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Epson WF-7840 Series User Manual

Epson WF-7840 Series
437 pages
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The image quality setting is low on the sender's fax machine.
Solutions
Ask the sender to send faxes at a higher quality.
Cannot Solve Problem
If you cannot solve the problem
aer
trying all of the solutions, contact Epson support.
If you cannot solve printing or copying problems, see the following related information.
Related Information
& “Cannot Solve Printing or Copying Problems” on page 259
Cannot Solve Printing or Copying Problems
Try the following problems in order starting at the top until you solve the problem.
Make sure you match the paper type loaded in the printer and the paper type set on the printer to the paper
type settings in the printer driver.
“Paper Size and Type Settings” on page 31
Use a higher quality setting on the control panel or the printer driver.
Reinstall the ink cartridges already installed in the printer.
Reinstalling the ink cartridges may clear clogging in the print head nozzles and allow the ink to ow smoothly.
However, because the ink is consumed when the ink cartridge is reinstalled, a message asking you to replace the
ink cartridge may be displayed depending on the amount of ink remaining.
“It is Time to Replace the Ink Cartridges” on page 229
Align the print head.
“Aligning the Print Head” on page 153
Run a nozzle check to see if the print head nozzles are clogged.
If there are missing segments in the nozzle check pattern, the nozzles may be clogged. Repeat head cleaning and
the nozzle check alternately 3 times and check if the clogging has cleared.
Note that print head cleaning uses some ink.
“Checking the Status of Consumables” on page 150
Turn o the printer, wait for at least 12 hours, and then check if the clogging has cleared.
If the problem is clogging, leaving the printer for a while without printing may solve the problem.
You can check the following items while the printer is
o.
Check that you are using genuine Epson ink cartridges.
Try to use genuine Epson ink cartridges. is product is designed to adjust colors based on the use of genuine
Epson ink cartridges. e use of non-genuine ink cartridges may cause print quality to decline.
“Ink Cartridge Codes” on page 293
Make sure that there are no paper fragments le inside the printer.
When you remove the paper, do not touch the translucent lm with your hand or the paper.
Solving Problems
>
Cannot Solve Problem
>
Cannot Solve Printing or Copying Problems
259

Table of Contents

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Epson WF-7840 Series Specifications

General IconGeneral
Print Resolution4800 x 2400 dpi
Max Print Size13" x 19"
Duplex PrintingYes
Scanner TypeFlatbed, ADF
Scan Resolution1200 x 2400 dpi
ConnectivityUSB, Ethernet, Wi-Fi, Wi-Fi Direct
Display4.3" Color Touchscreen
CategoryPrinter
FunctionsPrint, Copy, Scan, Fax
Maximum Paper Size13" x 19"
Input Paper Capacity250 sheets
ADF Capacity50 sheets
Print TechnologyPrecisionCore
Print Speed Black25 ppm
Print Speed Color12 ppm
Paper Capacity250 sheets
Printing TechnologyPrecisionCore
Mobile PrintingApple AirPrint, Mopria Print Service, Epson Connect
Paper SizesA4, A5, Letter, Legal
Paper Capacity Maximum500 sheets
Monthly Duty Cycle50, 000 pages
Product TypeAll-in-One Printer

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