Epson Powerlite 71c Multimedia Projector Users Guide

							56Solving Problems
Image or Sound Problems
No image appears or the No Signal message is displayed.

Check that the Power light is green and not flashing and the 
lens cover is off. If the 
Power light is orange, the projector is 
in sleep mode; press the 
Power button to wake it up.

Your computer’s screen saver may be on. Press a key on the 
computer keyboard.

The A/VMute feature may be turned on. Press the A/VMute 
button on the remote control to turn it off, if necessary.

Make sure the cables are connected correctly, as described in 
Chapter 1.

Make sure the correct image source is selected. Press the Source 
button on top of the projector if necessary. 

Try restarting your computer. You may need to set the display to 
appear on both the LCD screen and the projector, or to switch 
between them. See the instructions beginning on page 26, or 
check your laptop documentation for instructions.
The Not Supported message is displayed.
The current video signal is not compatible with your projector. See 
page 66 for a list of compatible signals.
The image isn’t square, but a trapezoid (keystone) shape.
This is caused by the projector not facing the screen squarely or by 
extending the projector’s legs to position the image. Position the 
projector to face the screen squarely or press and hold the + or – side 
of the 
Keystone button on top of the projector until the image is 
squared-up.  
						

							Solving Problems57
Only part of the computer image is displayed.

If the computer’s output resolution setting is higher than 
800
×600 (EPSON PowerLite 51c) or 1024×768 (EPSON 
PowerLite 71c), the image is resized. If the computer output is 
not compatible with this resizing, choose a different display 
setting as follows:
Windows: In Windows 95/98/Me/2000/XP, right-click on the 
desktop, select 
Properties, click the Settings tab, and select the 
resolution you want. In Windows 3.x, use Windows Setup in the 
Main program group. See Windows help for more information.
PowerBook or Macintosh: For OS 9.x or earlier, choose 
Control Panels under the Apple menu and then choose 
Monitors. In the Monitors screen, choose Options and select 
Macintosh Hi-Res Display or another 800×600 (for the 
EPSON PowerLite 51c) or 1024
×768 (for the EPSON 
PowerLite 71c) setting. For OS X, select 
System Preferences 
from the Apple menu, and then click 
Displays. In the VGA 
Display screen, choose an 800
×600 (for the EPSON PowerLite 
51c) or 1024
×768 (for the EPSON PowerLite 71c) setting. For 
more information, see your PowerBook documentation. For 
supported display settings, see page 66.

You may need to modify existing presentation files if you created 
them for a different resolution. See your software manual for 
specific information.
The image or parts of it are blurred or out of focus.

Adjust the Brightness, Contrast, Sharpness, and/or Gamma 
settings on the Video menu. If you’re viewing a computer image, 
also try adjusting the Tracking and Sync settings. See page 41 for 
instructions on using the menu.
When you change video settings, you should be able to see the 
effect on the screen immediately. Feel free to experiment. You can 
always select Reset to return to the factory default settings.  
						

							58Solving Problems

There may be dirt or smears on the lens. Clean the lens by gently 
wiping it with an alcohol-based cleaner on a soft cloth. See 
page 48 for more information.

Your video signal mode may not be detected automatically. Select 
Manual and then choose the correct signal for the Mode setting 
on the projector’s Video menu; see page 41 for instructions.
The image vibrates, flickers, or has vertical lines.

Adjust the Tracking and Sync settings on the Video menu (or 
through the projector’s Help system). It is best to project a full 
screen containing black text on a white background (such as a 
letter) when you adjust these settings. Hold down the button to 
change the setting until your image looks correct. See page 41 for 
instructions on using the Video menu.

It may not be possible to detect your video signal mode 
automatically. Select 
Manual and then choose the correct signal 
for the Mode setting on the projector’s Video menu; see page 41 
for instructions.
The image quality is poor on a laptop computer.
The video signal may be split between the computer and the projector. 
Try turning off the laptop LCD display. See your laptop manual or 
on-screen help for instructions.
The colors of the image are not right.

If you’re displaying video, adjust the Brightness, Contrast, Color, 
Tint, and/or Gamma settings on the Video menu. See page 41 for 
instructions.

If you’re displaying computer images, adjust the Brightness, 
Contrast, and/or Gamma settings on the Video menu. See 
page 41 for instructions. Also adjust the color temperature and 
RGB settings using the Color Setting option on the Advanced 
menu, as described on page 44. If necessary, you can also adjust 
your computer display settings to correct the color balance. 
						

							Solving Problems59

Check the current lamp life and replace the lamp, if necessary. See 
page 45 for instructions on checking the lamp usage using the 
projector’s About menu and page 50 for instructions on replacing 
the lamp.
There is no sound.

Press the right side of the Volume button on the remote control 
to turn up the sound.

Press the A/VMute button on the remote control to make sure 
this feature is not enabled.

Make sure the right source is selected. Press the Source button on 
top of the projector to select the right source.

Make sure the volume on your computer or video source is not 
turned all the way down or muted. See your Windows or 
Macintosh online help for instructions. Also, make sure the cables 
are connected correctly, as described in Chapter 1.

Make sure the correct Audio Input signal is selected on the 
projector’s Audio menu; see page 43 for instructions.
Problems with the Remote Control
The projector doesn’t respond to remote control commands.

Make sure the remote control is turned on. 

The remote control batteries may be low on power or inserted 
incorrectly. Check or replace them following the instructions on 
page 32.

Dim the room lights, turn off any fluorescent lights, and move the 
projector away from direct sunlight. Strong lighting, especially 
fluorescent lights, may affect the projector’s infrared receiver.

Turn off any nearby equipment that emits infrared energy, such 
as a radiant room heater.
R/C switch 
						

							60Solving Problems

Make sure you are within 32 feet of the projector and within a 30° 
horizontal or 15° vertical angle of the infrared receiver on the 
front of the projector.

If you’re having trouble using the remote control as a wireless 
mouse, make sure the mouse cable is securely connected to both 
ends. See Chapter 1 for details.
Where To Get Help
EPSON provides technical assistance through electronic support 
services, as listed in the following table:
To use the EPSON PrivateLine Support service, call (800) 637-7661 
and enter the PIN on the EPSON PrivateLine Support card included 
in your Owner’s Kit. This is the fastest way to speak to a live 
representative, and it’s free. This service is available 6
AM to 6PM, 
Pacific Time, Monday through Friday, for the duration of your 
warranty period. 
You may also speak to a projector support specialist by dialing one of 
these numbers (toll or long distance charges may apply):

U.S.: (562) 276-4394, 6AM to 6PM, Pacific Time, Monday 
through Friday

Canada: (905) 709-3839, 6AM to 6PM, Pacific Time, Monday 
through Friday
ServiceAccess
World Wide Web 
Technical SupportFrom the Internet, you can reach EPSON’s product support page at 
http://support.epson.com. After selecting your product, you can view 
frequently asked questions and answers, download product documentation, 
and receive technical advice through e-mail.
Presenters Online  Access tips, templates, and training for developing successful presentations 
at http://www.presentersonline.com
note
You can purchase screens, 
carrying cases, or other 
accessories from EPSON by 
calling (800) 873-7766, or 
visit the EPSON Store at 
www.epsonstore.com (U.S. 
sales only). In Canada, please 
call (800) 463-7766 for 
dealer referral.  
						

							Solving Problems61
Before you call, please have the following information ready:

Product name (EPSON PowerLite 51c or 71c)

Product serial number (located on the bottom of the projector)

Video source (computer, DVD player, etc.) and how it’s 
connected

Description of the problem 
						

							62Solving Problems 
						

							6
Technical Specifications63
Technical Specifications
General
Type of display Poly-silicon Thin Film Transistor (TFT)
Size of liquid
crystal panels Diagonal: 0.7 inch (17.8 mm)
Lens F=1.5, f=26.3 mm
Focus adjustment Manual
Zoom ratio Digital 0.8 to 1.0, lens at maximum size, 
100% to 83% (smallest)
Resolution 51c: 800 × 600 pixels
71c: 1024 × 768 pixels 
Color reproduction 24 bit, 16.7 million colors
Brightness (ANSI) 51c: 1200 lumens 
71c: 1000 lumens
Image size (diagonal) 2.3 to 25 ft (0.7 to 7.6 m)
Projection distance 3.3 to 36 ft (1 to 11 m) in Wide mode
3.9 to 43.2 ft (1.2 to 13.1 m) in Tele mode
Projection methods Front, rear, upside-down (ceiling mount)
Internal speaker system 1W monaural
Optical aspect ratio 4:3 (horizontal:vertical), adjustable to 16:9 
for HDTV, NTSC, PAL, and SECAM 
images
Keystone correction 
angle
±15°
Supported video 
interface standards NTSC, NTSC4.43, PAL, PAL-M, PAL-N, 
PAL60, SECAM, HDTV
EPSON Control Code ESC/VP Level 5 
						

							64Technical Specifications
Projection Lamp
Ty p e U H E  ( U l t r a  H i g h  E f f i c i e n c y )
Power consumption 160 W
Lamp life About 1500 hours 
Part number V13H010L16
Remote Control
Range 32.8 feet (10 meters)
Batteries Alkaline AA (2)
Mouse Compatibility
Supports PS/2, USB, and ADB
Dimensions
Height 3.14 inches (80 mm)
Width 11.8 inches (300 mm)
Depth 8.66 inches (220 mm)
Weight 6.8 lb (3.1 kg)
Electrical
Rated frequency 50/60 Hz
Power supply 100 to 120 VAC, 2.4 A
200 to 240 VAC, 1.2 A
Power consumption Operating: 240 W
Sleep mode: 8.6 W
Environmental
Te m p e r a t u r e
(non-condensing) Operating: 41 to 95 °F (5 to 35 °C), 
Storage: 14 to 140 °F (–10 to 60 °C)
Humidity
(non-condensing) Operating: 20 to 80% RH
Storage: 10 to 90% RH 
						

							Technical Specifications65
Safety
United States FCC Part 15J Class B
UL1950 Rev. 3
Canada DOC SOR/88-475
CSA C22.2 No. 950 Rev. 3
CE Marking Directive 89/336/EEC
EN 55022 Class B
EN 50082-1
Directive 73/23/EEC
EN 60950
Computer Connector Pin Assignments
The Computer port is a female video RGB, 15-pin micro-D-style 
connector. 
Input pin Computer connector signals
1 Red video
2 Green video
3 Blue video
4 GND
5 GND
6 Red video GND
7 Green video GND
8 Blue video GND
9 Reserve
10 Synchronous GND
11 GND
12 SDA
13 Horizontal sync/composite sync
14 Vertical sync
15 SCL