Epson WorkForce Pro WF-7840
 | This model is compatible with the Epson Smart Panel app, which allows you to perform printer or scanner operations easily from iOS and Android devices. |
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- Top FAQs
- Cloud or Mobile
- Copy or Print
- Error Messages or Lights
- Fax
- Ink
- Memory Cards or External Devices
- Paper or Media
- Print Quality or Appearance
- Scan
- Software or Setup
- Wireless or Wired Connection
- Other
Select the questions to view the answers
- How do I replace the ink cartridges?
- How should I load envelopes?
- How do I connect my product to my wireless network using the product's control panel?
- How do I use my product's control panel to automatically send an email of a scanned item?
- I'm having trouble sending or receiving faxes. What should I do?
- How do I install the software for my product if I don't have the CD?
- How do I scan using my product's control panel?
- I see the message Printer is Offline when I try to print with a wireless connection in Windows. What should I do?
- Printing is slow or the printer stops printing when I try to print from Windows or my Mac. What should I do?
- How do I scan a document with Epson ScanSmart?
Select the questions to view the answers
Select the questions to view the answers
- Printing or scanning is slow over my wireless connection. What should I do?
- I can print with a wireless connection on my home network but not on a VPN (virtual private network). What should I do?
- How do I print labels in Microsoft Office?
- Printing is slow or the printer stops printing when I try to print from Windows or my Mac. What should I do?
- How do I set up my product for the fastest printing?
- My copies have incorrect or faint colors. What should I do?
- How do I copy a document or photo using my product's control panel?
- How do I print a borderless photo from Windows or my Mac?
- How do I print a multi-page document from Windows or my Mac so it stacks in the correct page order?
- I was able to print from Windows before with a USB connection, but now I can't. What should I do?
- I was able to print from my Mac before with a USB connection, but now I can't. What should I do?
- How do I set up my product to print only Black or Grayscale from Windows or my Mac?
- It takes a long time to copy a document. What should I do?
Select the questions to view the answers
- I see the message Filter Failure with rastertoescpII when I try to print from my Mac. What should I do?
- I see the message Unable to connect to network scanner. Check the scanner, network, and connection settings. What should I do?
- I see the message Printer is Offline when I try to print with an Ethernet connection in Windows. What should I do?
- I see the message Printer is Offline when I try to print with a wireless connection in Windows. What should I do?
- I see the message Printer is Offline when I try to print with a USB connection on my Mac. What should I do?
- I see the message Printer is Offline when I try to print with an Ethernet connection on my Mac. What should I do?
- I see the message Printer is Offline when I try to print with a wireless connection on my Mac. What should I do?
- I see the message Printer is Offline when I try to print with a USB connection in Windows. What should I do?
Select the questions to view the answers
- Can I use digital voicemail with my fax?
- Do I need to use a filter if I fax over a VoIP (Voice over Internet Protocol) line?
- I cannot access the fax settings on my product's control panel. What should I do?
- How many pages can I store in the fax memory?
- The fax header gets cut off when I send a fax. What should I do?
- How do I add a pause when I enter a fax number on the product's control panel?
- Do I need a filter if I'm faxing over a DSL?
- How do I send a fax from my product control panel?
- How do I restore my original fax settings?
- How do I confirm my fax was sent?
- The quality of my fax is poor. What should I do?
- I'm having trouble sending or receiving faxes. What should I do?
- Can I use a pre-paid calling card to send a fax?
- How do I create a header for my faxes?
- How do I send a fax using the Fax Utility on my Mac?
- How do I send a fax using the Fax Utility in Windows?
- How do I use an answering machine with my fax?
- When I send a handwritten fax, the recipient can't read the fax. What should I do?
- How do I save faxes to my Windows computer instead of printing them?
- How do I save faxes to my Mac instead of printing them?
- How do I change the baud rate or fax speed on my product?
- How can I know if there is a fax stored in the product?
- Will I lose faxes if the product is turned off?
Select the questions to view the answers
- How do I replace the ink cartridges?
- How do I print with black ink from Windows or my Mac when a color cartridge is expended?
- Can my product still print if an ink cartridge is expended or not installed?
- The color ink cartridge is expended even though I print in black only. Why does this happen?
- How do I know when an ink cartridge needs to be replaced?
- Why is Epson shipping initial ink cartridges with my product?
- What is my product doing after I install a new ink cartridge?
- Which functions are available on my product when an ink cartridge is expended or not installed?
Select the questions to view the answers
Select the questions to view the answers
- Can the product print on CDs and DVDs?
- My original does not feed from the ADF (Automatic Document Feeder). What should I do?
- I'm having paper feed problems. What should I do?
- Does the type of paper I use make a difference?
- How should I load envelopes?
- How do I know which paper or media type to select in my product's driver?
- How do I select the paper source in Windows?
- How do I create a custom paper size for my product in Windows?
- Which type of paper can I print on?
Select the questions to view the answers
- How do I reduce the appearance of red eyes in my photos?
- How do I change the font size of text when I print from software in Windows?
- Web pages don't print the way they appear on my monitor. What should I do?
- My printout has lines running through it. What should I do?
- My printout is grainy when I print from any application. What should I do?
- My printout has a slight slant. What should I do?
- My printout has incorrect colors. What should I do?
- My printout has incorrect margins. What should I do?
- The position, size, or margins of my copy are incorrect. What should I do?
- My printout has lines running through it when I make a copy using the ADF (Automatic Document Feeder). What should I do?
- My printout is blurry or smeared. What should I do?
- My printout contains incorrect characters. What should I do?
- My printout looks inverted, as if viewed in a mirror. What should I do?
- My product is printing blank pages. What should I do?
Select the questions to view the answers
- How do I decide which resolution to select when I scan from Epson Scan 2?
- Scanning is slow to start when I select the Scan to Network Folder/FTP option on my product's control panel. What should I do?
- How do I enlarge an image I scanned with Epson Scan 2?
- How do I scan from a smart device?
- How do I scan a document with Epson ScanSmart?
- I can't start Epson Scan 2. What should I do?
- My scanning software doesn't work properly in Windows or on my Mac. What should I do?
- How do I change the scan settings in Epson ScanSmart?
- How do I use my product's control panel to automatically send an email of a scanned item?
- I cannot scan over a network. What should I do?
- How do I attach a scanned image to an email with Epson ScanSmart?
- How do I scan using my product's control panel?
- How do I scan to a SharePoint server or cloud service?
- The quality of an image I scanned with Epson Scan 2 is poor. What should I do?
- How do I scan a document so I can edit the text in word processing software?
- Where do I place a legal-size document on my product to scan it?
- I see a blank Scanner Settings window when I start Epson Scan 2. What should I do?
Select the questions to view the answers
- How do I turn off the pop-up messages from Epson Event Manager in Windows 10?
- How do I obtain the latest product software for Windows or my Mac?
- How do I change the Power Off and Sleep Timer settings?
- How do I uninstall the Epson printer and Epson Scan 2 software in Windows or on my Mac?
- How do I restore my product's default settings?
- How do I enable automatic double-sided printing for my product in Windows or on my Mac?
- How do I install the software for my product if I don't have the CD?
- How do I set up my product for wireless printing in Windows or on my Mac?
- How do I get a replacement CD for my product?
- The option for 2-Sided Printing (Windows) or Two-sided Printing Settings (Mac) is gray or not available. What should I do?
- I see the message Unable to connect to the server. Please try again later. when I try to install the Drivers and Utilities Combo Package Installer. What should I do?
- Does Epson make drivers for Linux?
Select the questions to view the answers
- Can I set up my product for both a USB and network connection?
- How do I add my product as an IP printer on my Mac?
- Where can I find the IP address of my router?
- Where can I get my wireless password for Apple AirPort Extreme or Express?
- How do I find my SSID and network password?
- What are the port numbers for Epson network printers (wired and wireless)?
- I can't get Epson Status Monitor to work over my wireless network. What should I do?
- How do I connect my product with a Wi-Fi Direct connection?
- How do I connect my product to my wireless network using the product's control panel?
- How do I check my product’s network status?
- How do I connect my WPS-enabled wireless router to my product?
- How do I change from a USB connection to a Wi-Fi connection?
- How do I change from a Wi-Fi connection to a wired network connection?
- I can't print from Windows with a wireless connection since I received an exchange product from Epson. What should I do?
- I tried to install the product on my Mac with a wireless connection, but the installation failed. What should I do?
- I was able to print from my Mac before with a wireless connection, but now I can't. What should I do?
- I was able to print from Windows before with an Ethernet connection, but now I can't. What should I do?
- I can't print from my Mac with a wireless connection since I received an exchange product from Epson. What should I do?
- I was able to print from Windows before with a wireless connection, but now I can't. What should I do?
- I tried to install the product's software for an Ethernet connection but cannot complete the installation in Windows or on my Mac. What should I do?
- I was able to print from my Mac before with an Ethernet connection, but now I can't. What should I do?
- I tried to install the product in Windows with a wireless connection, but the installation failed. What should I do?
- I can't print from Windows with a wireless connection after I replaced my router. What should I do?
- I can't print from my Mac with a wireless connection after I replaced my router. What should I do?
- What security measures does Epson recommend for its network products?
Select the questions to view the answers
- My product will not wake up when I try to print with a wireless connection. What should I do?
- Why doesn't Epson include a USB or Ethernet cable in the box with the product?
- How should I transport or store my product?
- How do I determine the number of pages the product has printed?
- Does Epson have a program where I can donate my working electronic equipment?
For step-by-step guided assistance, please select a link below.
Problems with Printing Wirelessly from a Mac?
Try this step-by-step interactive guide if you see a Printer Offline message and are having problems printing from a Mac on a wireless network.
Problems with Printing Wirelessly from Winodws?
Try this step-by-step interactive guide if you see a Printer Offline message and are having problems printing from Windows on a wireless network.
Error Codes on Printer Control Panel
Try this step-by-step interactive guide to clear error messages that appear on the control panel.
Improving Print Quality
Try this step-by-step interactive guide if your printout appears blurry, smeared, faint, grainy, has gaps or white lines, or has incorrect colors.
Start Here - Installation Guide
PDF
This document will assist you with product unpacking, installation and setup.
User's Guide
HTML
PDF
This document contains an overview of the product, specifications, basic and in-depth usage instructions, and information on using options.
Notices and Warranty
PDF
This document contains system requirements, safety information, compliance statements, specifications, and your Epson America, Inc. Limited Warranty.
Safety Data Sheets
Safety Data Sheets provide important information about ink cartridge composition, precautions for safe handling and use, regulatory considerations, and more.
-
Part Number: T812120-S
Black | PDF -
Part Number: T812220-S
Cyan | PDF -
Part Number: T812320-S
Magenta | PDF -
Part Number: T812420-S
Yellow | PDF -
Part Number: T812XL120-S
Black XL | PDF -
Part Number: T812XL220-S
Cyan XL | PDF -
Part Number: T812XL320-S
Magenta XL | PDF -
Part Number: T812XL420-S
Yellow XL | PDF -
Part Number: T812XXL120-S
Black XXL | PDF
Extended Service Plan
Protect your Epson product beyond the standard warranty period with an Epson extended service plan.
View Service PlanService Center Locator
For products in warranty, please contact Technical Support. If your product is out of warranty, find a service center.
Find a LocationEmail Epson Support
If you are unable to find an answer on our web site, you can email your question to Epson Support.
Email UsContact Us
Phone :
(562) 276-4382
Hours :
Monday – Friday 7 am – 4 pm (PT)
Mail :
3131 Katella Ave.
Los Alamitos, CA 90720
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