Xerox Projector Dp 820 User Manual

User Controls
26Xerox DP 820 User’s Guide
Auto Shutdown—Sets the projector lamp to automatically shut 
down if it doesn’t receive an input signal within 30 minutes.
• Press the     buttons to select this option.
ON—The lamp will automatically shut down in 30 minutes if 
it doesn’t receive a signal
OFF—The lamp will remain lit, even if no signal is received
OSD Timeout—Sets the duration the OSD menus remain on the 
screen before automatically closing if you don’t make a selection.
• Press the     buttons...

Xerox DP 820 User’s Guide27
Maintenance
Maintenance
The projector needs proper maintenance. Keep the lens clean 
because dust, dirt, or spots will project on the screen and diminish 
image quality. 
Keep the projector housing clean to maintain its appearance.
Before cleaning the lens or housing, always turn off the power first 
and unplug the power cord.
Note that only the lamp is replaceable. If any other parts need 
replacing, contact your dealer or qualified service personnel.
Warning—Never open any...

Maintenance
28Xerox DP 820 User’s Guide
Changing the Lamp
The projector automatically monitors the lamp life. As the lamp 
reaches the end of its life, the image becomes darker and the color 
hues weaker. The projector’s Lamp LED turns red to let you know 
that the lamp must be changed soon before it fails completely.
When you see the red Lamp LED, please change the lamp as soon 
as possible.
Note that lamp lifetimes vary according to the operating 
environment and type of use. Lamp lifetimes are not...

Xerox DP 820 User’s Guide29
Maintenance
To Change the Lamp Module
1. Turn off the projector’s power.
2. Disconnect the power cord.
3. Let the projector lamp cool completely, at least 45 minutes.
4. Place a protective cloth beneath the projector and turn it over 
so you can access the lamp cover.
5. Remove the lamp cover screws and lift it off.
6. Remove the screws holding the lamp in place, then grasp the 
lamp handle and lift the lamp directly up and out of the 
projector.
7. Hold the new lamp by its...

Maintenance
30Xerox DP 820 User’s Guide
Troubleshooting
If you try the troubleshooting procedures described in this section 
and the problem persists, you may have a malfunctioning projector. 
Refer to the technical support card that you received with your 
projector or contact the retailer where you purchased your 
projector. Also visit our web site at www.xeroxprojectors.com for 
additional technical information. 
Problem: No image appears on the screen.
Check for one of these possible problems:
•Are...

Xerox DP 820 User’s Guide31
Maintenance
Problem: The image is flickering or otherwise unstable
Try one of these possible solutions:
• Change the Phase setting on the OSD Display menu. See 
“Display Menu” on page 23.
• Change the number of colors that your computer displays on its 
monitor. See the documentation that you received with your 
computer for the steps to change the number of colors its 
monitor can display.
Problem: Image has vertical flickering stripes.
Try one of these possible solutions:
•...

Maintenance
32Xerox DP 820 User’s Guide
Problem: Image is reversed or inverted.
Use the OSD Advanced Menu to change the Rear or Ceiling option 
to display the image properly.
Problem: No sound.
Make sure the audio cables and other cables are connected 
properly.
Problem: Remote control does not work.
Check for one of these possible problems:
•Are you too far from the projector? The remote control has a 
range of about 10ft (3m) and needs to be within 20° of the 
sensor. Move closer to the projector and...

Xerox DP 820 User’s Guide33
Maintenance
Xerox DP 820 Projector Specifications
Note: Design and Specifications are subject to change without 
notice. Projection SystemSingle panel 0.55” DLP™ projector
Native Resolution48,000 dot x 1 (800 x 600 x 1)
Image Brightness1600 ANSI lumens (typical)
Uniformity80% (typical)
LensManual Zoom (1.2X)
Focal Length20.2 - 24.2mm
Contrast Ratio1500:1 (Full on/off) (typical)
Aspect Ratio1:1, 16:9, 4:3
Screen Size30 - 200 inches
Lamp200W
Projection TypeFront, Rear Ceiling...

Maintenance
34Xerox DP 820 User’s Guide
Preset Signals
The following tables describe the projector’s preset signals.
Preset Signal fH (kHz) fV (Hz) Sync Size
640 X 480 VGA MODE 3 31.469 59.940 H(-), V(-) 800
VGA VESA 72 H
Z37.861 72.809 H(-), V(-) 832
VGA VESA 75 H
Z37.500 75.500 H(-), V(-) 840
VGA VESA 85 H
Z43.269 85.008 H(-), V(-) 832
800 
X 600 SVGA VESA 56 HZ35.156 56.250 H(+), V(+) 1024
SVGA VESA 60 H
Z37.879 60.317 H(+), V(+) 1056
SVGA VESA 72 H
Z48.077 72.188 H(+), V(+) 1040
SVGA VESA 75 H...

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Maintenance
HDTV Preset Signals
Preset SignalsHorizontal 
Frequency 
(kHz)Ve r t i c a l  
Frequency 
(Hz)
480I15.8 kHz 60 Hz
480
P31.5 kHz 60 Hz
576
I15.6 kHz 50 Hz
576
P31.3 kHz 50 Hz
720
P45.0 kHz 60 Hz
720
P37.5 kHz 50 Hz
1080
I33.8 kHz 60 Hz
1080
I28.1 kHz 50 Hz