Vivitek D791st User Manual

DLP Projector – User’s Manual 
 
 
Using the Physical Lock 
®Using the Kensington
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 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:...

DLP Projector – User’s Manual 
 
 
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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...

DLP Projector – User’s Manual 
 
 
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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 Power or...

DLP Projector – User’s Manual 
 
 
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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...

DLP Projector – User’s Manual 
 
 
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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...

DLP Projector – User’s Manual 
 
 
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SPECIFICATIONS 
Specifications 
Note: For questions regarding product specifications , please contact your local distributor.  
Model name  D795WT D791ST 
Display type TI DMD 0.65 WXGA  TI DMD 0.55 XGA 
Resolution WXGA 1280 x 800 Native  XGA 1024 x 768 Native 
Projection distance  22.4 mm ~ 62.3 mm(+/-10mm
) 
Projection screen size  87 to 97 inches  73 to 82 inches 
Projection lens  Fix 
Vertical keystone correction +/- 30 steps 
Projection methods Front,...

DLP Projector – User’s Manual 
 
 
Projection Distance vs. Projection Size 
D
L
H
Image Height
W
Image Width
 
Projection Distance and Size Table
D795WT D791ST 
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WXGA XGA  
16:10 16:9 
Distance (D) 62.3+/-10mm 22.4+/-10mm 62.3+/-10mm 22.4+/-10mm 
Diagonal 97 87 82” 73” 
Image Width (W) 2089mm 1868mm 1671mm 1494mm 
Image height (L) 1305mm 1167mm 1253mm 1120mm 
H 440+/-50mm 342+/-50mm 466+/-50mm 365.5+/-50mm 
 
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DLP Projector – User’s Manual 
 
 
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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...

DLP Projector – User’s Manual 
 
 
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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 
 
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DLP Projector – User’s Manual 
 
 
Projector Dimensions (mm) 
319.00
354.00
411.00
219.00157.00
 
 
 
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