BenQ MX808PST+ User manual

Digital Projector
User Manual
MX808PST+ V 1.00

2 Warranty and Copyright information
Warranty and Copyright information
Limited warranty
BenQ warrants this product against any defects in material and workmanship, under normal usage and
storage.
Proof of purchase date will be required with any warranty claim. In the event this product is found to be
defective within the warranty period, BenQ's only obligation and your exclusive remedy shall be
replacement of any defective parts (labor included). To obtain warranty service, immediately notify the
dealer from which you purchased the product of any defects.
Important: The above warranty shall be void if the customer fails to operate the product in accordance
with BenQ's written instructions, especially the ambient humidity must be in-between 10% and 90%,
temperature in-between 0°C and 35°C, altitude lower than 4920 feet, and avoiding to operate the
projector in a dusty environment. This warranty gives you specific legal rights, and you may have other
rights which vary from country to country.
For other information, please visit www.BenQ.com.
Copyright
Copyright © 2019 by BenQ Corporation. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of BenQ Corporation.
Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied, with respect
to the contents hereof and specifically disclaims any warranties, merchantability or fitness for any
particular purpose. Further, BenQ Corporation reserves the right to revise this publication and to make
changes from time to time in the contents hereof without obligation to notify any person of such
revision or changes.
*DLP, Digital Micromirror Device and DMD are trademarks of Texas Instruments. Others are
copyrights of their respective companies or organizations.
Patents
Please go to http://patmarking.benq.com/ for the details on BenQ projector patent coverage.

3Table of Contents
Table of Contents
Warranty and Copyright information ................................................................................ 2
Important safety instructions .............................................................................................. 4
Introduction .......................................................................................................................... 7
Shipping contents ....................................................................................................................................... 7
Projector exterior view ............................................................................................................................ 8
Controls and functions.............................................................................................................................. 9
Positioning your projector ................................................................................................. 12
Choosing a location .................................................................................................................................12
Obtaining a preferred projected image size....................................................................................... 13
Mounting the projector ..........................................................................................................................13
Adjusting the projected image ..............................................................................................................14
Connection .......................................................................................................................... 16
Operation ............................................................................................................................ 17
Starting up the projector ........................................................................................................................17
Using the menus ....................................................................................................................................... 18
Securing the projector ............................................................................................................................19
Switching input signal ...............................................................................................................................20
Shutting down the projector .................................................................................................................21
Direct power off ......................................................................................................................................21
Menu operation ................................................................................................................... 22
Basic menu ...............................................................................................................................................22
Advanced menu ..................................................................................................................................... 24
Maintenance ........................................................................................................................ 32
Care of the projector ..............................................................................................................................32
Lamp information .....................................................................................................................................32
Troubleshooting ................................................................................................................. 38
Specifications ...................................................................................................................... 39
Projector specifications ..........................................................................................................................39
Dimensions ................................................................................................................................................40
Timing chart............................................................................................................................................... 41

4 Important safety instructions
Important safety instructions
Your projector is designed and tested to meet the latest standards for safety of information technology
equipment. However, to ensure safe use of this product, it is important that you follow the instructions
mentioned in this manual and marked on the product.
1. Please read this manual before you
operate your projector. Save it for future
reference.
2. Do not look straight at the projector
lens during operation. The intense light
beam may damage your eyes.
3. Refer servicing to qualified service
personnel.
4. Always open the lens shutter (if any) or
remove the lens cap (if any) when the
projector lamp is on.
5. The lamp becomes extremely hot during
operation. Allow the projector to cool for
approximately 45 minutes prior to removing
the lamp assembly for replacement.
6. In some countries, the line voltage is NOT
stable. This projector is designed to operate
safely within a mains voltage between 100 to
240 volts AC, but could fail if power cuts or
surges of ±10 volts occur. In areas where
the mains voltage may fluctuate or cut
out, it is recommended that you
connect your projector through a power
stabilizer, surge protector or
uninterruptible power supply (UPS).
7. Do not block the projection lens with any
objects when the projector is under
operation as this could cause the objects to
become heated and deformed or even cause a
fire. To temporarily turn off the lamp, use the
blank function.
8. Do not operate lamps beyond the rated lamp
life. Excessive operation of lamps beyond the
rated life could cause them to break on rare
occasions.

5Important safety instructions
9. Never replace the lamp assembly or any
electronic components unless the projector is
unplugged.
10. Do not place this product on an unstable cart,
stand, or table. The product may fall,
sustaining serious damage.
11. Do not attempt to disassemble this projector.
There are dangerous high voltages inside
which may cause death if you should come
into contact with live parts. The only user
serviceable part is the lamp which has its own
removable cover.
Under no circumstances should you ever
undo or remove any other covers. Refer
servicing only to suitably qualified professional
service personnel.
12. Do not block the ventilation holes.
- Do not place this projector on a blanket, bedding or
any other soft surface.
- Do not cover this projector with a cloth or any other
item.
- Do not place inflammables near the projector.
If the ventilation holes are seriously
obstructed, overheating inside the projector
may result in a fire.
13. Always place the projector on a level,
horizontal surface during operation.
- Do not use if tilted at an angle of more than 10
degrees left to right, nor at angle of more than 15
degrees front to back. Using the projector when it is
not fully horizontal may cause a malfunction of, or
damage to, the lamp.
14. Do not stand the projector on end vertically.
Doing so may cause the projector to fall over,
causing injury or resulting in damage to the
projector.
15. Do not step on the projector or place any
objects upon it. Besides probable physical
damage to the projector, doing so may result
in accidents and possible injury.
16. When the projector is under operation, you
may sense some heated air and odor from its
ventilation grill. It is a normal phenomenon
and not a product defect.

6 Important safety instructions
17. Do not place liquids near or on the projector.
Liquids spilled into the projector may cause it
to fail. If the projector does become wet,
disconnect it from the power supply's power
outlet and call BenQ to have the projector
serviced.
18. This product is capable of displaying inverted
images for ceiling/wall mount installation.
19. This apparatus must be earthed.
20. Do not place this projector in any of the
following environments.
- Space that is poorly ventilated or confined. Allow at
least 50 cm clearance from walls and free flow of air
around the projector.
- Locations where temperatures may become
excessively high, such as the inside of a car with all
windows rolled up.
- Locations where excessive humidity, dust, or cigarette
smoke may contaminate optical components, shorten
the projector's life span and darken the image.
- Locations near fire alarms
- Locations with an ambient temperature above 40°C /
104°F
- Locations where the altitudes are higher than 3000 m
(10000 feet).
Hg - Lamp contains mercury. Manage in accordance with local disposal laws. See www.lamprecycle.org.
To avoid damaging the DLP chips, never aim a high-power laser beam into the projection lens.
3000 m
(10000 feet)
0 m
(0 feet)

7Introduction
Introduction
Shipping contents
Carefully unpack and verify that you have all of the items shown below. If any of these items are missing,
please contact your place of purchase.
Standard accessories
Optional accessories
Replacing the remote control batteries
1. Press and slide off the battery cover, as illustrated.
2. Remove the old batteries (if applicable) and install two
AAA batteries. Make sure that the positive and negative
ends are positioned correctly, as illustrated.
3. Slide the battery cover in until it clicks into place.
Projector Remote control with
batteries Quick start guide
Warranty card* Power cord
• The supplied accessories will be suitable for your region, and may differ from those illustrated.
• *The warranty card is only supplied in some specific regions. Please consult your dealer for detailed information.
1. Spare lamp kit
2. 3D glasses
3. PointWrite kit
4. Dust filter
• Avoid leaving the remote control and batteries in an excessive heat or humid environment like the kitchen,
bathroom, sauna, sunroom or in a closed car.
• Replace only with the same or equivalent type recommended by the battery manufacturer.
• Dispose of the used batteries according to the manufacturer's instructions and local environment regulations for
your region.
• Never throw the batteries into a fire. There may be danger of an explosion.
• If the batteries are dead or if you will not be using the remote control for an extended period of time, remove the
batteries to avoid damage to the remote control from possible battery leakage.
Digital Projector
Quick Start Guide

8 Introduction
Projector exterior view
1. Focus ring
2. Vent (air exhaust)
3. Adjuster feet
4. Projection lens
5. IR remote sensor
6. External control panel
(See Controls and functions on page 9.)
7. Lamp cover
8. Vent (air inlet)
9. USB Type A port (Power for Touch kit)
10. USB Mini-B port
11. RGB (PC) signal input jacks
12. RGB (PC) signal output jack
13. RS-232 control port
14. AC power jack
15. Kensington anti-theft lock slot
16. Wall mount holes
17. PointWrite module holes
7
6
14
15
16
16
16
8
3
3
3
3
5
4
1
10
11
12
13
2
17
9

9Introduction
Controls and functions
Projector & Remote control
1. POWER
Toggles the projector between standby mode
and on.
ON/ Off
Toggles the projector between standby mode
and on.
2. POWER indicator light/TEMPerature
warning light/LAMP indicator light
(See Indicators on page 37.)
3. IR remote sensor
4. BACK
Goes back to previous OSD menu, exits and
saves menu settings.
5. Arrow keys ( , , , )
When the On-Screen Display (OSD) menu is
activated, these keys are used as directional
arrows to select the desired menu items and
to make adjustments.
Keystone keys ( , )
Displays the keystone correction page.
Volume keys /
(No function.)
2
9
7
6
8
5
1
3
4
10
• All the key presses described in this
document are available on the remote control
or projector.
• The remote control is without laser pointer
in Japan
11
1
5
4
14
8
12
13
16
15
6
9
19
20
22
18
7
17
10
21
INFO

10 Introduction
6. SOURCE
Displays the source selection bar.
7. ECO BLANK
Used to hide the screen picture.
Do not block the projection lens from
projecting as this could cause the blocking
object to become heated and deformed or
even cause a fire.
8. OK
Confirms the selected On-Screen Display
(OSD) menu item.
9. AUTO
Automatically determines the best picture
timings for the displayed image when PC signal
(analog RGB) is selected.
10. MENU
Turns on the On-Screen Display (OSD) menu.
11. Source selection buttons
Only PC 1 is available.
12.
(No function.)
13. MHL control buttons
( Previous, Play/Pause, Next,
Rewind, Stop, Fast-forward)
(No function.)
14. LASER
Emits visible laser pointer light for
presentation purposes.
15. ZOOM+/ZOOM-
Magnifies or reduces the projected picture
size.
16. PAGE /PAGE
Operate your display software program (on a
connected PC) which responds to page
up/down commands (like Microsoft
PowerPoint).
17. INFO
Displays the projector information.
18. FREEZE
Freezes the projected image.
19. ASPECT
Selects the display aspect ratio.
20. MODE
Selects an available picture setup mode.
21. SMART ECO
Displays the Lamp Mode menu for selecting
a suitable lamp operating mode.
22. QUICK INSTALL
Quickly selects several functions to adjust the
projected image and displays the test pattern.
Operating the LASER pointer
The Laser Pointer is a presentation
aid for professionals. It emits red
colored light when you press it. The
laser beam is visible. It is necessary to
press and hold LASER for
continuous output.
The laser pointer is not a toy. Parents
should be mindful of the dangers of
laser energy and keep this remote
control out of the reach of children.
Do not look into the laser light window or
shine the laser light beam on yourself or others.
See the warning messages on the back of the
remote control prior to using it.

11Introduction
Remote control effective range
The remote control must be held at an angle within 30 degrees perpendicular to the projector's IR
remote control sensor(s) to function correctly. The distance between the remote control and the
sensor(s) should not exceed 8 meters (~ 26 feet).
Make sure that there are no obstacles between the remote control and the IR sensor(s) on the
projector that might obstruct the infra-red beam.
• Operating the projector from the front • Operating the projector from the top
Approx.+30º
Approx.+30º

12 Positioning your projector
Positioning your projector
Choosing a location
Before choosing an installation location for your projector, take the following factors into consideration:
• Size and position of your screen
• Electrical outlet location
• Location and distance between the projector and the rest of your equipment
You can install your projector in the following ways.
After turning on the projector, go to Advanced Menu - Settings > Projector Installation >
Projector Installation and press / to select a setting.
You can also use QUICK INSTALL on the remote control to access this menu.
1. Front Table
Select this location with the projector placed on
the table in front of the screen. This is the most
common way to position the projector for quick
setup and portability.
2. Rear Table
Select this location with the projector placed on
the table behind the screen. Note that a special
rear projection screen is required.
3. Front Ceiling
Select this location with the projector suspended
upside-down in front of the screen. Purchase the
BenQ Projector Ceiling/Wall Mount Kit from your
dealer to mount your projector.
4. Rear Ceiling
Select this location with the projector suspended
upside-down from behind the screen. Note that a
special rear projection screen and the BenQ
Projector Ceiling/Wall Mount Kit are required for
this installation location.

13Positioning your projector
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting (if available), and the content
format each factors in the projected image size.
Projection dimensions
• The screen aspect ratio is 4:3 and the projected picture is in a 4:3 aspect ratio
For example, if you are using a 120-inch screen, the recommended projection distance is 1487 mm.
If your measured projection distance is 1000 mm, the closest match in the "Distance from screen (mm)"
column is 992 mm. Looking across this row shows that a 80'' (about 2.0 m) screen is required.
Mounting the projector
If you intend to mount your projector, we strongly recommend that you use a proper fitting BenQ
projector mounting kit and that you ensure it is securely and safely installed.
If you use a non-BenQ brand projector mounting kit, there is a safety risk that the projector may fall
down due to an improper attachment through the use of the wrong gauge or length screws.
Before mounting the projector
• Purchase a BenQ projector mounting kit from the place you purchased your BenQ projector.
• BenQ recommends that you also purchase a separate Kensington lock compatible security cable and
attach it securely to both the Kensington lock slot on the projector and the base of the mounting
bracket. This will perform the secondary role of restraining the projector should its attachment to the
mounting bracket become loose.
Screen size Distance from screen
(mm) Offset (mm)Diagonal H (mm) W (mm)
Inch mm
60 1524 914 1219 744 137
70 1778 1067 1422 868 160
80 2032 1219 1626 992 183
90 2286 1372 1829 1116 206
100 2540 1524 2032 1240 229
110 2794 1676 2235 1363 251
120 3048 1829 2438 1487 274
All measurements are approximate and may vary from the actual sizes.
BenQ recommends that if you intend to permanently install the projector, you should physically test the projection
size and distance using the actual projector in situ before you permanently install it, so as to make allowance for this
projector's optical characteristics. This will help you determine the exact mounting position so that it best suits your
installation location.
H
WProjection distance
Center of lens
Screen
4:3 Screen diagonal
Offset

14 Positioning your projector
• Ask your dealer to install the projector for you. Installing the projector on your own may cause it to
fall and result in injury.
• Take necessary procedures to prevent the projector from falling off such as during an earthquake.
• The warranty doesn’t cover any product damage caused by mounting the projector with a non-BenQ
brand projector mounting kit.
• Consider the surrounding temperature where the projector is ceiling/wall mounted. If a heater is used,
the temperature around the ceiling/wall may be higher than expected.
• Read the user manual for the mounting kit about the range of torque. Tightening with torque
exceeding the recommended range may cause damage to the projector and subsequently falling off.
• Make sure the power outlet is at an accessible height so that you can easily shut down the projector.
Ceiling/Wall mount installation diagram
Adjusting the projected image
Adjusting the projection angle
If the projector is not placed on a flat surface or the
screen and the projector are not perpendicular to
each other, the projected image becomes
trapezoidal. You can screw the adjuster feet to
fine-tune the horizontal angle.
To retract the feet, screw the adjuster feet in a
reverse direction.
Auto-adjusting the image
In some cases, you may need to optimize the picture quality. To do this, press AUTO. Within 3
seconds, the built-in Intelligent Auto Adjustment function will re-adjust the values of Frequency and
Clock to provide the best picture quality.
Do not look into the lens while the lamp is on. The strong light from the lamp may cause damage to your eyes.
Ceiling/Wall mount screw: M4
(Max L = 25 mm; Min L = 20 mm)
Unit: mm
75146
100 75 27

15Positioning your projector
The current source information will be displayed in the corner of the screen for 3 seconds.
Fine-tuning the image clarity
Correcting keystone
Keystoning refers to the situation where the projected image becomes a trapezoid due to angled
projection.
To correct this, you will need to manually correct it following these steps.
1. Do one of the following steps to display the keystone
correction page.
• Press / on the projector or remote control.
• Press QUICK INSTALL on the remote control. Press to
highlight Keystone and press OK.
• Go to Advanced Menu - Display > Keystone and press OK.
2. After the Keystone correction page displays. Press to correct keystoning at the top of the
image. Press to correct keystoning at the bottom of the image.
This function is only available when PC signal (analog RGB) is selected.
Sharpen the image by rotating the focus ring.
Press .Press .

16 Connection
Connection
When connecting a signal source to the projector, be sure to:
1. Turn all equipment off before making any connections.
2. Use the correct signal cables for each source.
3. Ensure the cables are firmly inserted.
• In the connections above, some cables may not be included with the projector (see Shipping contents on page 7).
They are commercially available from electronics stores.
• The connection illustrations are for reference only. The rear connecting jacks available on the projector vary with
each projector model.
• Many notebooks do not turn on their external image output ports when connected to a projector. Usually a key
combo like FN + function key with a monitor symbol turns the external display on/off. Press FN and the labeled
function key simultaneously. Refer to your notebook's documentation to find your notebook's key combination.
1
3 1
2
VGA cable
USB cable
USB cable (A to mini
B type) connect
to Touch Module
1
2
3
Notebook or
desktop computer Monitor
Touch
module

17Operation
Operation
Starting up the projector
1. Plug the power cord. Turn on the power outlet switch
(where fitted). The power indicator on the projector
lights orange after power has been applied.
2. Press on the projector or on the remote
control to start the projector. The power indicator
flashes green and stays green when the projector is on.
The start up procedure takes about 30 seconds. In the
later stage of start up, a startup logo is projected.
(If necessary) Rotate the focus ring to adjust the image
clearness.
3. If the projector is activated for the first time, select your
OSD language following the on-screen instructions.
4. If you are prompted for a password, press the arrow keys
to enter a 6-digit password. See Utilizing the password
function on page 19.
5. Switch all of the connected equipment on.
6. The projector will search for input signals. The current
input signal being scanned appears. If the projector does
not detect a valid signal, the message “No Signal” will
continue displaying until an input signal is found.
You can also press SOURCE to select your desired input signal. See Switching input signal on page
20.
• Please use the original accessories (e.g. power cord) to avoid possible dangers such as electric shock and fire.
• If the projector is still hot from previous activity, it will run the cooling fan for approximately 90 seconds before
energizing the lamp.
• The Setup Wizard screenshots are for reference only and may differ from the actual design.
• If the frequency/resolution of the input signal exceeds the projector's operating range, you will see the message
“Out of Range” displayed on the background screen. Please change to an input signal which is compatible with
the projector's resolution or set the input signal to a lower setting. See Timing chart on page 41.
• If no signal is detected for 3 minutes, the projector automatically enters saving mode.

18 Operation
Using the menus
The projector is equipped with 2 types of On-Screen Display (OSD) menus for making various
adjustments and settings.
• Basic OSD menu: provides primary menu functions. (See Basic menu on page 22)
• Advanced OSD menu: provides full menu functions. (See Advanced menu on page 24)
To access the OSD menu, press MENU on the projector or remote control.
• Use the arrow keys ( / / / ) on the projector or remote control to move through the menu items.
• Use OK on the projector or remote control to confirm the selected menu item.
The first time you use the projector (after finishing the initial setup), Basic OSD menu displays.
Below is the overview of the Basic OSD menu.
If you intend to switch from the Basic OSD menu to the Advanced OSD menu, follow the
instructions below:
1. Go to Basic Menu > Menu Type.
2. Press OK and press / to select Advanced. Next time when you turn on the projector, you
may access the Advanced OSD menu by pressing MENU.
Below is the overview of the Advanced OSD menu.
The OSD screenshots below are for reference only, and may differ from the actual design.
Menu Type Press OK to enter
the menu.
Main menu Status
Current input
signal
Press MENU to go
to the previous page
or to exit.
Main menu
& Main
menu icon
Press BACK to go
to the previous
page.
Sub-menu
Press MENU to
go to the previous
page or to exit.
Current
input signal Status
Press OK
to enter the
menu.
Basic Menu
Brightness
Aspect Ratio
2
1
2
6
Lamp Mode
Picture Mode
Information
Menu Type
Auto
Presentation
SmartEco
Enter Exit
5
3
4
1
4
2
5
3
6
Picture
Picture Mode
Brightness
Contrast
Color
Sharpness
Off
Reference Mode
1
7
6
Brilliant Color
Advanced Color Settings
Display
Settings
Information
Enter Exit
Return
Presentation
Presentation
Reset Picture
System
2
3
45
1
5
2
6
3
7
4

19Operation
Likewise, when you wish to switch from the Advanced OSD menu to the Basic OSD menu, follow
the instructions below:
1. Go to Advanced Menu - System > Menu Settings and press OK.
2. Select Menu Type and OK.
3. Press / to select Basic. Next time when you turn on the projector, you may access the Basic
OSD menu by pressing MENU.
Securing the projector
Using a security cable lock
The projector has to be installed in a safe place to prevent theft. Otherwise, purchase a lock, such as
the Kensington lock, to secure the projector. You can locate a Kensington lock slot on the rear side of
the projector. See item 15 on page 8.
A Kensington security cable lock is usually a combination of key(s) and the lock. Refer to the lock’s
documentation for finding out how to use it.
Utilizing the password function
Setting a password
1. Go to Advanced Menu - Settings > Security Settings. Press OK. The Security Settings
page appears.
2. Highlight Change Password and press OK.
3. The four arrow keys ( , ,, ) respectively represent
4 digits (1, 2, 3, 4). According to the password you desire
to set, press the arrow keys to enter six digits for the
password.
4. Confirm the new password by re-entering the new
password.
Once the password is set, the OSD menu returns to the
Security Settings page.
5. To activate the Power On Lock function, press / to
highlight Power On Lock and press / to select On. Input the password again.
If you forget the password
If you enter the wrong password, the password error
message will appear, and the Input Current Password
message follows. If you absolutely do not remember the
password, you can use the password recall procedure. See
Entering the password recall procedure on page 20.
If you enter an incorrect password 5 times in succession, the
projector will automatically shut down in a short time.
• The digits being input will display as asterisks on-screen. Make a note of your selected password and keep it in a
safe place in advance or right after the password is entered so that it is available to you should you ever forget it.
• Once a password has been set and the power on lock is activated, the projector cannot be used unless the
correct password is entered every time the projector is started.
Input New Password
Return
Password Error
Please try again.

20 Operation
Entering the password recall procedure
1. Press and hold AUTO for 3 seconds. The projector will
display a coded number on the screen.
2. Write down the number and turn off your projector.
3. Seek help from the local BenQ service center to decode
the number. You may be required to provide proof of
purchase documentation to verify that you are an
authorized user of the projector.
Changing the password
1. Go to Advanced Menu - Settings > Security Settings > Change Password.
2. Press OK. The message “Input Current Password” appears.
3. Enter the old password.
• If the password is correct, another message “Input New Password” appears.
• If the password is incorrect, the password error message will appear, and the message “Input
Current Password” appears for your retry. You can press BACK to cancel the change or try
another password.
4. Enter a new password.
5. Confirm the new password by re-entering the new password.
Disabling the password function
To disable password protection, go to Advanced Menu - Settings > Security Settings > Power
On Lock and press OK. Press / to select Off. The message “Input Current Password” appears.
Enter the current password.
• If the password is correct, the OSD menu returns to the Security Settings page. You will not
have to enter the password next time turning on the projector.
• If the password is incorrect, the password error message will appear, and the message “Input
Current Password” appears for your retry. You can press BACK to cancel the change or try
another password.
Switching input signal
The projector can be connected to multiple devices at the same time.
However, it can only display one full screen at a time. When starting
up, the projector automatically searches for the available signals.
Be sure the Advanced Menu - Settings > Auto Source Search
menu is On if you want the projector to automatically search for the
signals.
To select the source:
1. Press SOURCE. A source selection bar appears.
2. Press /until your desired signal is selected and press OK.
Once detected, the selected source information will appear at the corner of the screen for seconds.
If there is multiple equipment connected to the projector, repeat steps 1-2 to search for another
signal.
Though the password function is disabled, you need to keep the old password in hand should you ever need to
re-activate the password function by entering the old password.
Please write down the recall code, and contact
BenQ Customer Center.
Recall Code:
Recall Password
Return