BenQ Cp120 Dlp Users Manual

Using the projector 43
High Altitude 
Mode (Off)
If you use this projector under other extreme conditions excluding the 
above, it may display auto shut-down symptoms, which is designed to 
protect your projector from over-heating. In cases like this, you should 
switch to High Altitude mode to solve these symptoms. However, this is 
not to state that this projector can operate under any and all harsh or 
extreme conditions, or whenever the projector will be used for extended 
periods of time (>10hours)...

Using the projector 44
5. Information Menu
This menu shows you the current operating status of the projector. 
Some picture adjustments are available only when certain input ports are in use. Unavailable 
adjustments are not shown on the screen. 
FunctionDescription
SourceShows the current signal source.
ResolutionShows the native resolution of the input signal.
Application 
ModeShows the selected application mode in the   Picture menu.
Equivalent 
Lamp HourDisplays the number of hours the lamp has been...

Maintenance 45
Maintenance
Care of the projector
Your projector needs little maintenance. The only thing you need to do on a regular basis is 
to keep the lens clean.
Never remove any parts of the projector except the lamp. Contact your dealer if other parts 
need replacing.
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the surface. 
• Use a canister of compressed air to remove dust. 
• If there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens 
cleaner...

Maintenance 46
Calculation of lamp hour
When the projector is in operation, the duration (by hours) of lamp usage is automatically 
calculated by the built-in timer. The method of calculating the equivalent lamp hour is as 
follows:
Total (equivalent) lamp hour = hours used in Economic mode + hours used in normal 
mode
See Economic Mode (Off) on page 43 for more information on Economic mode.
The lamp hour in Economic mode is calculated as 2/3 of that in normal mode. That is, using 
the projector in...

Maintenance 47
Replacing the lamp
• To reduce the risk of electrical shock, always turn the projector off and disconnect the power 
cord before changing the lamp.   
• To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before 
replacing the lamp.
To reduce the risk of injuries to fingers and damage to internal components, use caution 
when removing lamp glass that has shattered into sharp pieces.
To reduce the risk of injuries to fingers and/or compromising image...

Maintenance 48
• Pulling it too quickly may cause the lamp to break and scatter broken glass in the projector.
• Do not place the lamp in locations where water might splash on it, children can reach it, or 
near flammable materials.
• Do not insert your hands into the projector after the lamp is removed. If you touch the optical 
components inside, it could cause color unevenness and distortion of the projected images.
Step 7. Insert a new lamp. Ensure the handle is fully laid flat and locked in place....

Maintenance 49
Indicators
Illustration
•Blank - : Light OFF
•O : Orange light
• : Light flashing•
R : Red light
• : Light ON•
G : Green light
LightStatus & Description
POWERTEMPeratureLAMP
Power events
--
• The projector needs to cool after the power is 
turned off.
• The projector is in the startup cooling 
process.
--
Stand-by mode.
--The Power indicator light is flashing during 
powering up.
--The projector is under normal operation.
Lamp events
-It is warning you that lamp usage has exceeded 
2000 /...

Maintenance 50
-
The projector has shutdown automatically. If you 
try to re-start the projector, it will shutdown again. 
Please contact your dealer for assistance.
-
-
 RO
 R  R R
 R  R G
 R  RO
 G  R R
 G  R G
 G  RO
O  R R
O  R G
O  RO
 G R
 G G
Downloaded From projector-manual.com BenQ Manuals 

Troubleshooting 51
Troubleshooting
The projector does not turn on.
No picture.
Image is unstable
.
Image is blurred.
CauseRemedy
There is no power from the power 
cable.Plug the power cord into the AC inlet on the 
projector, and plug the power cord into the 
power outlet. If the power outlet has a switch, 
make sure that it is switched on. See Start 
up on page 21 for details.
Attempting to turn the projector on 
again during the cooling process.Wait until the cooling down process has 
completed. See...

Troubleshooting 52
Remote control does not work.
Unable to use wireless connection.
CauseRemedy
The battery is out of power. Replace the battery with a new one.
There is an obstacle between the 
remote control and the projector.Remove the obstacle.
You are too far away from the 
projector.Stand within 6 meters (~ 20 feet) of the 
projector.
CauseRemedy
The wireless connection modes 
between the projector and computer 
do not match.Change the wireless connection mode on the 
projector by pressing the SWAP...