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 
displayed properly, please upgrade the 
video driver of your computer. For Dell 
computers, see www.dell.com/support.
•Ensure that all the cables are securely 
connected. See "Adjusting Projector 
Image" on page 13.
•Ensure that the pins of the connectors 
are not bent or broken. 
•Use the Test Pattern in the Projector 
Settings of the Advanced Settings menu. 
Ensure that the colors of the test pattern 
are correct. 
Fn
F8CRT/LCD 
						

							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 monitor freezes, 
restart all the equipment and the 
projector.
If you are not using a Dell laptop 
computer, see your documentation. If 
images are not displayed properly, please 
upgrade the video driver of your 
computer. For a Dell computer, see 
www.dell.com/support.
The screen does not 
display your presentationIf you are using a portable computer, 
press  (Fn+F8). 
Image is unstable or 
flickeringAdjust the tracking in the OSD Display 
Settings of the Advanced Settings menu 
(in PC Mode only).
Image has vertical 
flickering barAdjust the frequency in the OSD Display 
Settings of the Advanced Settings menu 
(in PC Mode only). Problem (continued) Possible Solution (continued) 
						

							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 ft [1.3 m] ~ 26.25 ft [8 m]).
The image is stretched 
when displaying a 16:9 
DVDThe projector automatically detects the 
input signal format. It will maintain the 
aspect ratio of the projected image 
according to the input signal format with 
an Original setting.
If the image is still stretched, adjust the 
aspect ratio in the Display Settings of the 
Advanced Settings menu in the OSD.
Image is reversed Select Projector Settings of the 
Advanced Settings from the OSD and 
adjust the projector mode.
TEMP light is solid amber The projector has overheated. The display 
automatically shuts down. Turn the 
display on again after the projector cools 
down. If the problem persists, contact 
Dell.
TEMP light is blinking 
amberIf the projector fan fails, the projector will 
automatically shut down. Try to clear the 
projector mode by pressing and holding 
the Power button for 10 seconds. Please 
wait for about 5 minutes and try to power 
up again. If the problem persists, contact 
Dell. Problem (continued) Possible Solution (continued) 
						

							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 
ambient temperature may be above 
40°C. The projector automatically 
shuts down. Ensure that the air vents 
are not blocked and that the ambient 
temperature is within operational 
range. If the problem persists, 
contact Dell.OFF AMBER OFF
Fan 
breakdownOne of the fans has failed. The 
projector automatically shuts down. 
If the problem persists, contact Dell.OFFAMBER 
FlashingOFF
LD driver 
overheatedAir vents might be blocked or the LD 
driver has overheated. The projector 
will automatically shut down. Turn 
the display on again after the 
projector cools down. If the problem 
persists, contact Dell.AMBER AMBER OFF
Color Wheel 
breakdownColor wheel cannot start. The 
projector has failed and the projector 
automatically shuts down. Unplug 
the power cord after three minutes 
and then turn on the projector. If this 
problem persists, contact Dell.WhiteAMBER 
FlashingAMBER 
Flashing
LD failure LD is defective. OFF OFF AMBER
Fault - DC 
supply (+12V)Power supply has been interrupted. 
The projector automatically shuts 
down. Unplug the power cord after 
three minutes and then turn on the 
projector. If this problem persists, 
contact Dell.AMBER Flashing AMBER AMBER 
						

							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