
If your Brother L2340 printer is in deep sleep mode and you need to print, there are a few things you can try. Firstly, check if there is an option to disable sleep mode in your printer's settings. If not, you can try pressing the Go button to wake the printer to Ready mode. Alternatively, you can try turning the printer off and then on again, and sending a print job while it is in ready mode. If you are still unable to print, check the machine's display for any error messages and clear them, and ensure that there is paper in the tray.
How to Wake Brother L2340 from Deep Sleep
| Characteristics | Values |
|---|---|
| Sleep Mode Timer | Reset when the machine receives PC data or makes a copy |
| Factory Setting | 05 minutes |
| Sleep Mode Display | "Sleep" on the LCD |
| Wireless Printing/Scanning | Ensure the machine and wireless router use the latest firmware |
| Troubleshooting Steps | Check for paper in the tray, clear any error messages, and verify the IP address |
| Sleep Time Adjustment | Press "Menu" -> "General Setup" -> "Ecology" -> "Sleep Time" -> Enter idle time -> Press "OK" -> Press "Stop/Exit" |
| Wake-Up Button | Press the "Go" button to wake the printer to Ready mode |
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What You'll Learn

Press the Go button
If your Brother L2340 printer is in deep sleep mode, you can wake it up by pressing the "Go" button. This will wake up the printer and put it into Ready mode.
Sleep mode reduces power consumption by turning off the fuser inside the printer when it is idle. The length of time the printer is idle before it enters sleep mode can be adjusted in the settings. The factory setting is 5 minutes, but you can choose any number of minutes between 00 and 99.
To adjust the Sleep Mode setting, follow these steps:
- Press "Menu" and choose "General Setup".
- Select "Ecology" and then "Sleep Time".
- Use the keys on the dial pad to enter the number of minutes you want the machine to be idle before it enters Sleep Mode.
- Press the "Start" and "Options" keys simultaneously. The LCD will display "Sleep Mode: On".
- Press the "Up" or "Down" arrow key to choose "Off".
- Press the "OK" key.
- Press the "Stop/Exit" key to exit the menu.
If your printer won't wake up from sleep mode, try turning it off and then back on again. Then send a print job while it is in Ready mode.
You can also try adjusting the Sleep Time settings as described above to prevent the printer from automatically entering deep sleep mode.
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Adjust Sleep Mode settings
Adjusting the Sleep Mode settings on your Brother L2340 printer can help you manage its power consumption and performance. Here are the detailed steps to adjust the Sleep Mode settings:
- Access the Sleep Time Options: Start by pressing the "Menu" button on your printer. From the menu options, use the arrow keys to navigate to "General Setup." Once selected, you will see additional options, including "Ecology." Press "Ecology" and then choose "Sleep Time."
- Set the Idle Time: In this step, you can determine how long the printer should remain idle before it enters Sleep Mode. Use the numeric keys on the touchscreen or the dial pad to enter the desired number of minutes. You can set the idle time anywhere between 00 and 99 minutes.
- Confirm the Settings: After entering the preferred idle time, press the "OK" key to confirm the setting. You will see a confirmation message on the LCD screen, indicating that Sleep Mode is activated.
- Turn Off Sleep Mode (Optional): If you want to disable Sleep Mode entirely, you can do so by pressing the "Start" and "Options" keys simultaneously. Then, use the arrow keys to select "Off" for Sleep Mode. Press "OK" to confirm this change.
- Exit the Menu: Once you have adjusted the Sleep Mode settings to your preference, press the "Stop/Exit" key to exit the menu. Your changes will be saved, and the printer will now follow the new Sleep Mode settings.
By adjusting the Sleep Mode settings, you can control when your Brother L2340 printer enters Sleep Mode and conserves energy. Remember that if you disable Sleep Mode entirely, the printer will remain active even during periods of inactivity, which may increase power consumption. It is essential to find a balance that aligns with your printing needs and energy preferences.
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Update the Operating System
Updating the operating system on your computer or device is crucial to ensure smooth printing, especially when dealing with sleep mode issues. Here are the detailed steps to update your operating system, adapted from Brother's support website and other technical sources:
Step 1: Identify Your Operating System
Before initiating an update, it's essential to determine whether you're using a Windows or macOS (or other OS) system. This distinction is important as the update process varies between different operating systems.
Step 2: Check for Available Updates
Once you've identified your operating system, proceed to check for available updates. On Windows, you can typically do this by opening the Settings app and navigating to the "Update & Security" section. Here, you'll find options to check for updates and install any available ones. For macOS, you can use the System Preferences app and select "Software Update" to check for updates.
Step 3: Install Updates
After identifying and checking for updates, proceed to install them. It is recommended to back up your important data before proceeding with the installation. This will protect your data in case anything unexpected happens during the update process. Follow the on-screen instructions provided by your operating system to complete the installation.
Step 4: Restart Your Device
Once the updates are installed, restart your computer or device. This allows your system to implement the changes introduced by the updates and ensures that the updated software runs smoothly.
Step 5: Update Firmware (If Necessary)
In some cases, you may also need to update the firmware of your Brother machine. This is separate from updating your computer's operating system. To do this, download the Firmware Update Tool from the Brother support website and follow the instructions provided.
By following these steps, you can ensure that your operating system is up to date, which may help resolve issues related to waking your Brother L2340 printer from deep sleep mode. It's important to keep your operating system and firmware updated to maintain the compatibility and functionality of your printing setup.
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Check for error messages
If your Brother L2340 printer is in deep sleep mode and you are unable to wake it, there are a few things you can try. Firstly, check the machine's display for any error messages. Clear the error, if there is one, and try again. If there is no error message, check that there is paper in the tray.
If your printer is still not waking from sleep mode, you could try disabling sleep mode entirely. To do this, press 'Menu' on the touchscreen, then use the arrow keys to navigate to 'General Setup' and press it. Next, use the arrow keys to select 'Ecology', then press it. From there, you can adjust the 'Sleep Time' settings. You can set the length of time the machine will remain idle before entering sleep mode.
If you are still unable to wake your printer from deep sleep mode, you may need to turn the printer off and back on again. Once it is back on, send a print job while it is in ready mode.
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Check the machine's display
If your Brother L2340 printer is not waking up from deep sleep, there are a few things you can try. Firstly, check the machine's display for any error messages and clear them. The display should show \"Sleep\" when the machine is in sleep mode. If you are unable to print or scan wirelessly, ensure that both your Brother machine and your wireless router/access point are using the latest firmware. You can also try adjusting the Sleep Mode settings. To do this, press the "Menu" button and choose "General Setup" followed by "Ecology" and then "Sleep Time". Use the arrow keys to select your preferred settings and press "OK" to confirm. If none of these steps work, try turning the printer off and then on again, and send a print job while it is in ready mode.
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Frequently asked questions
Press the "Go" button to wake up the printer and put it in Ready mode.
You can adjust the Sleep Mode settings by following these steps: Press "Menu" and choose "General Setup", then "Ecology", then "Sleep Time". Enter the number of minutes the machine is idle before it enters Sleep Mode. Press the "Start" and "Options" keys simultaneously. Press the up or down arrow key to choose "Off". Press "OK", then press "Stop/Exit".
If your Brother L2340 printer is in Sleep Mode and does not receive any jobs for a certain length of time, it will automatically enter Deep Sleep mode. The length of time varies depending on your specific model and settings.
Try turning the printer off and then back on again. Then send a print job while it is in Ready mode.











































