Vivitek Dh758ust User Manual

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TROUBLESHOOTING 
Common problems and solutions 
These guidelines provide tips to deal with problems you may encounter while using the projector. 
If the problem remains unsolved, contact your dealer for assistance. 
Often after time spent troubleshooting, the problem is traced to something as simple as a loose 
connection. Check the following before proceeding 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 a Fn-key combination on the notebook). 
Tips for Troubleshooting 
In each problem-specific section, try 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 troubleshooting: The information may be useful when 
calling for technical support or for passing on to service personnel. 
  
						

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LED Error Messages 
ERROR CODE MESSAGES POWER LED 
GREEN 
LAMP LED 
RED 
TEMP LED 
RED 
Lamp Ready ON OFF OFF 
Start Flashing OFF OFF 
Cooling Flashing OFF OFF 
Over Temperature OFF OFF ON 
T1 error 3 blinks 1 blinks OFF 
Thermal Break Sensor error 4 blinks OFF OFF 
G794 error 4 blinks 4 blinks OFF 
Lamp fail 5 blinks OFF OFF 
Ballast temp over 5 blinks 1 blinks OFF 
Ballast circuit short 5 blinks 2 blinks OFF 
Lamp End of lamp life detected 5 blinks 3 blinks OFF 
Lamp did not ignite 5 blinks 4 blinks OFF 
Lamp extinguished during normal operation 5 blinks 5 blinks OFF 
Lamp extinguished during run-up phase 5 blinks 6 blinks OFF 
Lamp voltage too low 5 blinks 7 blinks OFF 
Ballast fail 5 blinks 8 blinks OFF 
Ballast communication fail 5 blinks 10 blinks OFF 
Ballast over temp 5 blinks 11 blinks OFF 
Restrike lamp fail 1 5 blinks 12 blinks OFF 
Restrike lamp fail 2 5 blinks 13 blinks OFF 
Lamp fail 1 5 blinks 14 blinks OFF 
Lamp fail 2 5 blinks 15 blinks OFF 
Fan 1 error 6 blinks 1 blinks OFF 
Fan 2 error 6 blinks 2 blinks OFF 
Fan 3 error 6 blinks 3 blinks OFF 
Fan 4 error 6 blinks 4 blinks OFF 
Case Open 7 blinks OFF OFF 
DMD error 8 blinks OFF OFF 
Color wheel error 9 blinks OFF OFF 
In the event of an error, please disconnect the AC power cord and wait for one (1) minute before 
restarting the projector. If the Power or Lamp LEDs are still blinking or any other situation that isnt 
listed in the chart above, please 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.  
						

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3. Ensure the projector-to-screen distance is within the 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 to correct the problem. 
Problem: The image is reversed  
Check the Projection setting on the Settings 1 menu of the OSD. 
Problem: The image is streaked  
1. Set the Frequency and Tracking settings on the Image->Computer menu of the OSD 
to the default 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 image. 
Adjust the Color Temperature and Gamma settings on the Image->Advanced menu of 
the OSD. 
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 testing with another electrical device. 
3. Restart the projector in the correct order and check that the Power LED is on. 
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 battery. 
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.   
						

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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 useful to service personnel. For servicing, 
return the projector to the place you purchased it.  
						

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HDMI Q & A 
Q. What is the difference between a “Standard” HDMI cable and a “High-Speed” 
HDMI cable? 
1. Recently, HDMI Licensing, LLC announced that cables would be tested as Standard 
or High-Speed cables.  
2. ˙Standard (or “category 1”) HDMI cables have been tested to perform at speeds of 
75Mhz or up to 2.25Gbps, which is the equivalent of a 720p/1080i signal.  
3. ˙High Speed (or “category 2”) HDMI cables have been tested to perform at speeds of 
340Mhz or up to 10.2Gbps, which is the highest bandwidth currently available over an 
HDMI cable and can successfully handle 1080p signals including those at increased 
color depths and/or increased refresh rates from the 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 HDMI cables longer than 10 meters? 
4. There are many HDMI Adopters working on HDMI 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 include 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 HDMI certified cable? 
5. All HDMI products are required to be certified by the manufacturer as part of the HDMI 
Compliance Test Specification. However, there may be instances where cables bearing 
the HDMI logo are available but have not been properly tested. HDMI Licensing, LLC 
actively investigates these instances to ensure that the HDMI 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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SPECIFICATIONS 
Specifications 
Model DH758UST DH758USTIR 
Display type DMD 0.65 1080P 
Resolution 1080P 1920 x 1080 Native 
Projection distance 663mm - 833mm 
Projection screen size 16:9 (88”~110”) 
Projection lens Fix 
Throw ratio 0.33 : 1 
Vertical keystone correction +/- 40 degrees 
Projection methods Front, Rear, Desktop/Ceiling (Rear, Front) 
Data compatibility VGA, SVGA, XGA, 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, 30 – 91.4 kHz 
V-Sync 24-30, 47-120 Hz 
Safety certification FCC, UL, cUL, CB, CE, CCC, KC, PSB, CU, CECP, NOM, ICES-003, C-TICK 
Operation temperature 0° ~ 40°C 
Dimensions 287.5mm(W)x122.6mm(H)x374.5mm(D) w/o mirror  
AC Input AC Universal 100 ~ 240V 
Power consumption 380W , 
						

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Projection Distance vs. Projection Size 
   
 
 
Projection Distance and Size Table  
 
DH758UST  / DH758USTIR Series  
1080P 
16:9 
Diagonal 88.9 99 102 110 
Distance 340.3+/-20mm 421.4+/-20mm 445.8+/-20mm 510.5+/-20mm 
Image Width 1968mm 2194mm 2262mm 2435mm 
Image height 1107mm 1234mm 1272mm 1370mm 
H  331.2+/-50mm 362.8+/-50mm 372.3+/-50mm 397.6+/-50mm 
 
   
						

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Timing Mode Table 
SIGNAL  RESOLUTION  H-SYNC 
( KHZ ) 
V-SYNC 
( HZ ) 
COMPOSITE 
S_VIDEO COMPONENT RGB 
(ANALOG) 
DP/HDMI 
(DIGITAL) 
NTSC － 15.734 60 ○ － － － 
PAL/SECAM － 15.625 50 ○ － － － 
VESA 
720 x 400 31.5 70.1 － － ○ ○ 
720 x 400 37.9 85.04 － － ○ ○ 
640 x 480 31.5 60 － － ○ ○ 
640 x 480 37.9 72.8 － － ○ ○ 
640 x 480 37.5 75 － － ○ ○ 
640 x 480 43.3 85 － － ○ ○ 
800 x 600 35.2 56.3 － － ○ ○ 
800 x 600 37.9 60.3 － － ○ ○ 
800 x 600 46.9 75 － － ○ ○ 
800 x 600 48.1 72.2 － － ○ ○ 
800 x 600 53.7 85.1 － － ○ ○ 
800 x 600 76.3 120 － － ○ ○ 
1024 x 768 48.4 60 － － ○ ○ 
1024 x 768 56.5 70.1 － － ○ ○ 
1024 x 768 60 75 － － ○ ○ 
1024 x 768 68.7 85 － － ○ ○ 
1024 x 768 97.6 120 － － ○ ○ 
1152 x 864 67.5 75 － － ○ ○ 
1280 x 720 45 60 － － ○ ○ 
1280 x 720 90 120 － － ○ ○ 
1280 x 768 47.4 60 － － ○ ○ 
1280 x 768 47.8 59.9 － － ○ ○ 
1280 x 800 49.7 59.8 － － ○ ○ 
1280 x 800 62.8 74.9 － － ○ ○ 
1280 x 800 71.6 84.9 － － ○ ○ 
1280 x 800 101.6 119.9 － － ○ ○ 
1280 x 1024 64 60 － － ○ ○ 
1280 x 1024 80 75 － － ○ ○ 
1280 x 1024 91.1 85 － － ○ ○ 
1280 x 960 60 60 － － ○ ○ 
1280 x 960 85.9 85 － － ○ ○ 
1366 x 768 47.7 60 － － ○ ○ 
1400 x 1050 65.3 60 － － ○ ○ 
1440 x 900 55.9 60 － － ○ ○  
						

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SIGNAL  RESOLUTION  H-SYNC 
( KHZ ) 
V-SYNC 
( HZ ) 
COMPOSITE 
S_VIDEO COMPONENT RGB 
(ANALOG) 
DP/HDMI 
(DIGITAL) 
1440 x 900 70.6 75 － － ○ ○ 
1600 x1200 75 60 － － ○ ○ 
1680 x 1050 64.7 59.9 － － ○ ○ 
1680 x 1050 65.3 60 － － ○ ○ 
1920 x 1200 74 60 － － ○ ○ 
1920 x 1080 67.5 60 － － ○ ○ 
Apple 
Macintosh 
640 x 480 35 66.7 － － ○ ○ 
832 x 624 49.7 74.5 － － ○ ○ 
1024 x 768 60.2 74.9 － － ○ ○ 
1152 x 870 68.7 75.1 － － ○ ○ 
SDTV 480i 15.734 60 － ○ － ○ 
576i 15.625 50 － ○ － ○ 
EDTV 576p 31.3 50 － ○ － ○ 
480p 31.5 60 － ○ － ○ 
HDTV 
720p 37.5 50 － ○ － ○ 
720p 45 60 － ○ － ○ 
1080i 33.8 60 － ○ － ○ 
1080i 28.1 50 － ○ － ○ 
1080p 27 24 － ○ － ○ 
1080p 28 25 － ○ － ○ 
1080p 33.7 30 － ○ － ○ 
1080p 56.3 50 － ○ － ○ 
1080p 67.5 60 － ○ － ○ 
O：Frequency supported 
—：Frequency not supported 
Resolution others than native resolution may be display with uneven size of text or line 
The color of     mean Displayable only. (4:3 only) 
The color of     mean may have a little noise is acceptable. Because video mode sync don’t auto 
adjustment. 
HDTV timing main check tool is DVD player, VG828 is secondary  
						

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Projector Dimensions ( DH758UST Series ) 
 160m
m
122.6m
m
374.5m
m