Epson ET-3750U - Printer Manual

Epson ET-3750U - Printer Manual

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Epson ET-3750U - Printer Manual

Before using this product, make sure you read these instructions and the safety instructions in the online User's Guide.

Note: As part of the ReadyPrint program, Epson monitors ink usage remotely to provide you with additional ink before you run out of it. The product must be connected to the internet to function and monitor ink usage.


Note: Do not open the ink bottles until you are ready to fill the ink tanks. The ink bottles are vacuum packed to maintain reliability.

  1. Remove all protective materials from the product.
    Unpack - Step 1 - Remove all protective materials
  2. Lift up the scanner unit. Remove all protective materials from inside the product.
    Unpack - Step 2 - Lift up the scanner unit

    Do not touch the flat white cable or the ink tubes and their translucent cover.

Fill ink tanks

Keep the ink bottles out of the reach of children and do not drink the ink.

This product requires careful handling of ink. If ink spills, wipe it off immediately with a damp towel to avoid permanent stains.
If ink gets on your clothes or belongings, it may not come off.


  • Use only the Epson 570 ink provided to you under the ReadyPrint program.
  • Use the ink bottles included with the printer to set up the product. Part of the ink will be used to charge the print head. These bottles may print fewer pages compared with replacement ink bottles.
  1. Open the ink tank cover, then open the cap for the black ink tank.
    Fill ink tanks - Step 1 - Open the ink tank cover
  2. Unpack the black (BK) ink bottle. Hold the ink bottle upright and slowly turn the bottle cap to remove it.
    Fill ink tanks - Step 2 - Unpack the ink bottle

    Do not shake or squeeze the ink bottles. Do not touch the top of the ink bottle after its cap is removed.
  3. Insert the ink bottle into the filling port, as shown below.
    Fill ink tanks - Step 3 - Fill the tank
    Note: Refer to the color-coded sticker to identify the color of each tank. Do not force the bottles into position; they are keyed for each color.
  4. Wait for the ink to fill the tank. Do not squeeze the bottle. Ink flows into the tank and stops automatically when the ink is filled to the upper line.
    Fill ink tanks - Step 4
    Note: If ink does not flow from the bottle, lift and reinsert the bottle.
  5. When the ink tank is full, remove the ink bottle and replace the bottle cap. Place the remaining ink aside; you will need it later.

    Note: Do not leave the ink bottle inserted; otherwise the bottle may be damaged or ink may leak.
  6. Close the ink tank cap.
    Fill ink tanks - Step 5 - Close the ink tank cap
  7. Repeat the previous steps for the other colors.

    After setup, periodically inspect the ink level to ensure it is not below the lowest line on the tank. Prolonged use when ink is below the lowest line could damage the product. See the online User's Guide for refilling instructions.
  8. Close the ink tank cover and then the scanner unit.
    Fill ink tanks - Step 6 - Close the scanner unit
  9. Connect the power cord to the back of the product and to an electrical outlet.
    Fill ink tanks - Step 7 - Power up

    Do not connect to your computer yet.
  10. Raise the control panel, then press the power button to turn on the product.
    Fill ink tanks - Step 8 - Turn on
    Note: If an error message appears, turn off the product and check that no protective material has been left inside the product.
  11. Press or to select your language on the LCD screen, then press the OK button.
    Note: You can change these settings later using the product's control panel. For more information, see the online User's Guide.
    Follow steps 12 and 13 to continue ink charging.
  12. When the message to see the Start Here sheet appears on the LCD screen. Press the OK button, then press and hold the help button for 3 seconds.
  13. When the ink confirmation message appears on the LCD screen, select Done to start charging the ink. Ink charging takes approximately 10 minutes. A message appears when ink charging is complete. Press the OK button to continue.

    Do not turn off the product, raise the scanner unit, or load paper while the product is charging or you'll waste ink.
    Fill ink tanks - Prohibited moves
    Note: The included ink bottles are designed for reliable printer setup and cannot be resold. After setup, the remaining ink is available for printing.
  14. To complete filling the ink tanks, repeat steps 1 through 7 using the remaining ink in the bottles.
    Note: Replace the bottle cap before disposing of the bottles.
  15. Close the ink tank cover and scanner unit.
  16. Select Next and follow the on-screen instructions to reset the ink levels.
  17. Follow the on-screen instructions to adjust the print quality. Press the OK button to continue.


  • You need to load paper before you can adjust the print quality. See "Load paper" on the back of this sheet for details.
  • You can change these settings later using the product's control panel. For more information, see the online User's Guide.

Load paper

See the online User's Guide for information about loading capacity, available paper types and sizes, loading envelopes, and using the ADF.

  1. Make sure the product is not charging ink, and then open the front of the paper cassette and pull out the paper cassette.
    Load paper - Step 1 - Pull out the paper cassette
  2. Slide the side edge guides all the way out.
    Load paper - Step 2
  3. Insert paper with the glossy or printable side down.
    Load paper - Step 3 - Insert the paper
    Note: Make sure the paper is loaded against the front edge guide and not sticking out from the end of the cassette.
  4. Slide the side edge guides against the paper, but not too tightly. Close the front of the cassette.
    Load paper - Step 4
  5. Keep the cassette flat as you insert it all the way.
  6. Pull out the output tray
    Load paper - Step 5 - Pull out the output tray
  7. Select the paper settings on the product's control panel.

Install software

Note: An Internet connection is required to obtain the product software.

  1. Make sure the product is NOT CONNECTED to your computer.
    Install software - Step 1
    Windows®: If you see a Found New Hardware screen, click Cancel and disconnect the USB cable.
  2. Download and run your product's software package:
  3. Follow the instructions on the computer screen to run the setup program.
  4. When you see the Select Your Connection screen, select one of the following:
  • Wireless connection
    In most cases, the software installer automatically attempts to set up your wireless connection. If setup is unsuccessful, you may need to enter your network name (SSID) and password.
  • Direct USB connection
    Make sure you have a USB cable (not included).
  • Wired network connection
    Make sure you have an Ethernet cable (not included).

Mobile and voice-activated printing

  • Print directly from your smartphone or tablet using iOS or Android™ with Epson iPrint™. Simply connect your printer and device to the same network and tap the action icon to select the print option.
  • Print directly from your Android (v4.4 or later) device*. Simply connect your printer and device to the same network and tap the menu icon to select the print option.
  • Print from wherever you are, next to your printer or remotely, with Epson Connect™. Learn more at
  • Use voice-activated assistants to print a variety of creative and everyday items from your Epson® product. Simply add your product to an Epson Connect account, then link the account to a voice-activated assistant. See for more information.

* May require the Epson Print Enabler or Mopria Print Service app from Google Play™.

Any problems

Network setup was unsuccessful

  • Make sure you select the right network name (SSID).
  • Restart your router (turn it off and then on), then try to connect to it again.
  • The printer can only connect to a network that supports 2.4 GHz connections. If your router offers both 2.4 GHz and 5 GHz connections, make sure 2.4 GHz is enabled.
  • If you see a firewall alert message, click Unblock or Allow to let setup continue.
  • If your network has security enabled, make sure you enter your network password (WEP key or WPA passphrase) correctly. Be sure to enter your password in the correct case.
  • Print a network connection report to identify network problems and solutions. See your online User's Guide for instructions.

There are lines or incorrect colors in my printouts

Run a nozzle check to see if there are any gaps in the printout. Then clean the print head, if necessary. See the online User's Guide for more information.

The product's screen is dark

Make sure your product is turned on, and press any button to wake it from sleep mode.

Any questions

User's Guide

Windows: Click the icon on your desktop or Apps screen to access the online User's Guide.

Mac: Click the icon in Applications/Epson Software/Guide to access the online User's Guide.

If you don't have a User's Guide icon, go to the Epson website, as described below.


Visit to view support videos.

ReadyPrint subscription program technical support

Visit to download drivers, view manuals, get FAQs, or contact Epson.

Call 800-879-3776, 6 am to 8 pm Pacific Time, Monday through Friday, and 7 am to 4 pm, Pacific Time, Saturday. Days and hours of support are subject to change without notice. Toll or long distance charges may apply.


Epson offers a recycling program for end of life your ink bottles. Please go to for information on how to return your ink bottles for proper disposal.


Epson EcoTank ET-3750U Wireless Setup using the Control Panel Video

Documents / Resources


Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download Epson ET-3750U - Printer Manual


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