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) without shutdown.
Auto Off (Off)
This function allows the projector to turn off automatically if no input 
signal is detected after a set period of time. Press Left 3/ Right 4on the 
projector or remote control to set the duration before the projector is 
turned off. Selecting Off disables this function.
Economic 
Mode (Off)
Use this mode to reduce system noise and reduce power consumption by 
20%. If this mode is activated, the light output will be reduced and result 
in darker projected images.
Setting the projector in Economic mode extends the lamp timer 
automatic shutdown feature. For more information on how the total 
lamp hour is calculated, see Calculation of lamp hour on page 46.
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							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 used.
SystemShows the Video input system format, NTSC, SECAM or PAL.
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							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 and gently wipe the lens surface.
Never rub the lens with abrasive materials.
Cleaning the projector case
Before you clean the case, turn the projector off using the proper shutdown procedure as 
described in Shutdown on page 27 and unplug the power cord.
• To remove dirt or dust, wipe the case with a soft, dry, lint-free cloth.
• To remove stubborn dirt or stains, moisten a soft cloth with water and a neutral pH 
detergent. Then wipe the case.
Never use wax, alcohol, benzene, thinner or other chemical detergents. These can damage the 
case.
Storing the projector
If you need to store the projector for an extended time, please follow the instructions below:
• Make sure the temperature and humidity of the storage area are within the 
recommended range for the projector. Please refer to Specifications on page 53 or 
consult your dealer about the range.
• Retract the adjuster feet.
• Remove the batteries from the remote control.
• Pack the projector in its original packing or equivalent.
Transporting the projector
It is recommended that you ship the projector with its original packing or equivalent. When 
you carry the projector yourself, please use the original box or provided soft carry case.
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							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 Economic mode helps to extend the lamp hour by 1/3.
Wa r n i n g  m e s s a g e
When the Lamp indicator lights up red or a message appears suggesting it is time to replace 
the lamp, please install a new lamp or consult your dealer. An old lamp may cause a 
malfunction in the projector and in some instances the lamp may explode.
For more detailed information on projector warnings, please refer toIndicators on page 49.
The Lamp indicator light and Temperature warning light will light up if the lamp becomes too 
hot. Turn the power off and let the projector cool for 45 minutes. If the Lamp or Temp indicator 
still lights up after turning the power back on, please contact your dealer.
The following Lamp warning displays will remind you to change the lamp.
MessageStatus
The lamp has been in operation for 1800 hours. 
Install a new lamp for optimal performance. You 
may continue to operate the projector until the 1950 
hour lamp warning appears.
The lamp has been in operation for 1950 hours. A 
new lamp should be fitted to avoid the 
inconvenience when the projector runs out of lamp 
time.
The lamp has been in operation for over 2000 hours. 
This message will flash in the center of the screen for 
about 30 seconds together with the Lamp indicator 
lighting up red for 40 seconds.
If this warning message displays, the projector will 
shutdown in 40 seconds. The lamp MUST be 
replaced before the projector will operate normally.
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							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 quality by touching the 
lens, do not touch the empty lamp compartment when the lamp is removed.
This lamp contains mercury. Consult your local hazardous waste regulations to dispose of 
this lamp in a proper manner.
Step 1. Turn the power off and disconnect the projector from the wall socket.
Step 2. Protect the projectors surface by clearing a flat open area on your desk and placing a 
soft item on the desk for padding.
Step 3. Turn the projector over. Then loosen the 
screws. 
Step 4. Remove the lamp cover. If the lamp is hot, 
avoid burns by waiting for 45 minutes until 
the lamp has cooled.
Step 5. Loosen the screw fixing the lamp to the 
projector. If the screw is not loosened 
completely, the lamp cannot be removed. Be 
careful not to lose the screw as it is needed to 
hold the replacement lamp in place. It is 
strongly recommended that you use a 
magnetic-head screwdriver.
Step 6. Lift the handle so that it stands up. Use the 
handle to slowly pull the lamp out of the 
projector.
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							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. Reinsert 
and tighten the screw firmly.
• Loose screw may cause a bad connection, which could result in malfunction.
• Do not over tighten the screw.
Step 9. Restart the projector.
Do not turn the power on with the lamp cover removed. 
Step 10. Resetting the lamp counter
Do not reset if the lamp is not replaced as this could cause damage.
i. Press and hold the BLANK /5Up button on the 
projector for 5 seconds to display the total used lamp 
time.
ii. Press the AU TO (or AU TO / C H .) button to reset the 
lamp hour to “0”.
iii. Wait about 5 seconds to let the OSD disappear.
Temperature information
When the TEMPerature warning light flashes, it is warning you of the following possible 
problems:
• The internal temperature is too high.
• The fans are not working.
Turn the projector off and contact qualified service personnel for further help. For more 
detailed information, please refer to Indicators on page 49. Step 8. Reinstall the lamp cover and tighten the 
screws.
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							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 / 3000 (Economic mode) hours. Replace the 
projection lamp with a new one immediately.
--The lamp is not properly attached or the lamp is 
damaged. Please contact your dealer for assistance.
Thermal events
--
The projector has shutdown automatically. If you 
try to re-start the projector, it will shutdow n again. 
Please contact your dealer for assistance.-
-
  
  
O 
O 
 G 
 G 
O  R
 R
 R
 R R
 R G
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							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
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							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 Shutdown on page 27 for 
details.
CauseRemedy
The video source is not turned on or 
connected correctly.Turn the video source on and check that the 
signal cable is connected correctly. See 
Connection on page 16 for details.
The projector is not correctly 
connected to the input source device.Check the connection. See Connection on 
page 16 for details.
The input signal has not been 
correctly selected.Select the correct input signal with the 
SOURCE button on the projector or remote 
control. See Switching input signal on page 
26 for details.
The lens cover is not open. Slide open the lens cover.
CauseRemedy
The connection cables are not 
securely connected to the projector or
the signal source.Correctly connect the cables to the
appropriate terminals. See Connection on 
page 16 for details.
CauseRemedy
The projection lens is not correctly 
focused.Adjust the focus of the lens using the focus 
ring. See Fine-tuning the image size and 
clarity on page 24 for details.
The projector and the screen are not 
aligned properly.Adjust the projection angle and direction as 
well as the height of the unit if necessary. See 
Obtaining a preferred projected image size 
on page 12 for details.
The lens cover is not open. Slide open the lens cover.
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							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 or MODE/
SWAP button according to the wireless 
capability of your computer.
The wireless settings are not properly 
configured.Check the wireless settings of your computer. 
See Preparing your computer for wireless 
connection on page 29 for details.
The wireless signal is too weak.Move the computer to a location with better 
signal reception.
There are other wireless networks 
nearby.Press the CH. or AUTO/CH. button to change 
wireless connection to a different channel and 
try again.
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