Vivitek D825ex User Manual

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– 35 – 
 
3. Remove the two screws from 
the lamp module. 
4. Lift the module handle up. 
 
5. Pull firmly on the module  
handle to remove the lamp 
module. 
 
6. Reverse steps 1 to 5 to install 
the new lamp module.  
While installing, align the 
lamp module with the  
connector and ensure it is level 
to avoid damage. 
Note:...

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– 36 – 
Resetting the Lamp 
After replacing the lamp, you should reset the lamp hour counter to zero. Refer to the following: 
1.  Press the MENU button to open the 
OSD menu. 
2.  Press the cursor ◄► button to move 
to the Installation II menu. Press the 
cursor  button to move down to  
Advanced. 
 
3.  Press the cursor ▼▲ button to move...

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– 37 – 
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...

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– 38 – 
Using the Kensington® Lock 
If you are concerned about security, attach the projector to a permanent object with the Kensington 
slot and a security cable.  
 
Note: 
Contact your vendor for details on purchasing a suitable Kensington security cable.  
The security lock corresponds to Kensington’s MicroSaver Security System. If you...

— 39 — 
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 con-
nection. 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...

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– 40 – 
LED Error Messages 
ERROR CODE MESSAGES POWER LED 
BLINK 
OVER TEMP  
LED 
READY LED 
BLINK 
Over temperature  0 ON 0 
Thermal break status error  4  4  0 
Lamp error  5  0  0 
Fan1 error  6  0  1 
Fan2 error  6  0  2 
Fan3 error  6  0  3 
Lamp door open  7  0  0 
DMD error  8  0  0 
Color wheel error  9  0  0 
In the event of an...

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– 41 – 
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 green. 
4. If you have replaced the lamp...

— 42 — 
SPECIFICATIONS 
Specifications 
Model D825MS D820MS D825MX 
Display type TI DMD SVGA TI DMD SVGA TI DMD XGA 
Resolution SVGA 800x600 Native SVGA 800x600 Native XGA 1024x768 Native 
Projection distance 1 meters ~ 10 meters 1 meter ~ 10 meters 
Projection screen size 24.6 to 246 inches 23 to 255 inches 
Projection lens Manual focus Manual Focus/Manual Zoom 
Zoom ratio `N/A 1.1 
Vertical keystone  
correction +/- 15 degrees 
Projection methods Front, Rear, Desktop/Ceiling (Rear, Front) 
Data...

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– 43 – 
Projection Distance vs. Projection Size 
 
D825MS Projection Distance and Size Table 
D825MS TR 2 FIX ZOOM 
Distance (m)  1.22   3.25   4.06   10.00  
Diagonal (inches)  30  80  100  246 
Keystone (degree)  13.50   13.50   13.50   13.50  
Image Height (mm)  457.2  1219.2  1524  3749.04 
Image Width (mm)  609.6  1625.6...

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– 44 – 
D825MS / D820MS  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-VIDEO COMPONENT RGB
NTSC — 15.734 60.0 O — — 
PAL/SECAM — 15.625 50.0 O  — — 
640 x 350* 37.9 85.0 —...