BenQ Pe8720 Users Manual

							  31
  Additional information
EnglishTo clean the filter:
1.Shut down the projector if turned on and wait 
until the fans stop running. 2. Release the bottom edge of the filter cover (right 
side of projector) by gently pulling the tabs on the 
lower ends of the panel (as illustrated). 
3. Remove the filter cover by gently lifting the 
loosened cover vertically upwards and then away 
from the projector body. 4. Remove the dust filter grill by pulling the tab 
outwards and away from the projector. 
5. Use a small vacuum cleaner (designed for 
computers and other office equipment) or use a 
soft brush (such as a clean artist’s paintbrush) to 
vacuum or sweep the dust away. 
•If the dirt is difficult to remove or the filter is 
broken, you should replace it.6. Re-install the filter grill and cover securely. 
7. Reapply power and turn the projector on.
•If the filter grill is not correctly seated in place, 
you will be reminded by a message displayed 
on the screen every three minutes until 
MENU/EXIT on the projector or EXIT on the 
remote control is pressed. 
Please check if the filter is well attached.
•The projector will automatically shut down 
within minutes if there has been no further 
action taken. Re-install the filter and cover 
securely, then turn on the power again.8. Go to Setup > Reset Dust Filter Timer to reset the 
filter timer. See page 28 for details.
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32 Additional information  
EnglishInstalling the cable connector-panel cover
The cable connector-panel cover is used to cover those unsightly cables and connections in the rear of the 
projector.
To install the cover:
1.Repeat Step 1~Step 3 in the To clean the filter: 
section. 
See page 31  for details. 2. Place a soft item on the desk for padding. Turn the 
projector over so that you can locate the screws 
that hold the back cover to the projector on the 
both sides. Loosen the screws.
3. Turn the projector back. Remove the back cover.  4. Manage all the connected cables within the  indentation of the cable connector-panel cover 
whilst installing it securely. 
5. Turn the projector over again. Tighten the screws  to hold the cable connector-panel cover and the 
projector on the both sides. 6. Re-install the filter cover securely. 
7. The installation is finished. 
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							  33
  Additional information
EnglishReplacing the lamp
The lamp may be very hot. Allow the projector to cool for at least 45 minutes before replacing the lamp.
This lamp contains mercury. Consult your local hazardous waste regulations to dispose of this lamp in a 
proper manner.
10.  Turn the power on and go into Setup > Lamp > Reset Lamp Timer menu to reset the lamp time.
Do not reset the lamp timer if the lamp has not been replaced as this could cause damage.
1. Turn the power off and disconnect the 
projector from the wall socket. Turn off all 
connected equipment and disconnect all other 
cables.2. Slightly lift the projector up. Loosen the screws on 
the lamp cover (located on the left side). 
3. Remove the lamp cover.  4. Loosen the screws that hold the lamp to the 
projector. If the screws are not loosened 
completely, they could injure your fingers. It is 
strongly recommended that you use a magnetic-
head screwdriver to retain the screw should it 
come loose. 
5. Slowly pull the lamp out of the projector.
Pulling it too quickly may cause the lamp to 
break and scatter broken glass in the projector. To 
reduce the risk of injuries to fingers and damage to 
internal components, use caution when removing 
lamp glass that has shattered. 
Do not place the lamp in locations where water 
might splash on it, children can reach it, near or 
above heat sources, or near flammable materials.
Do not insert your hand into the projector 
when the lamp is removed. If you touch the optical 
components inside, it could cause blurred images.
6. Insert the replacement lamp. Make sure it is 
pushed fully and firmly in place.
7. Tighten the screws securing the lamp box.
Please be careful to not over-tighten the screws.
Loose screws may cause a bad connection, which 
could result in malfunction.
8. Re-install the lamp cover. 
9.  Tighten the screws on the lamp cover.
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							34 Additional information  
EnglishIndicators
There are three indicators which show the status of the projector. Check the following for information about the 
indicator lights. If there is anything wrong, turn the projector off and contact your dealer. 
When the projector is in a normal state, ... 
When the projector is in an abnormal state, ... 
POWER TEMP LAMP STATE REMARK
Orange
Off OffStandby mode.
Flashing 
orangeThe projector is powering up. Cannot turn the projector off.
GreenThe projector is under normal 
operation.
Flashing 
green(1) The projector needs 110 
seconds to cool down as it 
was abnormally shut down 
without the normal cooling 
down process. Or
(2) The projector needs to cool 
for 110 seconds after the 
power is turned off.Cannot turn the projector on.
POWER TEMP LAMP STATE REMARK
Orange Off Red(1) The lamp has exceeded its 
usage life. Or
(2) The lamp is not properly 
attached or is damaged.Solution:• Install a new lamp.
• Please contact your dealer for 
assistance.
Orange  Red OffThe dust filter is seriously clogged 
with dust. The projector is going to 
shut down.Solution:• Install a new filter.
Orange Red OffThe internal temperature is too 
high.
• The intake ventilation or the 
exhaust ventilation is blocked.
• The projector may be in a poorly 
ventilated location.
• The ambient temperature may 
be too high.
Solution:
• Make sure that the ventilation 
holes are not blocked.
• Relocate the projector.
• Stop using the projector until 
the ambient temperature falls 
within the specified range. The 
maximum operating 
temperature is specified as 40°C 
/ 104°F.
OrangeFlashing 
redFlashing 
redThe fans are not working.Solution:
• Check if the power supply is 
stable.
• Check if there is object stuck in 
the fans.
• Contact your dealer.
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							  35
  Additional information
EnglishTroubleshooting
Problem Cause Remedy
The projector does 
not turn on.
There is no power from the power 
cable.Plug the power cable into the AC inlet on the 
rear of the projector, and plug the power 
cable into to the power outlet. If the power 
outlet has a switch, make sure that it is 
switched on. (See page 19)
The power switch is not in the on 
position.Put the power switch in the on position. (See 
page 19)
Attempting to turn the projector on 
again during the cooling process.Wait until the cooling down process has 
completed.
The lamp cover is not securely 
attached.Correctly attach the lamp cover. (See page 
33)
No picture.
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 page 
17)
The projector is not correctly 
connected to the input source device.Check the connection. (See page 17)
The input signal has not been 
correctly selected.Select the correct input signal with the 
Source buttons on the remote control or 
SOURCE / ENTER on the projector. (See 
page 19)
Image is unstable.
The connection cables are not 
securely connected to the projector or 
the signal source.Correctly connect the cables to the 
appropriate terminals. (See page 17)
Picture is blurred.
The projection lens is not correctly 
focused.Adjust the focus of the lens using the focus 
ring. (See page 20)
The projector and the screen are not 
aligned properly.Adjust the projection angle and direction as 
well as the height of this unit if necessary. 
(See page 19)
The lens cap is still attached to the 
lensRemove the lens cap. (See page 19)
Remote control does 
not work correctly
The batteries are out of power. Replace both of the batteries with new ones. 
(See page 9)
There is an obstacle between the 
remote control and the projector.Remove the obstacle. (See page 13)
You are too far away from the 
projector.Stand within 8 meters (26.2 feet) of the 
projector. (See page 13)
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							36 Additional information  
EnglishSpecifications
All specifications are subject to change without notice. 
Dimensions
492 x 195 x 444 mm (W x H x D) with the cable connector-panel cover attached
492 x 195 x 393 mm (W x H x D) without the cable connector-panel cover attached
Unit: mm
Optical
Projection systemSingle-chip DLPTM system.
DMD chip0.8 DLP (1280 x 720)
Lens1.35x zoom
Projection screen size23.5 ~ 300
Lamp250W
Electrical
Video SignalNTSC / NTSC4.43 / PAL-M / PAL-N / SECAM / DTV
Data SignalWXGA, XGA, SVGA, VGA, VESA, 
Macintosh
® 16/13 and 21/19(in Advanced Intelligent Compression),
HDTV compatible (1080i, 720p, 576p, 576i, 480p, 480i)
Max. number of display colors16,770,000 (full color display)
Terminals
InputVideo, S-Video, Component (Y/ CB/ CR, Y/ PB/ PR) RS-232C, RGBHV, 
HDMI 
Output12VDC
General characteristics
We i g h t20.9lbs / 9.5kg
PowerVAC 100 - 240V, 4.0 A, 50 / 60 Hz (Automatic)
Power consumptionMax 320W
Operating temperature0 °C to 40 °C at sea level
Operating humidity10% - 90% (without condensation)
Operating altitude6000 feet at 30°C, 6000 - 10000 feet at max. 23°C
Storage temperature-10°C- 60°C / 14°F to 140°F
Storage humidity10% - 90%
492
393 444 195
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