Dell Projector 7760 User Manual

Connecting Wireless Display Adapter31
The Dell Network Projection Screen shown below appears:
12At Dell Network Projection screen, click Find a Projector, and then select 
Dell_42FE21E1 (random code).. 

32Connecting Wireless Display Adapter
13Click Mirror Off option to start the Dell 7760 network projection. 

Connecting Wireless Display Adapter33
Understanding the Buttons
Item Description
Control Toolbar
Mirror Off/OnClick to toggle network projection On/Off 
and screen extension.
Quality Click to toggle High/Low quality.
Audio Click to toggle audio On/Off.
ConferenceClick to activate the conference control 
settings.
 Preference Click to activate the fast connection settings. 

34Troubleshooting
Troubleshooting Tips
If you experience problems with your projector, see the following 
troubleshooting tips. If the problem persists, contact Dell.
4
Troubleshooting
Problem Possible Solution
No image appears on the 
screen
•Ensure that you have chosen the correct 
input source on the INPUT SOURCE 
menu.
•Ensure the external graphics port is 
enabled. If you are using a Dell laptop 
computer, press   (Fn+F8). For 
other computers, see your respective 
documentation. If images are not...

Troubleshooting35
Partial, scrolling, or 
incorrectly displayed image1Press the Auto Adjust button on the 
remote control.
2If you are using a Dell laptop computer, 
set the resolution of the computer to 
1080p (1920 x 1080):
aRight-click the unused portion of your 
Microsoft® Windows® desktop, click 
Properties, and then select Settings 
tab.
bVerify that the setting is 1920 x 1080 
pixels for the external monitor port.
cPress  (Fn+F8). 
If you experience difficulty in changing 
resolutions, or if your...

36Troubleshooting
Image color is incorrect•If the display receives the wrong signal 
output from the graphics card, please set 
the signal type to 
RGB in the OSD Image 
Settings
 of the Advanced Settings tab.
•Use Test Pattern in the Projector 
Settings
 of the Advanced Settings 
menu. Ensure that the colors of the test 
pattern are correct. 
Image is out of focus1Adjust the focus ring on the projector 
lens.
2Ensure that the projection screen is 
within the required distance from the 
projector (4.27...

Troubleshooting37
The remote control is not 
operating smoothly or 
works only within a limited 
rangeThe battery may be low. If so, replace with 
two new AAA batteries.
LAN control support
•Web Control functions were verified on 
IE9, IE10, and IE11. The other version 
may have compatibility problem.
•The Compatibility View setting should be 
disabled. Otherwise the web control 
page may have icon or content display 
abnormal issue.
Problem (continued) Possible Solution (continued) 

38Troubleshooting
Guiding Signals
Projector 
StatusDescriptionControl Buttons Indicator
PowerTEMP 
(Amber)LAMP 
(Amber)
Standby 
modeProjector in Standby mode. Ready to 
power on.White Flashing OFF OFF
Warming up 
modeProjector takes some time to warm 
up and power on.White OFF OFF
LD on Projector in Normal mode, ready to 
display an image.
 Note: The OSD menu is not 
accessed.White OFF OFF
Cooling 
modeProjector is cooling to shutdown.
White OFF OFF
Projector 
overheatedAir vents might be blocked or...

Maintenance39
Replacing Remote Control Batteries
 NOTE: Remove the batteries from the remote control when not in 
use.
1Press the tab to lift the battery compartment cover.
2Check the polarity (+/-) marking on the batteries.
3Insert the batteries and align their polarity correctly 
according to the marking in the battery compartment.
 NOTE: Avoid mixing different types of batteries 
or using new and old batteries together.
5
Maintenance
1
AAAAAA
2
AAAAAA
3 

40Maintenance
4Slip the battery cover back.4