Vivitek D755wt User Manual

DLP Projector—User’s Manual 
Source Filter 
Press the ENTER button to enter the  Source Filter sub menu. 
 
ITEM DESCRIPTION 
VGA1 Press  the ◄►  buttons to enter and enable or disable the VGA1 source. 
VGA2   Press the ◄► buttons to enter and enable or disable the VGA2 source. 
Composite Video  Press the ◄► buttons to enter and enable or disable the Composite Video source. 
S-Video Press  the ◄►  buttons to enter and enable or disable the S-Video source. 
HDMI Press  the ◄►  buttons to enter and enable...

DLP Projector—User’s Manual 
— 44— 
MAINTENANCE AND SECURITY 
Replacing the Projection Lamp 
The projection lamp should be replaced when it  burns out. It should only be replaced with a 
certified replacement part, which you can order from your local dealer.  
Important: 
a.  The projection lamp used in this product contains a small amount of mercury. 
b.  Do not dispose this product  with general household waste. 
c. Disposal of this product must be carried out in  accordance with the regulations of...

DLP Projector—User’s Manual 
2.  Remove the lamp 
compartment cover. 
 
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: The lamp module 
must sit securely in place 
and the lamp connector 
must be connected 
properly before tightening...

DLP Projector—User’s Manual 
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  Settings 2 menu. 
Press the cursor button to move 
down to Advanced 1 and press 
enter. 
3.  Press the cursor  ▼▲ button to 
move down to  Lamp Hour Reset .
4.  Press the cursor ► or Enter 
button.  
A message screen appears. 
5.  Press  ▼▲◄►  buttons to reset...

DLP Projector—User’s Manual 
Cleaning the filter (filter: optional parts) 
The air filter prevents dust from accumulating on the surface of the optical elements inside the 
projector. If the filter is dirty or clogged, your  projector may overheat or degrading the projected 
image quality. 
1.  Turn off the projector, and 
unplug the AC power cord 
from the AC outlet.
 
2.  Cleaning the filter with a 
vacuum cleaner.
 
  
 
Caution: 
Recommend avoiding dusty or smoky environmen ts when you operate the...

DLP Projector—User’s Manual 
Replacing the Filter 
1.  Turn off the projector, and 
unplug the AC power cord 
from the AC outlet.  
Clean up the dust on the 
projector and around the 
air vents.  
Pull out the filter cover and 
remove from the projector 
Use soft brush gently to 
clean the filter dust both 
side. 
 
2.  Or lift the filter from the 
filter cover. 
 
3.   Replace a new filter 
module or replace filter into 
cover. 
 
4.  Replace the filter cover 
back to the projector by 
pushing gently in...

DLP Projector—User’s Manual 
Cleaning the Projector 
Cleaning the projector to remove dust and grime will help ensure trouble-free operation.  
Cleaning the Projector Mirror: 
 
 
Remove dust with a “Bellows/Lens Blower”  
readily available from Camera shops to prev ent scratching the mirror when subsequently wiped. 
Cautions: 
1. Always turn the projector off and allow to cool for at least 30 minutes prior to cleaning. 
2. Never touch the projector mirror or Lens directly by hand. 
3. Do not use...

DLP Projector—User’s Manual 
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 detergent (such as used to wash dishes), and 
then wipe the case. 
3. Rinse all detergent from the cl oth and wipe the projector again. 
Caution: 
To prevent discoloration or fading of the case, do not use abrasive  alcohol-based cleaners. 
 
Warning: 
1. Be sure to turn off and unplug the projector at least 30...

DLP Projector—User’s Manual 
Using the Physical Lock 
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 Kensi ngton security cable.  
The security lock corresponds to Kensington’s Mi croSaver Security System. If you have any 
comment, contact: Kensington, 2853 Campus Drive, San Mateo,  CA 94403, U.S.A. Tel: 800-
535-4242,...

DLP Projector—User’s Manual 
— 52— 
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, c ontact your dealer for assistance. 
Often after time spent troubleshooting, the problem is traced to so mething as simple as a loose 
connection. Check the follow ing before proceeding to the  problem-specific solutions. 
  Use some other electrical device to confirm that the electrical...