User manual - XJM255S_WirelessGuide_English
43
Check the following points whenever you are having problems with a wireless LAN connection.
Wireless LAN Connection between the Projector and a 
Computer
Wireless LAN Connection Troubleshooting
Problem Cause and Required Action
[Reconnect] remains on 
the Wireless Connection 
3 window and the 
computer won’t connect 
to the projector.
z If any other wireless LAN utility besides Wireless Connection 3 is running on the 
computer, close it.
z If the projector and computer are far away from each other or if there is a wall or 
some other physical impediment between them, move them closer and/or remove 
the impediment.
z If a nearby microwave oven, Bluetooth device, or other device is interfering with the 
wireless LAN signal, relocate the interfering device.
z If the projector is off, turn it on.
z If the projector does not have its wireless adapter connected, connect it (page 12).
z If the computer’s wireless LAN function is disabled, enable it.
z Check to make sure that the computer’s wireless LAN function (built-in or external 
wireless adapter) satisfies the required “Wireless LAN” conditions under “Minimum 
System Requirements” (page 9). Connection will not be possible if these conditions 
are not satisfied.
The wireless LAN 
connection between the 
projector and computer 
keeps dropping.
z If any other wireless LAN utility besides Wireless Connection 3 is running on the 
computer, close it.
z If the projector and computer are far away from each other or if there is a wall or 
some other physical impediment between them, move them closer and/or remove 
the impediment.
z If a nearby microwave oven, Bluetooth device, or other device is interfering with the 
wireless LAN signal, relocate the interfering device.
Problem Cause and Required Action Refer to:
I can establish a wireless 
LAN connection between 
the projector and 
computer, but the 
computer screen 
contents won’t project 
from the projector.
z On the projector, press the [INPUT] key and make sure 
that “USB” is selected as the input source.
“To perform wireless 
projection” (page 13)
z If computer display contents won’t project while 
“USB” is selected as the input source, click the   
button on the computer’s Wireless Connection 3 
window.
“Starting and Stopping 
Projection from a Computer 
Connected via Wireless 
LAN Connection” (page 26)
z If the projection image has been frozen or cut off by 
pressing the [FREEZE] or [BLANK] key on the 
projector, press the [ESC] key to cancel the freeze/
blank operation.
User’s Guide 
(UsersGuide_English.pdf)
Projection image 
switching is slow.
z Check what is selected for the projector’s “Projection 
Setting” item. If “High-resolution” is selected, change 
the setting to “High-speed”.
“To select display speed 
priority or resolution priority 
for projection” (page 28)
z If your computer is running Windows Vista or 
Windows 7, disable Windows Aero
TM
.
The user name does not 
appear when I start 
projecting from a 
computer.
z Make sure that “On” is selected for the “Show User 
Name Display” item on the System Admin page 
“Setup” screen.
“To configure projector’s 
network settings and 
wireless LAN connection 
settings” (page 35)
How can I check the 
projector’s SSID and 
login code?
z Check the Wireless standby screen. “To perform wireless 
projection” (page 13)
B










