
The Brother HL-3170CDW printer has a Sleep Time setting that reduces power consumption by turning off the fuser when the machine is idle. The machine will wake up and start printing when it receives a print job. You can adjust the Sleep Time setting by pressing the Up or Down arrow key to choose Sleep Time. However, some users have reported issues with the printer not waking up from Deep Sleep Mode to print on a Mac. Suggested solutions include updating the printer firmware and installing the printer using IPP instead of Bonjour.
| Characteristics | Values |
|---|---|
| Sleep Time Setting | Reduces power consumption |
| Sleep Mode | Acts as though it were turned off |
| Waking Up | Starts printing when it receives a print job |
| Idle Time | Can choose how long the machine must be idle before it goes into Sleep mode |
| Reset Timer | When the machine receives a print file or document, the timer will be reset |
| LCD Display | "Sleep" will be displayed when the machine is in Sleep mode |
| Firmware | Ensure the latest firmware is installed on the Brother machine and wireless router/access point |
| Deep Sleep Mode | If the machine does not receive any jobs for a certain length of time, it will enter Deep Sleep mode, which uses less power than Sleep mode |
| Troubleshooting | Check for network connectivity issues, firewall settings, and try rebooting the computer, router, and printer |
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What You'll Learn

Troubleshooting Deep Sleep Mode
Firstly, it is important to understand the difference between Sleep Mode and Deep Sleep Mode. Sleep Mode (or Power Save Mode) is a setting that reduces power consumption by turning off the fuser inside the machine when it is idle. The machine will automatically enter Sleep Mode after a certain period of inactivity, which you can adjust through the Sleep Time setting. When in Sleep Mode, the LCD will display "Sleep", and the machine will wake up and start printing when it receives a print job.
Deep Sleep Mode, on the other hand, is a state the printer enters when it has been in Sleep Mode for a prolonged period without receiving any jobs. The length of time before entering Deep Sleep Mode varies depending on your specific model and settings. Deep Sleep Mode uses even less power than Sleep Mode, and it cannot be disabled.
If your Brother HL3170 printer is stuck in Deep Sleep Mode and will not print, there are several troubleshooting steps you can try:
- Check for error messages or codes on the display. If there are any, clear them and try printing again.
- Ensure there is paper in the tray.
- Verify the IP address of your printer. If it is invalid or not recognised by your network, follow the steps outlined by Brother Support to add a Standard TCP/IP Port and configure the correct IP address.
- Update the printer firmware to the latest version.
- If you are still experiencing issues, try rebooting your computer, the printer, and your router.
- Check for network connectivity issues by attempting to print from another network-connected computer. If the problem persists, refer to Brother Support's recommendations for resolving constant network connectivity loss.
- As a last resort, uninstall and reinstall the Brother software, using the "Full Driver and Software Package" from the Brother website.
By following these steps, you should be able to resolve issues with your Brother HL3170 printer being stuck in Deep Sleep Mode.
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Adjusting Sleep Time settings
The Sleep Time setting on the Brother HL3170 printer can reduce power consumption by turning off the fuser when the machine is idle. When in Sleep mode, the machine will act as though it is turned off, but it will wake up and start printing when it receives a print job. You can choose how long the machine must be idle before it goes into Sleep mode.
To adjust the Sleep Time setting, follow these steps:
- Press "Menu" and choose "General Setup" => "Ecology" => "Sleep Time".
- Use the keys on the dial pad to enter the number of minutes the machine should be idle before it enters Sleep Mode. You can enter any number between 00 and 99.
- Press the "START" and "OPTIONS" keys simultaneously. The LCD will read "Sleep Mode: On."
- Press the "UP" or "DOWN" arrow key to choose "Off".
- Press "OK".
- Press the "STOP/EXIT" key to return to the Top page in the FAQs & Troubleshooting section.
If you are unable to print after the machine has entered Sleep mode, try the following:
- Check if there is paper in the tray.
- Check the machine's display or LEDs for any error messages and clear them.
- Find your Brother machine's IP address and check if it is valid for your network.
- Install the printer using IPP instead of Bonjour.
- Update the printer firmware.
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Updating printer firmware
To wake the Brother HL-3170 from sleep, you can send a print job to the machine. The printer will then wake up and start printing.
Now, here is a guide on how to update your Brother HL-3170 printer's firmware:
Step 1: Check your machine's current firmware version
Before updating your printer's firmware, it is a good idea to check what version your machine is currently running. This way, you can confirm that the update was successful.
Step 2: Prepare your machine for the update
Make sure that your Brother HL-3170 printer is turned on and connected to your computer or network.
- If you are connecting via USB, ensure the cable is directly connected to your machine and computer.
- For wired network users, confirm that the network cable is connected to the machine and the router.
- Wireless network users should check that their computer is connected to the same wireless network as the printer.
You may also need to temporarily disable any anti-virus or firewall software.
Step 3: Download the Firmware Update Tool
Visit the Brother support website to download the Firmware Update Tool. You may need to log in with admin rights to do this.
Step 4: Run the Firmware Update Tool
Double-click the installer package icon to start the update process. Follow the on-screen instructions and enter your password if prompted.
Step 5: Wait for the update to complete
The firmware update process can take up to 15 minutes. Do not turn off your printer or computer during this time. Once the update is complete, you may need to click "Continue" to finalise the process.
Troubleshooting
If you are unable to update the firmware, you can locate an Authorised Service Centre in your area for additional support. It is also recommended to read the installation notes on the download page before running the Firmware Update Tool.
Additionally, if you are experiencing issues with wireless printing or scanning, ensure that your machine and wireless router/access point are using the latest firmware.
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Checking for network connectivity issues
If you are experiencing network connectivity issues with your Brother HL-3170 printer, there are several troubleshooting steps you can take to try and resolve the problem.
Firstly, check that your printer is connected to the same wireless network as your computer. You can do this by printing a WLAN or Network Configuration Report. To print the WLAN report, navigate to "Print Reports" on your Brother Printer (found in Settings or Menu), choose "WLAN Report," and select the appropriate print option. If the status reads "Connection: OK", the printer is connected to the wireless network. If the connection status reads "Failed," you will receive an error code, which you can use to identify and address the specific issue.
If the printer is connected to the wireless network but your computer still cannot see it, check that the IP addresses of your computer and printer are compatible. You can find this information on the Network Configuration Report. If they are not compatible, you may need to change the settings on your computer to match the printer's settings.
If you are still experiencing issues, try restarting your printer, router, and computer. Ensure that your Wi-Fi is on the 2.4 GHz band and that your printer is within range of the router. Double-check that you have entered the correct network name (SSID) and password on the printer. You can also try resetting the network settings on your printer to the factory default.
If the issue persists, it may be related to your firewall settings. Try disabling the Windows Firewall or any other security applications that may be blocking your printer's communication.
If you continue to experience repeated network connectivity loss, you may need to uninstall and reinstall the Brother software. You can also refer to Brother's "Recommended Settings to Resolve Constant Network Connectivity Loss" for additional troubleshooting steps.
If none of these steps resolve the issue, you may need to contact Brother's customer support for further assistance.
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Reinstalling the MFL-Pro Suite
If you are experiencing issues with your Brother HL3170 printer, reinstalling the MFL-Pro Suite may be a good solution. Here is a step-by-step guide on how to do this:
Firstly, you will need to uninstall the Brother software. On your computer, click on 'Brother Utilities'. If this does not work, go to the next step. Select your printer model from the dropdown list, then click on 'Tools' and 'Uninstall'. You may be asked to confirm the uninstallation; click 'OK' and then 'Finish'.
Now, you are ready to install the MFL-Pro Suite. You can do this by using the 'Full Driver and Software Package', which can be downloaded from the Brother website (https://support.brother.com). Follow the installation instructions on the website, and you will be able to reinstall the MFL-Pro Suite. Alternatively, if you have a compatible CD for your operating system, you can use this to install the MFL-Pro suite software.
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