Vivitek D795wt User Manual

							
DLP Projector – User’s Manual 
 
 
–  43  – 
Cleaning the Projector 
Cleaning the projector to remove dust and grime will help ensure trouble-free operation.  
Warning: 
1.  Be sure to turn off and unplug the projector at  least 30 minutes before cleaning. Failure to do so 
could result in a severe burn. 
2. Use only a dampened cloth when cleaning. Do not allow water to enter the ventilation openings 
on the projector.  
3. If a little water gets into the projector interior  while cleaning, leave unplugged in a well-ventilated 
room for several hours before using. 
4. If a lot of water gets into the projector inte rior when cleaning, have the projector serviced. 
Cleaning the Lens 
You can purchase optic lens cleaner from most camera stores . Refer to the following to clean the pro-
jector lens. 
1.   Apply a little optic lens cleaner to a clean soft cloth. (Do not apply the cleaner directly to the lens.) 
2.  Lightly wipe the lens in a circular motion. 
Caution: 
1. Do not use abrasive cleaners or solvents. 
2. To prevent discoloration  or fading, avoid getting cleaner on the projector case. 
Cleaning the Case 
Refer to the following to clean the projector case. 
1.  Wipe off dust with a clean dampened cloth. 
2.  Moisten the cloth with warm water and mild deterg ent (such as used to wash dishes), and then wipe 
the case. 
3.   Rinse all detergent from the cloth and wipe the projector again. 
Caution: 
To prevent discoloration or fading of the case, do not use abrasive  alcohol-based cleaners. 
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DLP Projector – User’s Manual 
 
 
Using the Physical Lock 
®Using the Kensington
– 44 –  
 Lock 
If you are concerned about security, attach the proj ector to a permanent object with the Kensington 
slot and a security cable.  
 
Note: 
Contact your vendor for details on purchasing a suitable Kensi ngton security cable.  
The security lock corresponds to Kensington’s Micr oSaver Security System. If you have any com-
ment, contact: Kensington, 2853 Campus Drive, San Mateo, CA 94403, U.S.A. Tel: 800-535-4242, 
http://www.Kensington.com. 
 
Using the Security Chain Lock 
In addition to the password protection function and  the Kensington lock, the Security Chain Opening 
helps protect the PROJECTO R from unauthorized use. 
See the following picture. 
 
 
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DLP Projector – User’s Manual 
 
 
–  45  – 
 
TROUBLESHOOTING 
Common problems and solutions 
These guidelines provide tips to deal with problem s you may encounter while using the projector. If 
the problem remains unsolved, cont act your dealer for assistance. 
Often after time spent troubleshooting, the problem is  traced to something as simple as a loose con-
nection. Check the following before proceedi ng to the problem-specific solutions. 
• Use some other electrical device to confirm that the electrical outlet is working. 
• Ensure the projector is turned on. 
• Ensure all connections are securely attached.  
• Ensure the attached device is turned on. 
• Ensure a connected PC is not in suspending mode. 
• Ensure a connected notebook computer is configured for an external display. 
(This is usually done by pressing an Fn-key combination on the notebook.) 
Tips for Troubleshooting 
In each problem-specific section, tr y the steps in the order suggested. This may help you to solve the 
problem more quickly. 
Try to pin point the problem and thus  avoid replacing non-defective parts.  
For example, if you replace batteries and the problem remains, put the original batteries back and go 
to the next step.  
Keep a record of the steps you take when troubles hooting: The information may be useful when call-
ing for technical support or for passing on to service personnel. 
 
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DLP Projector – User’s Manual 
 
 
– 46 –  
LED Error Messages 
ERROR CODE MESSAGES WARNING LED LAMP LED 
BLINK 
POWER LED 
BLINK 
Power On 0 0 Blue 
Power Off 0 0 Orange 
Cooling 0 0 Flashing 
Over Temperature ON 0 0 
Thermal Break Sensor error 0 0 4  
Burner Fan error 0 1 6 
Lamp Fan error 0 2 6 
Lamp Door Open 0 0 7 
DMD error 0 0 8 
In the event of an error, please  disconnect the AC power cord and wait for one (1) minute before re-
starting the projector. If the POWE R or LAMP LEDs are still blinking or the WARNING LED is lit, 
contact your service center. 
Image Problems 
Problem: No image appears on the screen 
1.  Verify the settings on your notebook or desktop PC. 
2. Turn off all equipment and power up again in the correct order. 
Problem: The image is blurred  
1. Adjust the  Focus on the projector. 
2. Press the  Auto button on the remote control or projector. 
3. Ensure the projector-to-screen distance is within the 10-meter (33-feet) specified range. 
4. Check that the projector lens is clean. 
Problem: The image is wider at the top or bottom (trapezoid effect)  
1. Position the projector so it is as perpendicular to the screen as possible.  
2. Use the  Keystone button on the remote control or projector to correct the problem. 
Problem: The image is reversed  
Check the  Projection setting on the  Installation I menu of the OSD. 
Problem: The image is streaked  
1. Set the  Frequency  and Tracking settings on the  Computer menu of the OSD to the de-
fault settings. 
2.  To ensure the problem is not caused by a connected PC’s video card, connect to another 
computer.  
Problem: The image is flat with no contrast  
Adjust the  Contrast setting on the Image  menu of the OSD. 
Problem: The color of the projected image does not match the source imag\
e. 
Adjust the Color Temperature  and Gamma settings on the  Image menu of the OSD. 
 
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DLP Projector – User’s Manual 
 
 
–  47  – 
Lamp Problems 
Problem: There is no light from the projector  
1.  Check that the power cable is securely connected. 
2. Ensure the power source is good by te sting with another electrical device. 
3. Restart the projector in the correct order and check that the Power LED is green. 
4. If you have replaced the lamp recently,  try resetting the lamp connections.  
5. Replace the lamp module. 
6. Put the old lamp back in the projector and have the projector serviced. 
Problem: The lamp goes off 
1. Power surges can cause the lamp to turn  off. Re-plug power cord. When the Power LED 
is on, press the power button. 
2.  Replace the lamp module. 
3. Put the old lamp back in the projector and have the projector serviced. 
Remote Control Problems 
Problem: The projector does not respond to the remote control  
1. Direct the remote control towards remote sensor on the projector.  
2. Ensure the path between remote and sensor is not obstructed. 
3. Turn off any fluorescent lights in the room. 
4. Check the battery polarity. 
5. Replace the batteries. 
6. Turn off other Infrared-enabled devices in the vicinity. 
7. Have the remote control serviced. 
Audio Problems 
Problem: There is no sound 
1. Adjust the volume on the remote control.  
2. Adjust the volume of the audio source. 
3. Check the audio cable connection. 
4. Test the source audio output with other speakers. 
5. Have the projector serviced. 
Problem: The sound is distorted  
1. Check the audio cable connection. 
2. Test the source audio output with other speakers. 
3. Have the projector serviced. 
Having the Projector Serviced 
If you are unable to solve the problem, you should have the projector serviced. Pack the projector in 
the original carton. Include a description of the problem and a checklist of  the steps you took when 
trying to fix the problem: The information may be usef ul to service personnel. For servicing, return the 
projector to the place you purchased it. 
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DLP Projector – User’s Manual 
 
 
– 48 –  
HDMITM Q & A 
Q. What is the difference between a “Standard” HDMITM cable and a “High-Speed” 
HDMITM cable? 
Recently, HDMITM Licensing, LLC announced that cables would be tested as Standard or 
High-Speed cables.  
․ Standard (or “category 1”) HDMITM cables have been tested to perform at speeds of 75Mhz 
or up to 2.25Gbps, which is the equivalent of a 720p/1080i signal.  
․ High Speed (or “category 2”) HDMITM cables have been tested to perform at speeds of 
340Mhz or up to 10.2Gbps, which is the highe st bandwidth currently available over an 
HDMI
TM cable and can successfully handle 1080p signals including those at increased color 
depths and/or increased refresh rates from t he Source. High-Speed cables are also able to 
accommodate higher resolution displays, such as WQXGA cinema monitors (resolution of 
2560 x 1600). 
 
Q. How do I run HDMITM cables longer than 10 meters? 
There are many HDMITM Adopters working on HDMITM solutions that extend a cable’s effective 
distance from the typical 10 meter range to much longer lengths. These companies 
manufacture a variety of solutions that includ e active cables (active electronics built into 
cables that boost and extend the cable’s signal), repeaters, amplifiers as well as CAT5/6 and 
fiber solutions. 
 
Q. How can I tell if a cable is an HDMITM certified cable? 
All HDMITM products are required to be certified  by the manufacturer as part of the HDMITM 
Compliance Test Specification. However, ther e may be instances where cables bearing the 
HDMI
TM logo are available but have  not been properly tested. HDMITM Licensing, LLC actively 
investigates these instances to ensure that the HDMITM trademark is properly used in the 
market. We recommend that consumers buy  their cables from a reputable source and a 
company that is trusted. 
 
For more detail information check http://www.hdmi.org/learningcenter/faq.aspx#49
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DLP Projector – User’s Manual 
 
 
–  49  – 
 
SPECIFICATIONS 
Specifications 
Model name  D795WT 
Display type TI DMD 0.65 WXGA 
Resolution WXGA 1280 x 800 Native 
Projection distance 22.4 mm ~ 62.3 mm(+/-10mm
) 
Projection screen size  87 to 97 inches 
Projection lens  Fix 
Vertical keystone correction +/- 15 degrees 
Projection methods Front, Rear, Desktop/Ceiling (Rear, Front) 
Data compatibility VGA, SVGA, XGA, SXGA, SXGA+, UXGA, Mac 
SDTV/EDTV/ HDTV  480i, 576i, 480p, 576p, 720p, 1080i, 1080p 
Video compatibility NTSC/NTSC 4.43, PAL (B
/G/H/I/M/N/60), SECAM 
H-Sync  15.6 – 91.1 kHz 
V-Sync  43 – 85 Hz 
Safety certification FCC-B, UL, CB, CE, CCC, KC, SASO, PCT, Argentina TUV, NOM, PSB 
Operation temperature  5° ~ 40°C 
Dimensions 354 mm (W) x 219 mm (H) x 411 mm (D) 
AC Input AC Universal 100 – 240, Typical @ 110VAC (100 – 240)/+-10% 
Power consumption  290W 
Stand By 
						

							
DLP Projector – User’s Manual 
 
 
– 50 –  
Projection Distance vs. Projection Size 
D
L
H
Image Height
W
Image Width
 
Projection Distance and Size Table 
WXGA 
D795WT 
16:10 
Distance 62.3+/-10mm 22.4+/-10mm 
Diagonal 97  87 
Image height  2089mm  1868mm 
Image Width  1305mm  1167mm 
H 440+/-50mm 342+/-50mm 
 
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DLP Projector – User’s Manual 
 
 
–  51  – 
Timing Mode Table 
The projector can display several resolutions. The  following table outlines the resolutions that can be 
displayed by the projector. 
SIGNAL RESOLUTION H-SYNC  
(KHZ) 
V-SYNC
(HZ) 
COMPOSITE 
/ S-VIDEOCOMPONENT RGB 
(ANALOG) 
DVI/ 
HDMITM 
(DIGITAL)
NTSC — 15.734 60.0 O  — 
－  － 
PAL/SECAM — 15.625 50.0 O  — 
－  － 
720 x 400  37.9  85.0  —  —  O  O 
640 x 480  31.5  60.0  —  —  O  O 
640 x 480  37.9  72.8  —  —  O  O 
640 x 480  37.5  75.0  —  —  O  O 
640 x 480  43.3  85.0  —  —  O  O 
800 x 600  35.2  56.3  —  —  O  O 
800 x 600  37.9  60.3  —  —  O  O 
800 x 600  46.9  75.0  —  —  O  O 
800 x 600  48.1  72.2  —  —  O  O 
800 x 600  53.7  85.1  —  —  O  O 
1024 x 768  48.4  60.0  —  —  O  O 
1024 x 768  56.5  70.1  —  —  O  O 
1024 x 768  60.0  75.0  —  —  O  O 
1024 x 768  68.7  85.0  —  —  O  O 
1280 x 800  49.7  59.8  —  —  O  O 
1280 x 1024  64.0  60.0  —  —  O  O 
1280 x 1024  80.0  75.0  —  —  O  O 
1280 x 1024  91.1  85.0  —  —  O  O 
1400 x 1050  65.3  60.0  —  —  O  O 
VESA 
1600 x 1200  75.0  60  —  —  O  O 
640 x 480  35.0  66.7  —  —  O  O 
832 x 624  49.7  74.5  —  —  O  O 
1024 x 768  60.2  74.9  —  —  O  O 
Apple  
Macintosh  1152 x 870  68.7  75.1  —  —  O  O 
480i 15.734 60.0  —  O  —  O SDTV  576i 15.625 50.0  —  O  —  O 
576p 31.3 50.0 —  O  —  O EDTV 480p 31.5 60.0 —  O  —  O 
 
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DLP Projector – User’s Manual 
 
 
– 52 –  
 
SIGNAL RESOLUTION H-SYNC  
(KHZ) 
V-SYNC
(HZ) 
COMPOSITE 
/ S-VIDEOCOMPONENT RGB 
(ANALOG) 
DVI/ 
HDMITM 
(DIGITAL)
720p 37.5 50.0 — O — O 
720p 45.0 60.0 — O — O 
1080i 33.8 60.0 — O — O 
1080i 28.1 50.0 — O — O 
1080p 27 24 — O — O 
1080p 28 25 — O — O 
1080p 33.7 30 — O — O 
1080p 67.5 60.0 — O — O 
HDTV 
1080p 56.3 50.0 — O — O 
O: Frequency supported 
—: Frequency not supported 
The resolution of the panel for the D795WT is  1280 x 800. Resolution other than native resolution 
may display with uneven size of text or lines.
 
 
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