08/2023 ID: faq00002588_002
Verify if the Brother machine has a dial tone.
To verify your Brother machine has a dial tone, follow the steps below:
- Plug the telephone line cord into your Brother machine (labeled "LINE" for some countries), and then plug the other end directly into the wall telephone jack (socket).
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Check for a dial tone.
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Do one of the following:
- When Fax Preview is set to off or nothing, press Fax.
- When Fax Preview is set to on, press Fax and Sending Faxes.
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Check your Brother machine has Hook or Tel.
- If your Brother machine has Hook, press it, and listen for a dial tone. Verify the speaker volume is turned up.
- If your Brother machine has Tel, you can check for a dial tone by connecting an external phone to the jack (socket) labeld EXT.
Or, follow the steps below:
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Check that the speaker volume is set to LOW, NORMAL (Med) or HIGH (not OFF).
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Do one of the following:
- When Fax Preview is set to off or nothing, press Fax.
- When Fax Preview is set to on, press Fax and Sending Faxes.
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Press any key on the dial pad.
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Press Fax Start or Start.
When the LCD asks color setting, choose Black (Mono). (For some models only)
When the LCD asks Send/Receive, press Send.
The machine scans from the flatbed.
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When the message Next Page Yes/No is displayed, press NO.
- Listen for a dial tone when the machine starts to dial.
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Do one of the following:
MFC-J2320, MFC-J2330DW, MFC-J2340DW, MFC-J2510, MFC-J2720, MFC-J2730DW, MFC-J2740DW, MFC-J3520, MFC-J3530DW, MFC-J3540DW, MFC-J3720, MFC-J3930DW, MFC-J3940DW, MFC-L2805DW, MFC-L2885DW, MFC-L3735CDN, MFC-L3750CDW, MFC-L3760CDW, MFC-L3770CDW, MFC-L5900DW, MFC-L5915DW, MFC-L6900DW, MFC-L6915DW, MFC-L8340CDW, MFC-L8690CDW, MFC-L8850CDW, MFC-L8900CDW, MFC-L9550CDW, MFC-L9630CDN, MFC-T4500DW
If you need further assistance, please contact Brother customer service:
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