Epson WF-7840 Series User Manual

Cannot Access Web Cong
The IP address is not assigned to the printer.
A valid IP address may not be assigned to the printer. Congure the IP address using the printer’s
control panel. You can conrm the current setting information with a network status sheet or from
the printer’s control panel.
Web browser does not support the Encryption Strength for SSL/TLS.
SSL/TLS has the Encryption Strength. You can open Web Cong by using a web browser that
supports bulk encryptions as indicated below. Check you are using the a supported browser.
❏ 80bit: AES256/AES128/3DES
❏ 112bit: AES256/AES128/3DES
❏ 128bit: AES256/AES128
❏ 192bit: AES256
❏ 256bit: AES256
CA-signed Certicate is expired.
If there is a problem with the expiration date of the certicate, "e certicate has expired" is
displayed when connecting to Web
Cong
with SSL/TLS communication (https). If the message
appears before its expiration date, make sure that the printer's date is
congured
correctly.
The common name of the certicate and the printer do not match.
If the common name of the certicate and the printer do not match, the message "e name of the
security certicate does not match···" is displayed when accessing Web Cong using SSL/TLS
communication (https). is happens because the following IP addresses do not match.
❏
e
printer's IP address entered to common name for creating a Self-signed
Certicate
or CSR
❏ IP address entered to web browser when running Web Cong
For Self-signed Certicate, update the certicate.
For CA-signed Certicate, take the certicate again for the printer.
The proxy server setting of local address is not set to web browser.
When the printer is set to use a proxy server, congure the web browser not to connect to the local
address via the proxy server.
❏ Windows:
Select Control Panel > Network and Internet > Internet Options > Connections > LAN settings
> Proxy server, and then
congure
not to use the proxy server for LAN (local addresses).
❏ Mac OS:
Select System Preferences > Network > Advanced > Proxies, and then register the local address
for Bypass proxy settings for these Hosts & Domains.
Example:
192.168.1.*: Local address 192.168.1.XXX, subnet mask 255.255.255.0
192.168.*.*: Local address 192.168.XXX.XXX, subnet mask 255.255.0.0
Administrator Information > Settings to Use the Printer > Problems when Making Settings
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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