BenQ Ob8140/pb8240/pb8250 Digital Projector Installation Series Users Manual

Operation 35
5. PIP (Picture In Picture) Menu
Your projector is capable of displaying images simultaneously from two input sources, which 
enhances your presentation in a more effective way.
These functions are available only when the input source is PC and the PIP source is Video 
or S-Video.  
FUNCTIONDESCRIPTION
PIP SourceSelects the source for the PIP.
PIP Size
Press the 3 / 4 keys to scroll through the four alternatives: Off, Small, 
Medium, Large. 
 When the resolution of the PC signal is 1280 x...

Maintenance 36
Maintenance
Your projector needs little maintenance. Things you have to do on a regular basis are keep 
the lens clean and clean the air filter to prevent overheating.
Never remove any parts of the projector except the lamp and air filter. Contact your dealer if 
other parts needs replacing.
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the surface. 
Q Use a canister of compressed air to remove dust. 
Q If there is dirt or smears, use lens-cleaning paper or moisten a...

Maintenance 37 4. Use a small vacuum cleaner designed for computers 
and other office equipment to clean the filters. Or 
use a soft brush (such as a clean artist’s paintbrush) 
to gently sweep the dust away.
If the dirt is difficult to remove or the filters are 
broken, contact your place of purchase to replace 
them.
5. Replace the filters then press the covers back until 
they click into place.
If the covers are not correctly seated in place, you 
will be reminded by a message displayed on the 
screen...

Maintenance 38
Lamp Information
Use and Replacement of the Lamp
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 mal-
function in the projector and in some instances the lamp may explode.
For more detailed information on the warning indicators, please refer to page 40.
The Lamp indicator light and Temperature warning light will light up if the lamp becomes too
hot. Turn the...

Maintenance 39
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 and dispose of
this lamp in the proper manner.
Step 1. Turn the power off and disconnect the projector from the wall socket.
Step 2. Turn the projector over. Then loosen the 
screws and remove the lamp cover. If the 
lam p is  h ot, avoid bur ns  by...

Maintenance 40Step 7. Reset the lamp counter  
i. Press and hold Exit on the projector 
for 3 seconds to display the total used 
lamp time.
ii. Press Menu on the projector or on 
the remote control to access the lamp 
hour timer. An adjustment message 
will appear.
iii. Press W or X to reset lamp hours 
and press EXIT to leave.
Te m p  Wa r n i n g  L i g h t
When the Temperature warning light is on, it is warning you of the following possible prob-
lems:
1. The internal temperature is too high.
2. Air...

Maintenance 41
LEDStatus & Description
PowerTe m pLamp
Power events
The projector has just been connected to a power outlet.
--
Stand-by mode.
--
(1) The projector needs 90 seconds to cool down as it was 
abnormally shut down without the normal cooling down 
process. Or
(2) The projector needs to cool for 90 seconds after the power 
is turned off.
--
The Power indicator lig ht is flashing during powering up.
--
The projector is under normal operation.
Lamp events
---The lamp counter has developed a...

Maintenance 42The projector has shutdown automatically. If you try to re-
start the projector, it will shutdown again. Please contact your 
dealer for assistance.
The projector has shutdown automatically. If you try to re-
start the projector, it will shutdown again. Please contact your 
dealer for assistance.
-
The projector has shutdown automatically. If you try to re-
start the projector, it will shutdown again. Please contact your 
dealer for assistance.
The projector has shutdown automatically. If...

Maintenance 43
Service Information
Accessories (included in the standard package) 
Optional Accessories (not included in the standard package)  
Ordering Parts or Getting Information
For product information, product assistance, service information, or to order accessories, 
please visit the BenQ Corporation website at http://www.BenQ.com.
Description   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Part Number
Power cord (US)  . . . . . . . . . . . . . ....

Troubleshooting 44
Troubleshooting
Common Problems & Solutions
THE PROJECTOR DOES NOT TURN ON.
NO PICTURE   
BLURRED IMAGE
REMOTE CONTROL DOES NOT WORK
  
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.
Attempting to turn the projector on 
again during the cooling process.Wait until the cooling down process has 
completed....