Page 1
Epson PowerLite 835p
Air
exhaust
vent
Foot release
lever
Lens cover
RS-232
serial port
Adjustable
foot
Type B
USB port
Type A
USB port
Type II
PCMCIA
Card slot
Control
panel
Remote
control
receiver
Ethernet
port
Power button
Handle
Remote control
receiver
Security lock
Air filter
Contrast ratio 600:1
Image size 30 to 300 inches
Projection distance 2.8 to 48.3 feet (0.8 to 11 meters)
Projection methods Front, rear, upside-down front
(ceiling mount), and upside-down rear
Internal sound
system 5 W monaural
Optical aspect ratio 4:3 (horizontal:vertical)
Zoom ratio 1:1.6
Noise level 28 dB in low brightness mode or
34 dB in high brightness mode
Keystone correction Automatic (vertical only); manual
adjustment capability ±45° (vertical),
±25° (horizontal)
Projection Lamp
Type UHE (Ultra High Efficiency)
Power consumption 200 W
Lamp life About 2000 hours (when
Control
is set to High) and about 3000
hours (when
to
Low)
Brightness Control is set
Brightness
Part number V13H010L31
AC
power
inlet
Audio
Out port
Monitor
Out port
Video
port and
related
Audio
ports
Computer2/
Component
port and related
Audio port
S-Video port and
related Audio
ports
Computer 1/
Component
port and related
Audio port
Rear adjustable
foot
Remote port
Projector Specifications
General
Type of display Poly-silicon Thin Film Transistor
(TFT), active matrix
Size of LCD panels Diagonal: 0.8 inch (20.3 mm)
Resolution 1024
Color reproduction 24 bit, 16.8 million colors
Brightness (ANSI) 3000 lumens in high brightness mode
× 768 pixels (XGA, native format)
2200 lumens in low brightness mode
Remote Control
Range 33 feet (10 meters)
Batteries (2) Alkaline AA
Mouse Compatibility
Supports USB
Dimensions
Height 4.6 inches (117 mm), feet retracted
Width 14.4 inches (365 mm)
Depth 11.0 inches (280 mm)
Weight 10.4 lb (4.7 kg)
Electrical
Rated frequency 50 to 60 Hz AC
Power supply 100 to 120 VAC, 3.6 A
200 to 240 VAC, 1.6 A
Power
consumption Operating: 310 W
Standby: 1.5 W with Network OFF
47 W with Network ON
Environmental
Temperature Operating: 41 to 95 °F (5 to 35 °C)
10/04 Epson PowerLite 835p - 1
Page 2
Epson PowerLite 835p
Storage: 14 to 140 °F (–10 to 60 °C)
Humidity Operating: 20 to 80% RH,
non-condensing
Storage: 10 to 90% RH,
non-condensing
Safety
United States FCC 47CFR Part 15B Class B (DoC)
UL1950 Rev. 3
Canada ICES-003 Class B
CSA C22.2 No. 950-95 (cUL)
CE Marking Directive 73/23/EEC, 89/336/EEC
EN 55022, EN 55024
Compatible Video Formats
You can use any of the following video sources: VCR, DVD
player, camcorder, digital camera, gaming console, or laser
disc player. The projector supports composite video, S-video,
component video, and RGB video, and it automatically senses
the video format (HDTV, NTSC, PAL, or SECAM).
The projector supports these international video standards:
Mode Refresh rate (Hz)
NTSC
NTSC 4:43
PAL
N-PAL
M-PAL
PAL—60
SECAM
HDTV (720p)
HDTV (1080i)
SDTV (480i)
SDTV (480p)
SDTV (625i)
SDTV (625p)
60
60
50
50
60
60
50
60
60
60
60
50
50
Compatible Computer Display Formats
You can connect the projector to a wide range of computers,
including PCs and laptops, Apple Macintosh,
Macintosh
iBook
Sun
®
series, PowerBook® computers, many iMac® and
®
series systems, and high-end workstations such as the
®
SPARCstation.
™
Although images are displayed at the projector’s native
resolution of 1024 × 768 pixels, Epson’s patented SizeWise
®
Power
™
chip supports computer display formats ranging from VGA
through UXGA.
To project images output from a computer, the computer’s
external monitor signal must be set at a refresh rate (vertical
frequency) that’s compatible with the projector; see the
following table for compatible formats. For best results, the
computer’s resolution should be set to match the projector’s
native resolution (1024
Mode Refresh rate (Hz) Resolution
VGA EGA 70 640 × 350
VGA—60
VESA—72
VESA—75
VESA—85
SVGA—56
SVGA—60
SVGA—72
SVGA—75
SVGA—85
SVGA—120
XGA—60
XGA—70
XGA—75
XGA—85
XGA—100
XGA—120
SXGA1—70
SXGA1—75
SXGA1—85
SXGA1—100
SXGA2—60
SXGA2—75
SXGA2—85
SXGA3—60
SXGA3—75
SXGA3—85
UXGA—60
UXGA—65
UXGA—70
UXGA—75
UXGA—80
UXGA—85
MAC13
MAC16
MAC19
MAC21
* The image is resized using Epson’s SizeWise technology.
× 768).
60
72
75
85
56
60
72
75
85
120
60
70
75
85
100
120
70
75
85
100
60
75
85
60
75
85
60
65
70
75
80
85
67
75
75
75
640 × 480
640 × 480
640 × 480
640 × 480
800 × 600
800 × 600
800 × 600
800 × 600
800 × 600
800 × 600
1024 × 768
1024 × 768
1024 × 768
1024 × 768
1024 × 768
1024 × 768
1152 × 864
1152 × 864
1152 × 864
1152 × 864
1280 × 960
1280 × 960
1280 × 960
1280 × 1024
1280 × 1024
1280 × 1024
1600 × 1200
1600 × 1200
1600 × 1200
1600 × 1200
1600 × 1200
1600 × 1200
640 × 480
832 × 624
1024 × 768
1152 × 870
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
2 - Epson PowerLite 835p 10/04
Page 3
Epson PowerLite 835p
Positioning the Projector
Follow these guidelines:
❏ Place the projector on a sturdy, level surface between
2.8 and 48.3 feet from the screen. Image size generally
increases with distance, but may vary depending on the
position of the zoom ring and other settings.
29.8 to 48.3 ft
2.8 to 4.7 ft5.8 to 9.5 ft
❏ Place it within 10 feet of an electrical outlet or extension
cord and 5 feet of your computer or video source.
❏ Allow space for ventilation around and under the projector.
❏ To avoid a keystone shaped image (an image that is wider
on one side), place the projector directly in front of the
center of the screen, facing the screen squarely.
❏ If possible, place the projector level with the bottom of the
screen.
If you place the projector too far below the screen, you may
have to tilt it up by extending the front adjustable foot (see
page 7). This causes the projected image to lose its shape, but
the projector automatically compensates. If the image is still
not square, adjust it manually by pressing the
buttons (see page 7) or using Quick Corner (see page 8).
If you place the projector higher than the bottom of the
screen, the image will be square, but it won’t fill the screen.
Calculating Image Size and Projection Distance
Use the formulas below to find out how large the image will
be when you know the distance from projector to screen, or to
find out how far from the screen to place the projector if you
want an image of a certain size. Since you can change the
image size by adjusting the zoom, formulas are given for
calculating both minimum and maximum sizes.
Note: Formulas given here apply only when the image is not
tilted. If you tilt the image up by extending the projector’s foot or
using electronic keystone correction, your image size may vary.
Distance
from screen
Keystone
❏ Maximum diagonal size =
(projection distance[inches] x 2.54 x 0.32827 + 1.6767)
❏ Minimum diagonal size =
(projection distance[inches] x 2.54 x 0.203 + 1.077)
To determine the projection distance (in inches) when you
know the diagonal size of the screen image:
❏ Maximum projection distance =
((diagonal size[inches] x 4.92611) - 5.30542) / 2.54
❏ Minimum projection distance =
((diagonal size[inches] x 3.04627) - 5.10769) / 2.54
Connecting the Projector
You can connect the projector to two computer sources or
four video sources—up to a total of four sources. You can
include an independent sound channel for each source. (See
the User’s Guide for complete setup instructions.) Using
EasyMP,
view images on a memory card or digital camera.
Note: The preview feature lets you see all the sources at a glance,
so you can easily switch to the one you want. See page 5.
Types of Connections
The following connections are possible, depending on the
signal your equipment generates and its available output ports.
Computer equipment
Video equipment
Note that the projector’s
input signals. If you’re connecting to one of these ports, you’ll
need to make sure that the correct input signal setting is
selected or your image won’t display properly.
®
you can also connect over a wireless network, or
Output signal Required cable
Analog RGB video
DVI DVI to VGA cable
Output signal Required cable
Composite video RCA video cable
S-video S-video cable
Component video Component to VGA cable
RGB video VGA cable
VGA cable
VGA-to-BNC cable
Computer ports accept a variety of
To determine the diagonal size of an image (in inches) when
you know the projection distance:
10/04 Epson PowerLite 835p - 3
Page 4
Epson PowerLite 835p
Playing Sound Through the Projector
You can play sound through the projector’s speaker system or
attach an external speaker system.
To play sound through the projector, use one of the following
cables that came with your projector:
❏ If you have a computer or video equipment connected to
one of the
Computer/Component ports, use a stereo mini-
jack cable. Connect one end to the correct Audio port and
the other end to the audio-output connector on your
equipment.
❏ If you have a computer or video equipment connected to
the
Video or S-Video port, use an RCA-style audio cable.
Connect one end to the correct port and the other end to
the audio-output connector on your equipment.
Use with Computer or
Component connection
Use with
Video
connection
To connect external speakers, use the
Use with
S-Video
connection
Audio Out port on the
back of the projector. You may be able to use a commercially
available audio cable with a stereo mini-jack connector on one
end and pin jacks on the other, or you may have to purchase a
special cable or use an adapter, depending on your stereo
system. See the User’s Guide for more information.
Using the Remote Control as a Wireless Mouse
If you’ve connected a computer to the projector, you can
use the projector’s remote control as a wireless mouse by
connecting the USB cable that came with the projector to
the projector’s
is supported on systems with a USB port running Windows
Type B USB port. The wireless mouse function
®
98, 2000, Me, or XP, Macintosh OS 8.6 to 9.x, or Macintosh
OS X 10.2 or later. See the User’s Guide for more information.
Starting Up the Projector
If you turn on your computer or video equipment before the
projector, the projector automatically selects the connected
source. If you turn on the projector first or you have multiple
sources connected, you may have to switch to the desired
source manually (see “Selecting the Image Source” below).
Turning On the Projector
1. Remove the lens cap.
2. Plug in the projector.
3. Wait a few seconds until the projector’s
flashing and turns orange.
4. Press the red P
Power button on top of the projector or on
the remote control.
Note: If you’re using the remote
control, make sure batteries are
installed and the power switch on
the side of the remote control is
turned on.
The projector’s
Power light flashes green as it warms up,
and an image begins to appear after about 30 seconds.
When the
Power light stops flashing and remains green,
the projector is ready for use.
Wa rn in g: Never look into the lens when the lamp is on. This
can damage your eyes.
5. If you’ve connected a Windows-based computer to the
projector, you may see a New Hardware Wizard telling you
that your computer has found a plug-and-play monitor; if
so, click
Cancel.
Selecting the Image Source
If multiple devices are connected to the projector, you can use
the
Source buttons on the projector or the remote control to
switch from one source to another:
❏ You can press the
Source Search button on the projector’s
control panel or the remote to find the connected
equipment automatically.
Power light stops
Power button
4 - Epson PowerLite 835p 10/04
Page 5
Epson PowerLite 835p
❏ The projector’s control panel has two
Use the
Computer/Component
button to switch between EasyMP,
Source buttons.
™
and equipment connected to the
Computer ports.
Use the
Video/S-Video button
to switch between equipment
connected to the
S-Video ports.
Video and
❏ The remote control has five
Source buttons. Use them to
switch between equipment
connected to the port identified on
each button, or select
EasyMP to
project wirelessly or from a
memory card.
You can preview all sources to help you select the desired
source, as described below.
The
Computer/Component ports can be set up to use different
input signals, so if you have equipment connected to one of
these ports, be sure to select the correct signal to match the
equipment you’re using. You can change the input signal
settings using the projector’s menu system.
Previewing Image Sources
Use the preview function to select the image source when you
have connected multiple sources to the projector.
1. Press the
Preview button on the
remote control.
You see the currently selected
source displayed on the screen,
Preview
as shown below. Other sources
(including the currently selected source) appear in smaller
preview windows on the right and bottom of the screen.
.
Currently selected source
Computer (Analog-RGB)
Note: Movies are displayed as still images on the preview
screen.
2. Press the corresponding
control to switch to the desired source. Or press the
Source button on the remote
Esc
button to exit the preview screen without switching sources.
Note: A red border surrounds the preview window for the
currently selected source. You can use the pointer button on
the remote control to select a different source, and then press
Enter to display it.
What To Do If You See a Blank Screen
If you see a blank screen or a blue screen with the message
No Signal after turning on your computer or video source, try
the following:
❏ Make sure the cables are connected correctly.
❏ Make sure the
Power light is green and not flashing and the
lens cover is off.
❏ Try restarting your computer.
❏ Press the correct
Source button on top of the projector or
on the remote control. (Allow a few seconds for the
projector to sync up after pressing the button.)
If you’re using a PC laptop:
❏ Hold down the Fn key and press the function key that lets
you display on an external monitor. It may have an icon
such as or it may be labeled
CRT/LCD. Allow a few
seconds for the projector to sync up after pressing it. Check
your laptop’s manual or online help for details.
On most systems, the or
CRT/LCD key lets you
toggle between the LCD screen and the projector, or
display on both at the same time.
❏ Depending on your computer’s video card, you might need
to use the Display utility in the Windows Control Panel to
make sure that both the LCD screen and external monitor
port are enabled. See your computer’s documentation or
online help for details.
Computer
DVI
BNC
S-Video
Video
Preview windows
If no equipment is connected to a port, or if there is no
incoming signal, the preview window for that source
appears blank.
10/04 Epson PowerLite 835p - 5
Page 6
Epson PowerLite 835p
If you’re using a laptop with Macintosh OS X:
You may need to set up your system to display on the
projector screen as well as the LCD screen. Follow these steps:
1. From the Apple menu, select
select
Displays.
2. Click the
Make sure
Mirror Displays
is checked
3. Make sure the
If you’re using a laptop with Macintosh OS 9.x:
Arrangement or Arrange tab.
Mirror Displays checkbox is selected.
System Preferences, then
You may need to set up your system to display on the
projector screen as well as the LCD screen. Follow these steps:
1. From the Apple menu, select
Monitors or Monitors and Sound.
2. Click the
Click here
Arrange icon.
Control Panels, then click
If the
Arrange option isn’t available, do the following:
1. Click the
2. Select a
Monitor icon if necessary.
Click here
Select a
Simulscan
resolution
Simulscan resolution as shown. (Allow a few
seconds for the projector to sync up.)
Adjusting the Image
Once you see your image, you may need to make certain
adjustments.
Using Quick Setup
You can use the
remote control to quickly and automatically set up the
projector’s focus, zoom, and screen shape, as well as the Wall
Shot setting. All you need to do is position your projector and
press
Quick Setup. Make sure you enable Quick Setup for all
of the settings you want to use, as described in the User’s
Guide.
Quick Setup button on the projector or the
Drag one monitor
icon on top of the
other
3. Drag one monitor icon on top of the other.
6 - Epson PowerLite 835p 10/04
Quick Setup
Focusing and Zooming Your Image
Use the
Focus buttons on the projector or remote to sharpen
the image.
Page 7
Epson PowerLite 835p
Use the
enlarge the image. Press the
Zoom buttons on the projector or remote to reduce or
W button on the projector or the
top zoom button on the remote to increase the size, or the
T button on the projector or bottom zoom button on the
remote to decrease it.
Focus Zoom
If the image still isn’t large enough, you may need to move the
projector farther away from the screen. You can also use the
E-Zoom buttons on the remote control to zoom in on a
portion of the image.
Adjusting the Height of Your Image
If the image is too low on the screen, you can raise it by
adjusting the front foot:
1. Stand behind the projector. Press up on the blue foot
release lever and lift the front of the projector.
Adjusting the Image Shape
In most cases, you can maintain a rectangular image by
placing the projector directly in front of the center of the
screen with the base of the lens level with the bottom of the
screen.
Even if the projector is slightly tilted (within a range of 45°
up or down), the projector’s automatic keystone correction
function detects and corrects vertical keystone distortion.
Corrected imageProjector tilted up Projector tilted down
It takes about one second after projection starts for the image
to be corrected. During this time, a vertical keystone
correction gauge appears on the screen.
If your image is still distorted, you can correct it using either
of these methods:
❏ If the image has two parallel
sides but is wider on the top,
bottom, left, or right, you can
correct it using the
Keystone
Keystone correction
buttons on the projector’s
control panel or the Keystone
menu (see the next section).
❏ If the image has no parallel
sides, you can adjust its shape
using Quick Corner
™
(see
Keystone correction
page 8).
You cannot use both keystone
correction and Quick Corner at
Quick Corner correction
the same time.
2. Once the image is positioned where you want it, release the
lever to lock the foot in position.
3. If necessary, you can fine-tune the height by turning the
projector’s rear feet.
Projector foot
Raising the projector causes the image to distort or
“keystone,” but you can manually correct the shape as
described in the next section.
Using Keystone Correction
To adjust your image when it is wider on one side, do the
following:
❏ Look at the shapes of the icons on the projector’s four
keystone buttons. Press the button whose icon is the
opposite of the shape of your screen image. Continue
pressing the button until you are satisfied with the
shape of the image.
10/04 Epson PowerLite 835p - 7
Page 8
Epson PowerLite 835p
Note: The image will be slightly smaller after adjusting. If it’s
important to maintain the correct aspect ratio, use the menu
system to perform keystone correction, then use the remote’s
Resize button to adjust the aspect ratio.
Keystone
buttons
❏ Press the
Setting menu, and press Enter. From the Setting menu,
select
press
Select
Keystone
Enter. Use the pointer button on the remote control to
adjust the keystone setting as needed.
Using Quick Corner
If your projected image has no parallel sides, you can even up
the sides using Quick Corner. Follow these steps:
1. Press the
projector’s control panel).
2. Select the
Note: If you are already using Keystone settings, you see a
warning message. To disable keystone settings and use Quick
Corner instead, press
3. From the Setting menu, select
4. Select
You see this screen:
Menu button on the remote control, select the
Keystone and press Enter, select H/V Keystone and
Enter, then select Horiz./Vert./Height and press Enter.
V-Keystone (for vertical keystone distortion) or H-
(for horizontal keystone distortion) and press
Menu button on the remote control (or on the
Setting menu and press Enter.
Enter; to keep your settings, press Esc.
Keystone and press Enter.
Quick Corner and press Enter.
5. Press the
Enter button to select the corner you want to
adjust.
6. Use the pointer button on the remote control (or the
arrow buttons on the projector) to adjust the shape.
Note: If you are not satisfied with the corrections made, press
the
Esc button for one second to reset the screen to its original
shape.
7. Repeat steps 5 and 6 as needed to adjust any remaining
corners.
8. When you’re done, press the
Esc button on the remote
control or projector’s control panel to exit the menu
system.
If
Quick Corner remains selected in the Keystone menu, the
Quick Corner screen appears whenever you press the
projector’s keystone buttons. You can then follow steps 5
through 8 above to correct the shape of your image or press
Esc to exit Quick Corner.
Correcting Computer Images
If you’re connected to a computer and the image doesn’t look
right, press the
Auto button on the remote control.
Note: You must be projecting an image for this button to have any
effect. The
Auto button works only with computer images.
8 - Epson PowerLite 835p 10/04
Page 9
Epson PowerLite 835p
This automatically resets the projector’s tracking, sync,
resolution, and position settings.
Auto button
If vertical bands appear in the projected image and pressing
the
Auto button doesn’t correct the problem, hold down the
Shift button on the projector’s control panel while pressing
either the
Tracking + or the Tracking - button.
Shutting Down the Projector
When you’ve finished using the projector, follow the
recommended procedure to shut it down. This extends the life
of the lamp and protects the projector from possible
overheating.
Note: You can set the projector to automatically turn off the
projector lamp and enter “sleep mode” when it has not received
any signals for 30 minutes. This conserves electricity, cools the
projector, and extends the life of the lamp. To start projecting
again, press the P
projector, unplug the power cord. To turn off sleep (standby)
mode, see the User’s Guide.
1. Turn off any equipment plugged into the projector.
2. To turn off the projector, press the red P
on the projector or remote control.
Power button. If you are done using the
Power button
Power button
If the image appears fuzzy or flickers and pressing the Auto
button doesn’t correct the problem, hold down the
button while pressing either the
Sync + or Sync - button on
Shift
the projector.
You see a confirmation message. (If you don’t want to turn
the projector off, press any other button.)
3. Press the P
twice, the lamp is turned off, and the
Power button again. The projector beeps
Power light flashes
orange for about 30 seconds as the projector cools down.
After the projector has cooled, the orange light stays on and
the exhaust fan shuts off.
To turn the projector on again, wait until the orange light
stops flashing. Then press the P
Power button.
4. If you extended the adjustable front foot, press up on the
blue foot release lever to retract it.
5. Replace the lens cap and unplug the power cord.
Caution: Turn the projector off when not in use. Continuous
24-hour-a-day use may reduce the projector’s overall life.
6. If you’re using a remote control, set its
OFF.
ON/OFF switch to
10/04 Epson PowerLite 835p - 9
Page 10
Epson PowerLite 835p
Using the Direct Power On Function
The Direct Power On function enables fast and easy setup and
shut down. This feature is convenient for ceiling-mounted
projectors because you can simply flip a switch connected to
the power outlet for the projector to turn it on or off. For
desktop or table-top use, you can quickly unplug the projector
immediately without having to wait for it to cool down. Then
you can pack up the projector and go.
Follow these steps to enable Direct Power On:
1. Press the
Extended menu.
2. Choose
3. Choose
4. Highlight
5. Press
Menu button on the remote control and select the
Operation and press Enter.
Direct Power ON and press Enter.
On and press Enter.
Esc or Menu to exit.
Using the Remote Control
The remote control lets you
access your projector’s
features from up to 30 feet
away, and from ± 25° above
or below and ± 45° left or
right of the projector’s
infrared receiver.
Note: If the projector does not respond to the remote control, make
sure batteries are installed and the switch on its side is turned on.
The projector also might not respond if the batteries are weak,
you’re standing at too great a distance from the projector, ambient
light is too bright, a certain type of fluorescent light is present, or
other equipment emitting infrared energy is present (such as a
radiant room heater).
Turn on
remote
control
Remote Comtrol Functions
Button Function
E-Zoom Zooms in on a portion of your image.
Page Advances to the next or previous image in a
Power Turns the projector on or off.
P in P Displays a picture-in-picture image.
Color
Mode
A/V Mute Turns off audio and video and displays the black, blue,
Resize Adjusts how an image fits into the display area.
Freeze Halts action. Press again to resume action.
Pointer Activates the pointer tool. To use a different style
Enter Selects a highlighted menu option or functions as the
Esc Displays the previous menu when using the menu
Menu Displays the on-screen menu system.
Help Displays the on-screen help system.
Source
buttons
Preview Previews connected sources (see page 5).
Preset Selects a preset selection of options for displaying
Auto Optimizes a computer image.
Wall Shot Adjusts the colors for projecting on a wall,
Focus Focuses the projected image.
Zoom Zooms the projected image.
Quick
Setup
Volume Increases or decreases the sound.
Num Turns on the numeric keypad. (Press this key until it
ID Sets the remote control ID
slideshow.
Adjusts the vividness of the image color. You can
select from several settings and save a different
setting for each computer or video source.
or user logo background. Press it again to turn audio
and video back on.
Illuminates the buttons on the remote control.
Navigates menus or controls the mouse pointer when
the projector is connected to a computer with the
mouse cable.
pointer, continue pressing the Pointer button to select
the desired style.
left mouse button when the remote control is used in
place of your computer’s mouse.
system. Functions as the right mouse button when the
remote control is used in place of your computer’s
mouse.
Switch to the equipment connected to the
corresponding port, or to EasyMP if you are projecting
wirelessly or using a memory card. Press Search to
automatically find a source image from a connected
device.
computer images.
blackboard, or other surface.
Automatically adjusts the image. Adjustments are
pre-selected in the projector menus.
lights.)
10 - Epson PowerLite 835p 10/04
Page 11
Epson PowerLite 835p
Using the Control Panel
Control Panel Button Functions
Button Function
Power Turns the projector on or off.
Quick Setup Automatically adjusts the image. Adjustments are
Source
Search
Zoom Zooms the projected image.
Focus Focuses the projected image.
Help Displays the on-screen help.
Computer/
Component
Video/
S-Video
Menu Displays the on-screen menu system.
Esc Pressing Esc while viewing a menu displays the
Enter Use Enter button to select an option when the menu
Tracking
buttons
Sync
buttons
Shift Press and hold to use the
A/V Mute Turns off audio and video and displays the black,
Resize Adjusts how an image fits into the display area.
Keystone
buttons
Volume Increases or decreases the sound.
pre-selected in the projector menus.
Automatically finds a source image from a
connected device.
Switches the source signal between EasyMP and
equipment connected to the Computer/Component
ports.
Switches the source signal among equipment
connected to the Video or S-Video ports.
previous menu.
or help system is active.
Let you manually eliminate vertical banding that
may be present in some computer images. Use the
Tracking buttons as arrow keys to navigate the on-
screen menu and help systems.
Let you correct blurriness that may be present in
some computer images. Use the
arrow keys to navigate the on-screen menu and help
systems.
blue, or user logo background. Press it again to turn
audio and video back on.
Corrects an image that is keystone-shaped or wider
on one side. (When used while pressing the Shift
button, these function as
see descriptions above.)
Sync buttons as
Tracking and Sync buttons.
Sync and Tracking buttons;
Presenting Over a Wireless Network
Using EMP NS Connection, you can project images shown
on your computer screen directly to your audience without
connecting the projector to your computer. Before you begin,
make sure you’ve installed EMP NS Connection from the
CD-ROM that came with your projector. See the User’s Guide
for installation instructions.
Note: Your computer must be running Microsoft
2000, Me or 98, or Macintosh
®
OS X 10.2.4 or later.
Starting EasyMP
Before you can connect to the projector wirelessly, you have to
switch it to EasyMP mode.
1. Turn on the remote control and the projector. Press the
EasyMP button on the remote control to select EasyMP as
the source.
2. Locate the EPSON 802.11g card that came with your
projector. Insert it with the label facing upward.
Note: Only the EPSON 802.11g card is guaranteed to work.
Other cards may not be compatible.
Once the card is inserted, you see one of these screens,
depending on the currently selected mode:
Note: If you see a message asking you to insert a LAN or
memory card, check to make sure your 802.11g card is
properly inserted.
®
Windows XP,
10/04 Epson PowerLite 835p - 11
Page 12
Epson PowerLite 835p
Ad Hoc mode
You can use NS Connection to connect to the projector and
send images wirelessly in two modes: Ad Hoc mode or Access
Point mode.
❏ Ad Hoc mode (computer-to-computer mode) lets you
connect just one computer to the projector at a time; it’s
easy to set up, and the only equipment you need is a
computer with a wireless (802.11g or 802.11b) network
card or adapter, or a Macintosh with an AirPort
®
or
AirPort Extreme card.
❏ Access Point mode (infrastructure mode) lets multiple
computers access the projector at the same time and easily
trade off control over the projector. To use Access Point
mode, you need a wireless (802.11g or 802.11b) access
point or an AirPort Extreme (or AirPort) base station, and
one or more computers with wireless network cards or
adapters.
Follow the instructions below for the mode you want to use.
Using Ad Hoc Mode
To use Ad Hoc (computer-to-computer) mode, adjust your
projector and wireless card or adapter settings as described in
this section.
Access Point mode
3. If you’ve already set up your computer and projector for the
mode you want to use—Ad Hoc mode (also called
computer-to-computer mode) or Access Point mode (also
called infrastructure mode)—skip to “Projecting
Wirelessly” on page 13.
Otherwise, continue with the next section.
Configuring the Connection
Note: Make sure you’ve installed the NS Connection software.
To connect to the projector over a wireless network, your computer
must be running Windows 98, Me, 2000, or XP. Your
Macintosh must be running OS X 10.2.4 or later. See page 183
for complete system requirements for projecting wirelessly.
Access Point mode (infrastructure mode) is required to achieve
transfer speeds up to 54MB/sec on an 802.11g network. Ad Hoc
mode (computer-to-computer mode) limits network connections to
11MB/sec. This is a standard specification of 802.11g
networking.
Configuring the Projector
Switch the projector to EasyMP mode and insert the Epson
802.11g card. You see this screen:
Config
button
4. To select Config, press the Enter button on the remote
control. You see the following screen:
Easy connect mode
12 - Epson PowerLite 835p 10/04
Page 13
Epson PowerLite 835p
Make sure
Easy connect mode is selected, as shown above.
If not, use the pointer button on the remote control to
highlight the checkbox next to
press
Enter to select it.
Easy connect mode, then
5. Make sure the projector has a unique name, so you can
identify it when connecting to it from your computer.
If you need to rename it, highlight the
box then press
Enter. The outline of the text box turns
Projector name text
yellow to indicate you are in input mode. Press the
pointer button up to select individual letters in
alphabetical order, or down to select letters in reverse order;
then press the pointer button to the right to move to
the next character position. When you’re done typing the
new name, press
Enter.
Note: If you want to enter a blank space, use the space
character that comes before the capital letter A.
If you want to enter numbers, press the
Num button on the
remote control. The button lights up to indicate that the
numeric keypad mode is active. Press the
Num button again
to exit numeric keypad mode.
number or “keyword” on the screen. When prompted by
NS Connection, you must enter the keyword on your
computer to connect.
Note: The projector keyword changes each time you turn the
projector off and then on again, or remove and reinsert the
802.11g card. Check the keyword on the EasyMP Network
screen whenever you start EasyMP and enter that keyword on
your computer. You can’t connect using a previous keyword.
It is recommended that the keyword setting is changed
periodically.
9. When you’re done making these settings, highlight the
button at the top of the screen (you can either press the
button on the remote control or use the pointer button
to highlight it), then press
again and press
Enter to return to the main EasyMP
Enter. Highlight the OK button
Network Screen.
Projecting Wirelessly
Once you’ve started EasyMP and set up your projector and
computer in either Ad Hoc mode or Access Point mode,
follow these steps to start NS Connection and project
wirelessly.
1. Make sure you’ve installed your 802.11g wireless card in
your projector.
2. Windows: Select
EMP NS Connection from the Start
menu.
Macintosh OS X: Double-click the
EMP NS Connection
icon in your Applications folder.
3. The first time you start NS Connection, you may see a
dialog box asking you to select your network. Select the IP
address for your computer’s network card and click
OK.
OK
Esc
6. If your network card supports an SSID or ESSID name,
highlight the
name. When you’re done, press
ESSID text box, press Enter, and enter a
Enter. Note that the
ESSID is case-sensitive (if you enter the name in uppercase
on the projector, you must type it the same way on the
computer connecting to the projector).
7. If you want to create a password for remote access to the
projector, highlight the
checkbox, press
alphanumeric characters. When you’re done, press
Password for WEB control
Enter, and enter a password of up to 8
Enter.
8. If you want to set up a security keyword so that only people
who are in the same room as the projector can access it,
turn
Projector keyword on. Then when you want to
connect to the projector, it displays a randomized four-digit
Note: If you don’t see your network adapter’s IP address,
allow a minute for it to appear. If your access point or
AirPort base station uses DHCP (Distribute IP addresses
setting is enabled for AirPort), sometimes it takes a minute
for the server to pick up the IP address.
Once you’ve selected the IP address for your network adapter,
you won’t see the Switch network dialog box when you start
10/04 Epson PowerLite 835p - 13
Page 14
Epson PowerLite 835p
NS Connection. If you want to change to a different network
adapter, click
box, then click
Extension on the EMP NS Connection dialog
Switch LAN on the extension dialog box.
You see the screen below. (If you have previously started
NS Connection, this is the first screen you see.)
Select projector
If the connection is working properly, you see your
projector listed. If you have additional Epson projectors on
the network, they are also listed, along with their status.
The color of the icon next to each projector’s name
indicates its status:
❏ Gray: the projector is not connected
❏ Orange: the projector is connected to another
computer
❏ Green: the projector is connected to your computer
If you don’t see your projector, check the following:
❏ Make sure your wireless signal is strong enough to establish
a connection:
If you have a Macintosh, check the
AirPort icon on the
Macintosh menu bar.
For Windows, see the documentation for your access
point or computer network card.
❏ Make sure the ESSID for your projector matches the SSID
for your wireless card, adapter, or access point. If you have
an AirPort base station, make sure the projector’s ESSID
matches the AirPort network name. Remember that the
ESSID is case-sensitive.
Note: The AirPort network name may be different than the
AirPort base station name. To check the network name, start
the AirPort Admin utility, select your base station, and click
Configure. Then click Show All Settings. The network name
appears on the AirPort tab.
❏ Check the IP address for both your projector and your
wireless card, adapter, access point, or AirPort base station.
The first three segments of the IP address should be
identical. The last segment of the projector’s IP address
should be close, but not identical, to the last segment of the
IP address for your wireless interface, access point, or base
station.
❏ Restart your computer and start NS Connection again.
4. Once the name of your projector appears, select it and click
Connect. If more than one projector is listed, you can select
additional ones and connect to them at the same time. If
the selected projector is already being used by another
person, you can still connect to it; doing so automatically
disconnects the other user.
Note: If you want your presentation encrypted, click
Extension and select Use encrypted communication. This step
enhances security but decreases the data transmission speed.
5. If you set up the projector to prompt you for a keyword
before connecting, you see a screen like this one:
Enter
keyword
❏ Make sure you’re trying to connect to the right network. In
Windows, verify that you’ve enabled your computer’s
connection to the access point or that your wireless card or
adapter is enabled, and that its SSID matches the
projector’s ESSID. In Macintosh, check the AirPort status
menu (click the AirPort icon on your menu bar) to make
sure AirPort is turned on and the projector’s ESSID or your
AirPort network is selected.
❏ Make sure you aren’t projecting one of the EasyMP
configuration screens. (You should see a message that the
projector is ready to connect.) If you have to exit a
configuration screen, restart NS Connection.
14 - Epson PowerLite 835p 10/04
Type in the four-digit number displayed on the EasyMP
Network screen and click
OK.
6. Once the connection is established, you see your
computer’s image transmitted to the screen, and a floating
control bar on your computer desktop:
7. If necessary, you can drag the control bar out of the way on
your screen.
Page 15
Epson PowerLite 835p
8. When you’re done with your presentation, click
Disconnect on the control bar.
Using the Control Bar
From the control bar, you can access these NS Connection
features:
Provides help for NS Connection.
Lists projectors and specifies which ones are in
use.
Lets you access the projector’s menu system
from an HTML browser window.
Keeps the projected image on screen, even if the
image on your computer changes.
Turns off the image and sound.
Zooms in on a part of your image.
Changes the brightness, contrast, and color
mode.
❏
Contrast
Increase or decrease image contrast.
❏
Color Mode
Lets you select from five preset modes to adjust the color
and brightness for specific environments:
sRGB for
computer displays (the default when projecting from a
computer with analog video),
bright rooms,
rooms,
Presentation for presentations in dark
Theatre for optimizing movie images (the default
for video display), and
Dynamic for presentations in
Living Room for video games.
When you’re done, click the arrow in the upper right corner
to close the submenu.
Connecting in IP Connect Mode
You can establish a connection manually using IP Connect
Mode even if your projector and computer are on a different
subnet (Access Point mode only) or connecting over different
routers.
Note: Depending on your network, your projector and computer
may connect over different routers even if they are in the same
room. Try this method if you are unable to connect automatically.
1. Start NS Connection. You see this screen:
Switches between the
S-Video ports.
Switches between signals from the
Video and
Computer
ports.
Clicking one of the buttons on the control bar may cause a
submenu to appear above the control bar. For example,
clicking the button displays the following submenu:
Click to
close
If you’re using more than one projector, you can use the
Projector drop-down menu to select the projector on which
you want to make any of the following changes:
❏
Brightness
Increase or decrease brightness.
❏ Keystone
Click + to narrow the top edge of the screen, or - to narrow
the bottom edge (this option functions like the Sync
buttons on the projector’s control panel).
Click here
10/04 Epson PowerLite 835p - 15
Page 16
Epson PowerLite 835p
2. Click the
Select this box
3. Select
Use IP connect mode and click OK. You see this
screen:
Extension button. You see this screen:
Click here
4. Click
IP connection. You see this screen:
Enter the IP address
and click Search
5. Enter the projector’s IP address and click
The IP address appears in the Projector list and
a searching icon appears:
Search.
16 - Epson PowerLite 835p 10/04
This icon appears if the search fails
to find the projector
This icon indicates search
is in progress
Note: You can add up to 16 projectors to the list. If you add
more, NS Connection begins to delete projectors from the list,
starting with the first projector added.
If the search fails to find a projector with the specified IP
address, the searching icon turns into a question mark. If
this happens, run EasyMP on your projector to check the
projector’s IP address, then repeat this step.
Page 17
Epson PowerLite 835p
6. Click the projector you want to connect to and click the
Connect button. If more than one projector is listed, you
can select additional projectors and connect to them at the
same time.
7. If you are prompted for a keyword, enter the four-digit
number displayed on the EasyMP Network screen and click
OK.
The computer’s image is transmitted to the projector and
appears on the screen.
Switching Between Users
To connect to the projector while another person is already
using it (Access Point mode only), follow these steps.
1. Start NS Connection. You see this screen:
Select projector
Cleaning the Lens
Clean the lens whenever you notice dirt or dust on the surface.
Use a canister of compressed air to remove dust.
To remove dirt or smears on the lens, use lens-cleaning paper.
If necessary, moisten a soft cloth with lens cleaner and gently
wipe the lens surface.
Caution: Do not use glass cleaner to clean the lens.
Cleaning the Projector
Before you clean the case, first turn off the projector 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 mild detergent. Then wipe the case.
Caution: Do not use wax, alcohol, benzene, paint thinner, or
other chemical detergents. These can damage the case.
2. Select the projector you want to use and click
You see this message:
3. Click
Yes to connect.
The other user is automatically disconnected and notified
about the interruption:
Connect.
Cleaning the Air Filters and Vents
Clean the air filters and air intake vents after every 100 hours
of use. If they are not cleaned periodically, they can become
clogged with dust, preventing proper ventilation. This can
cause overheating and damage the projector.
Note: To order replacement air filters, request part number
V13H134A07.
Follow these steps:
1. Turn off the projector. Wait for the
flashing, then unplug the power cord.
2. To clean the intake vents, use a small vacuum cleaner
designed for computers and other office equipment. If you
don’t have one, gently clean the vents with a soft brush
(such as an artist’s paintbrush).
Power light to stop
10/04 Epson PowerLite 835p - 17
Page 18
Epson PowerLite 835p
If the dirt is difficult to remove or a filter is broken, replace
the filters as described in the next section. Contact your
dealer, by calling Epson at (800) 873-7766, or by visiting the
Epson Store at www.epsonstore.com (U.S. sales only). In
SM
Canada, please call (800) 463-7766 for dealer referral.
Replacing the Lamp and Air Filters
3. Let the projector cool for at least an hour (if it has been on).
The lamp is extremely hot immediately after use.
4. Turn the projector over and remove the air filters at the side
and bottom of the projector.
5. Insert the two new air filters. They should click into place.
6. Turn the projector back over.
7. Loosen the screw holding the lamp cover in place (you
don’t need to remove it). Then remove the lamp cover.
The life span of the projection lamp is about 2000 hours if
Brightness Control in the Setting menu is set to High (default),
and 3000 hours if
Brightness Control is set to Low.
Note: When you get a replacement lamp for your projector, you
should replace the filters.
It is time to replace the lamp when:
❏ The projected image gets darker or starts to deteriorate.
❏ The message
Replace the lamp appears on the screen when
the lamp comes on and the lamp warning light flashes
orange. To maintain projector brightness and image
quality, replace the lamp as soon as possible.
❏ The lamp warning light flashes red (the lamp is burnt
out).
Contact your dealer or call Epson at (800) 873-7766 in the
United States for a replacement lamp. Request part number
V13H010L31. In Canada, please call (800) 463-7766 for
dealer referral.
Follow these steps to replace the lamp and air filters:
1. Turn off the projector.
2. When the
Power light stops flashing, unplug the power
cord.
WARNING: Let the lamp cool fully before replacing it. It is
extremely hot immediately after use.
8. Loosen the two screws holding the lamp in place (you don’t
need to remove them).
Loosen, but
don’t remove
these screws
9. Grasp the handles as shown and pull the lamp straight out.
In the unlikely event that the lamp has broken, small glass
fragments may be present and should be removed carefully to
avoid injury.
18 - Epson PowerLite 835p 10/04
Page 19
Epson PowerLite 835p
10. Gently insert the new lamp. (If it doesn’t fit easily, make
sure it is facing the right way.)
11. Once the lamp is fully inserted, tighten its screws and
replace the cover, then tighten the cover screw. (The
projector won’t turn on if the lamp cover is loose.)
12. Reset the lamp timer as described below.
Resetting the Lamp Timer
After you replace the lamp, you need to reset the lamp timer
using the projector’s menus.
1. Press the
Menu button on the remote control or on the
projector’s control panel. You see the main menu.
2. Use the pointer button on the remote control (or the
arrow buttons on the projector) to highlight
press
Enter.
Reset, then
You see this screen:
❏ When transporting the projector a long distance, first place
it in a hard-shell shipping case, then pack it in a firm box
with cushioning around the case. (An optional case is
available from Epson.)
Note: Epson shall not be liable for any damages incurred
during transportation.
3. Select
Lamp Hours Reset and press Enter. You see this
prompt:
4. Select
5. When you’re finished, press
Yes and press Enter.
Esc or Menu to exit.
Transporting the Projector
The projector contains many glass and precision parts. Follow
these guidelines to prevent damage:
❏ When shipping the projector for repairs, use the original
packaging material if possible. If you do not have the
original packaging, use equivalent materials, placing plenty
of cushioning around the projector.
10/04 Epson PowerLite 835p - 19
Page 20
Epson PowerLite 835p
Optional Accessories
To enhance your use of the projector, Epson provides
the following optional accessories:
Product Part number
Replacement lamp V13H010L31
Air filter replacement set V13H134A07
ATA molded hardshell case
Samsonite® wheeled soft case
Ceiling mount
Suspension adapter
False ceiling plate
Security bracket/cabling for gyro lock mounts
Adjustable ceiling channel
Kensington® security lock ELPSL01
Projection screens:
50-inch portable screen
60-inch portable pop-up screen
80-inch portable pop-up screen
83.6-inch hanging pull-down screen
Macintosh adapter set ELPAP01
Component video cable
S-Video cable
Distribution amplifier ELPDA01
Image Presentation Camera
High resolution document camera
ELPKS35
ELPKS52
ELPMB36
ELPMBAPL
ELPMBFCP
ELPMBSEC
ELPMBACC
ELPSC06
ELPSC07
ELPSC08
ELPSC09
ELPKC19
ELPSV01
V12H162020
V12H064020
You can purchase these accessories from your dealer, by calling
Epson at (800) 873-7766, or by visiting the Epson Store at
SM
www.epsonstore.com (U.S. sales only). In Canada, please call
(800) 463-7766 for dealer referral.
Related Documentation
CPD-18220 Epson PowerLite 835p User’s Guide
CPD-18221 Epson PowerLite 835p Quick Setup
sheet
20 - Epson PowerLite 835p 10/04
Loading...