Epson EcoTank ET-3850 all-in-one printer
- Category
- Printers
- Model number
- ET-3850
- Region
- United States and Canada
- Verified
- Printer error
- Paper out in XX.
- Paper Setup Auto Display is set to Off
- Borderless printing ink pad nearing the end of its service life
- Borderless printing ink pad has reached the end of its service life
- Update the root certificate
- IP address and subnet mask combination invalid
- Check that the printer driver is installed
- Recovery mode
- Product does not turn on or off
- Noise after filling the ink
- Paper does not feed or several sheets feed at once
- Originals do not feed from the automatic document feeder
- Paper does not eject fully or comes out wrinkled
- White or dark lines across the printout
- How to run a nozzle check from the control panel
- How to clean the print head from the control panel
- How to run a Power Cleaning from the control panel
- How to align the print head from the control panel
- How to refill the ink tanks
- How to clear a paper jam
- How to run a product check
- How to restore control panel settings to their defaults
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Error codes
| Code | Meaning | Checks |
|---|---|---|
| Printer error | The product reports a general printer error. | Checks |
| Paper out in XX. | The specified paper cassette is out of paper. | Checks |
| Paper Setup Auto Display is set to Off | The Paper Setup Auto Display setting is off. | Checks |
| Borderless printing ink pad nearing the end of its service life | The borderless printing ink pad is nearing the end of its service life. | Checks |
| Borderless printing ink pad has reached the end of its service life | The borderless printing ink pad has reached the end of its service life. | Checks |
| Update the root certificate | The root certificate must be updated to use cloud services. | Checks |
| IP address and subnet mask combination invalid | The IP address and subnet mask combination is invalid. | Checks |
| Check that the printer driver is installed | The printer driver or its port setting needs checking. | Checks |
| Recovery mode | An error occurred during a firmware update. | Checks |
Printer error
Printer error. Turn on the printer again. See your documentation for more details. The product reports a general printer error.
- Turn the product off, then on again.
- If the error continues, check for a paper jam. See Clear a paper jam.
Source Source: Solving Problems: Product Status Messages, p. 218
Paper out in XX.
Paper out in XX. The specified paper cassette is out of paper.
- Load paper in the specified cassette.
Source Source: Solving Problems: Product Status Messages, p. 218
Paper Setup Auto Display is set to Off
Paper Setup Auto Display is set to Off. Some features may not be available. The Paper Setup Auto Display setting is off.
- Turn on the Paper Setup Auto Display setting.
Source Source: Solving Problems: Product Status Messages, p. 218
Borderless printing ink pad nearing the end of its service life
The printer's borderless printing ink pad is nearing the end of its service life. It is not a user-replaceable part. Please contact Epson support. The borderless printing ink pad is nearing the end of its service life.
Source Source: Solving Problems: Product Status Messages, p. 218
Borderless printing ink pad has reached the end of its service life
The printer's borderless printing ink pad has reached the end of its service life. It is not a user-replaceable part. Please contact Epson support. The borderless printing ink pad has reached the end of its service life.
Source Source: Solving Problems: Product Status Messages, p. 218
Update the root certificate
To use cloud services, update the root certificate from the Epson Web Config utility. The root certificate must be updated to use cloud services.
- Open the product's built-in Web Config utility and update the root certificate.
Source Source: Solving Problems: Product Status Messages, p. 218
IP address and subnet mask combination invalid
The combination of the IP address and the subnet mask is invalid. See your documentation for more details. The IP address and subnet mask combination is invalid.
- Check the network solutions in the User's Guide.
Source Source: Solving Problems: Product Status Messages, p. 218
Check that the printer driver is installed
Check that the printer driver is installed on the computer and that the port settings for the printer are correct. The printer driver or its port setting needs checking.
- Click Print Queue on the printer driver's Maintenance tab.
- Make sure the printer port is selected correctly in Property > Port from the Printer menu: USBXXX for a USB connection or EpsonNet Print Port for a network connection.
Source Source: Solving Problems: Product Status Messages, p. 219
Recovery mode
Recovery mode, Update Firmware. An error occurred during a firmware update.
- Connect the product with a USB cable and try updating the firmware again.
Source Source: Solving Problems: Product Status Messages, p. 219
Problems
- Product does not turn on or off2 causes in the manual. First: the power cord is loose, or the power button was not held long enough.
- Noise after filling the ink2 causes in the manual. First: the product charges its print head the first time the tanks are filled. The power light flashes until charging finishes; turning the product off earlier can make it charge improperly and use excess ink the next time.
- Paper does not feed or several sheets feed at once5 causes in the manual. First: the cassette or paper settings are wrong.
- Originals do not feed from the automatic document feeder2 causes in the manual. First: the ADF icon is not lit on the Copy or Scan screen.
- Paper does not eject fully or comes out wrinkled3 causes in the manual. First: the wrong paper size is set, so the paper does not eject fully.
- White or dark lines across the printout6 causes in the manual. First: print head nozzles are clogged.
How-to
- How to run a nozzle check from the control panelWhen printouts are light or banded, to see whether the print head nozzles are clogged before cleaning.
- How to clean the print head from the control panelWhen the nozzle check pattern has gaps. Cleaning uses ink, so clean only when print quality declines.
- How to run a Power Cleaning from the control panelWhen white or dark lines or missing nozzles remain after cleaning the print head several times.
- How to align the print head from the control panelWhen printouts are grainy or blurry, vertical lines are misaligned, or dark or light horizontal bands appear.
- How to refill the ink tanksWhen the ink level is below the lower line on a tank. Fill the tank to the upper line.
- How to clear a paper jamWhen the LCD screen reports paper jammed in the product.
- How to run a product checkTo find out whether the product itself is working when printing from a computer fails.
- How to restore control panel settings to their defaultsWhen a control panel, network, copy or scan setting causes a problem.
Maintenance
| Task | Source |
|---|---|
| Refill an ink tank when its level is below the lower line | Source: Refilling Ink and Replacing the Maintenance Box, p. 164 |
| Replace the maintenance box when the LCD screen asks for it; a full box stops printing and head cleaning | Source: Refilling Ink and Replacing the Maintenance Box: Maintenance Box Replacement, p. 179 |
| Run a nozzle check when print quality declines | Source: Adjusting Print Quality: Print Head Maintenance, p. 181 |
| Wait at least 12 hours after a Power Cleaning before running another | Source: Adjusting Print Quality: Power Cleaning, p. 193 |
Cartridges and ink
| Colour | Part number | Yield | Applies to | Source |
|---|---|---|---|---|
| Black | 502120 | – | All listed numbers | Source: Refilling Ink and Replacing the Maintenance Box: Ink Bottle and Maintenance Box Part Numbers, p. 173 |
| Cyan | 502220 | – | All listed numbers | Source: Refilling Ink and Replacing the Maintenance Box: Ink Bottle and Maintenance Box Part Numbers, p. 173 |
| Magenta | 502320 | – | All listed numbers | Source: Refilling Ink and Replacing the Maintenance Box: Ink Bottle and Maintenance Box Part Numbers, p. 173 |
| Yellow | 502420 | – | All listed numbers | Source: Refilling Ink and Replacing the Maintenance Box: Ink Bottle and Maintenance Box Part Numbers, p. 173 |
| Maintenance box | T04D100 | – | All listed numbers | Source: Refilling Ink and Replacing the Maintenance Box: Ink Bottle and Maintenance Box Part Numbers, p. 173 |
Specifications
Ink tank all-in-one printer with a paper cassette, an automatic document feeder (ADF), a flatbed scanner, a touch LCD control panel and a user-replaceable maintenance box that collects surplus ink. Ink goes into four tanks (black, cyan, magenta, yellow) from bottles. Source: Refilling Ink and Replacing the Maintenance Box: Maintenance Box Replacement, pp. 179-180
The LCD screen shows text messages rather than numbered codes. The Product Status Messages table lists nine of them, including two borderless printing ink pad messages that call for Epson support. The printer estimates ink levels by monitoring usage, so the tank windows are the reliable check. Source: Solving Problems: Product Status Messages, pp. 218-219
| Dimensions, stored (W x D x H) | 14.8 x 13.7 x 9.1 in (375 x 347 x 231 mm) | Source: Technical Specifications: Dimension Specifications, pp. 269-270 |
|---|---|---|
| Dimensions, printing (W x D x H) | 16.4 x 19.8 x 10 in (417 x 503 x 255 mm) | Source: Technical Specifications: Dimension Specifications, pp. 269-270 |
| Weight | 14.8 lb (6.7 kg) without ink or power cord | Source: Technical Specifications: Dimension Specifications, p. 270 |
| Power supply | 100 to 240 V, 50/60 Hz; ready mode about 5.3 W, sleep mode about 0.9 W, power off mode about 0.2 W | Source: Technical Specifications: Electrical Specifications, p. 270 |
| Operating temperature and humidity | 50 to 95 °F (10 to 35 °C), 20 to 80% RH without condensation | Source: Technical Specifications: Environmental Specifications, p. 270 |
| Ink storage | -4 to 104 °F (-20 to 40 °C), 1 month at 104 °F (40 °C). Ink freezes at 5 °F (-15 °C) and is usable after about 2 hours at 77 °F (25 °C). | Source: Technical Specifications: Ink Specifications, p. 269 |
| Wi-Fi and Ethernet | IEEE802.11 b/g/n on 2.4 GHz with WPA3-SAE support; Ethernet IEEE802.3i (10BASE-T) | Source: Technical Specifications: Network Interface Specifications, p. 271 |
Recalls
No exact-model match for ET-3850 in the U.S. Consumer Product Safety Commission recall database, checked . Recalls can name model families, so also check current recalls for Epson.
Service contact
Epson Support: (562) 276-4382, epson.com/support. United States; Canada (905) 709-3839. 6 AM to 8 PM Pacific Time Monday to Friday and 7 AM to 4 PM Saturday. Source: Solving Problems: Where to Get Help, pp. 261-262
Sources
- User's Guide, ET-3850. Epson America, Inc. Document CPD-60203, revision CPD-60203R1, 283 pages, en-US. files.support.epson.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.
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