BenQ Pe7800 Digital Projector Home Theater Users Manual

							  31   Additional Information
Replacing the Lamp (Contact your BenQ dealer for 
assistance)
CAUTION: The lamp may be very hot. Allow the projector to cool down for 45 minutes before replacing the 
lamp.
Resetting the lamp counter
14. On the control panel, simultaneously press and hold the S, T, and   POWER buttons for at least 
3seconds.
■Once the lamp life exceeds 1,500 hours, the lamp will not light, even after you replace it. The lamp 
counter must be reset as soon as a new lamp is installed.
■Do not reset the lamp life without replacing the lamp. 1. Loosen the screws 
on the front lamp 
cover. 
2. Remove the front 
lamp cover.
3. Loosen the three 
screws on the 
lamp shield. 
4. Take off the lamp 
shield.
5. Loosen the three 
screws on the 
lamp module.
6. Pull out the lamp 
module 
horizontally. 
Pulling it too 
quickly may cause 
broken glass to scatter about if the bulb has broken.
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 box after the 
lamp is removed. If you touch the optical component 
inside, it could cause color unevenness and distortion 
of the projected images.
7. Insert the new 
lamp module 
into the 
projector 
horizontally 
until it is 
securely in place.
8. Tighten the two 
screws on the lamp module.
9. Put on the lamp 
shield.
10.  Tighten the three 
screws on the 
lamp shield.
11. Put on the front 
lamp cover.
12. Tighten the 
screws on front 
lamp cover.
Loose screws 
may cause a bad 
connection, which 
could result in malfunction.
Do not over tighten the screws.
13.  Turn the power on and go into Environment 
menu to reset the Lamp Timer item.
■Power will not turn on while the lamp cover is 
off. 
						

							32  Additional Information  
Indicators
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 
(Green)POWER 
(Orange)LAMP STATE REMARK
Green Orange Red Initial the projector. Cannot accept any commands.
Off Orange
OffStandby mode.
OffFlashing 
OrangeLamp is warming up. Cannot turn the projector off.
Green Off Power on.
Flashing 
GreenOff Lamp is cooling down. Cannot turn the projector on.
POWER 
(Green)POWER 
(Orange)LAMP 
(Red)STATE REMARK
GreenOffFlashing 
red 
three 
times in 
a rowThe 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 
35°C / 95°F.
OffFlashing 
red two 
times in 
a rowThe fans are not working.Solution:
•Check if the power supply is 
stable.
• Check if there is object stuck 
in the fans.
•Contact your dealer.
Off Red The projection is damaged. Contact your dealer.
Flashing 
GreenFlashing
OrangeOffAlmost time to to replace the 
lamp. The lamp has been used for 
2000 hours. (The power is on.)Solution:
• Install a new lamp.
Green OrangeFlashing 
RedThe lamp is too hot to turn the 
projector on.Solution:
•Wait for 3 minutes to cool 
down the projector. You can 
restart the projector when it 
is back to standby mode. 
						

							  33   Additional Information
Troubleshooting
ProblemCauseRemedy
The projector does 
not turn on.There is no power from the power 
cable.Plug the power cord into the AC inlet on the 
rear of the projector, and plug the power 
cord into to the power outlet. If the power 
outlet has a switch, make sure that it is 
switched on.
The power switch is not in the on 
position.Put the power switch in the on position.
Attempting to turn the projector on 
again during the cooling process.Wait until the cooling down process has 
completed.
The front lamp cover is not securely 
attached.Correctly attach the front lamp cover.
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.
The projector is not correctly 
connected to the input source 
device.Check the connection.
The input signal has not been 
correctly selected.Select the correct input signal with the 
INPUT keys: Component 1, Component 2, 
DVI-D, DVI-A, Video and S-Video on the 
remote control.
The input signal has not been 
correctly selected in the INPUT 
SOURCE item in the DISPLAY 
menu.Select the correct input signal.
POWER light or LAMP indicator 
light flashing.Please contact your BenQ dealer for 
assistance.
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.
Picture is blurred.The projection lens is not correctly 
focused.Adjust the focus of the lens using the focus 
ring.
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.
The lens cap is still attached to the 
lensRemove the lens cap.
Remote control does 
not work correctlyThe batteries are out of power.  Replace both of the batteries with new ones.
LAMP light flashes 
red.The front lamp cover is not correctly 
attached.Correctly attach the front lamp cover.
The cooling fan is not working 
properly.Please contact your BenQ dealer for 
assistance.
The temperature inside the projector 
is extremely high.Check that the ventilation holes are not 
blocked.
The ambient temperature is too high 
(above 35°C / 95°F).Wait until the room cools down or move the 
projector to a cooler loaction.
POWER indicator 
light flashes orange 
and green 
sequentially.The lamp has exceeded its specified 
usage time.Replace the lamp with a new one.
The lamp has burned out. Replace the lamp with a new one. 
						

							34  Additional Information  
Specifications
All specifications are subject to change without notice. 
Optical Characteristics
Projection system
Single-chip DLPTM system.
DMD chip0.64” DMD W_Pal (1024 x 576)
Contrast ratio2000 : 1
Lens1.2-times zoom ratio, F/# 2.67 ~ 3.24, efl 23.4 ~ 28.3
Focus distance1.5m to 8m / 5.2ft to 26.2ft
Projection size1.27m to 5.1m / 50 to 200 inches
Lamp210W NSH
Electrical Characteristics
Color systemNTSC3.58 — NTSC 4.43 — SECAM / PAL-M / PAL-N
ResolutionXGA, SVGA, VGA, 480p, 720p, 1080i
Max. number of display colors16,770,000 colors (full color display)
Input/Output
Video, S-Video, Component (Y/ CB/ CR)
RS-232C (phone jack), DTV (Y/ P
B/ PR), RGBHV, DVI, Trigger (mini-jack)
General Characteristics
Dimensions 400mm x 347mm x 116mm (L x W x H)
We i g h t16.7 lbs / 7.6 kg
PowerVAC 100 - 240 Full-range switch  (50/60Hz), 3 Wire Grounded
Power consumptionMax 300 W
Operating temperature5°C to 35°C / 41°F to 95°F
Operating humidity10% - 90%
Storage temperature-10°C- 60°C / 14°F to 140°F
Storage humidity10% - 90%
Ke ystone+ 12° - -12° 
						

							  35   Additional Information
Dimensions 
Unit: mm