Epson WF-7840 Series User Manual

Something is wrong with the network devices for Wi-Fi connection.
Solutions
Turn
o
the devices you want to connect to the network. Wait for about 10 seconds, and then turn on the
devices in the following order; wireless router, computer or smart device, and then printer. Move the
printer and computer or smart device closer to the wireless router to help with radio wave
communication, and then try to make network settings again.
Devices cannot receive signals from the wireless router because they are too far apart.
Solutions
Aer moving the computer or the smart device and the printer closer to the wireless router, turn o the
wireless router, and then turn it back on.
When changing the wireless router, the settings do not match the new router.
Solutions
Make the connection settings again so that they match the new wireless router.
& “When Replacing the Wireless Router” on page 263
The SSIDs connected from the computer or smart device and computer are dierent.
Solutions
When you are using multiple wireless routers at the same time or the wireless router has multiple SSIDs
and devices are connected to dierent SSIDs, you cannot connect to the wireless router.
Connect the computer or smart device to the same SSID as the printer.
Solving Problems > The Printer Does Not Work as Expected > Cannot Print
188

Epson WF-7840 Series Specifications

General

Print Resolution	4800 x 2400 dpi
Max Print Size	13" x 19"
Duplex Printing	Yes
Scanner Type	Flatbed, ADF
Scan Resolution	1200 x 2400 dpi
Connectivity	USB, Ethernet, Wi-Fi, Wi-Fi Direct
Display	4.3" Color Touchscreen
Category	Printer
Functions	Print, Copy, Scan, Fax
Maximum Paper Size	13" x 19"
Input Paper Capacity	250 sheets
ADF Capacity	50 sheets
Print Technology	PrecisionCore
Print Speed Black	25 ppm
Print Speed Color	12 ppm
Paper Capacity	250 sheets
Printing Technology	PrecisionCore
Mobile Printing	Apple AirPrint, Mopria Print Service, Epson Connect
Paper Sizes	A4, A5, Letter, Legal
Paper Capacity Maximum	500 sheets
Monthly Duty Cycle	50, 000 pages
Product Type	All-in-One Printer