Optoma Ep7155 Projector User Manual

							 
Appendices 
 41
Appendices 
Replacing the Projection Lamp 
The projection lamp should be repl aced when it burns out. It should onl y be replaced with a certified 
replacement part, which you can order from your local dealer.  
Important: 
1.  The lamp contains a certain  amount of mercury and should be dis posed of according to local or-
dinance regulations. 
2. Avoid touching the glass surf ace of the new lamp, doing so  may shorten its operation life. 
 
Warning: 
Be sure to turn off and unplug the projector at l east an hour before replacing the lamp. Failure to do 
so could result in a severe burn. 
 
1.  
Loosen the two cap-
tive screws on the 
lamp compartment 
cover (A). 
Remove the lamp 
compartment cover 
(B). 
 
 
 
 
 
  
						

							 
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2.  Remove the two 
screws from the lamp 
module (A). 
3.  Lift the module handle 
up ( B). 
 
 
  
						

							 
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4.  Pull firmly on the 
module handle to re-
move the lamp 
module. 
 
 
5.  Reverse steps 1 to 5 to replace the new lamp module. 
  
						

							 
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Resetting the Lamp 
After replacing the lamp, you should reset the lamp  hour counter to zero. Refer to the following: 
1.  
Press the  Menu button to open 
the Image menu. 
2.  Press  to navigate to the 
OPTIONS menu. 
3.  Press  to navigate to  Lamp 
Setting  and then press Enter . 
4.  Navigate down to Lamp Reset 
and then press 
 or Enter. 
 
 
5.  A Confirm Lamp Reset  message 
displays. Select  Yes to confirm 
the lamp reset. 
  
						

							 
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 45
Cleaning the Projector 
Cleaning the projector to remove dust and gr ime will help ensure trouble-free operation.  
Warning: 
1. Be sure to turn off and unplug the projector at  least an hour before cleaning. Failure to do so 
could result in a severe burn. 
2. Use only a dampened cloth when cleaning. Do not  allow water to enter the ventilation openings 
on the projector.  
3. If a little water gets into the projector interi or while cleaning, leave unplugged in a well-ventilated 
room for several hours before using. 
4. If a lot of water gets into the projector inte rior when cleaning, have the projector serviced. 
Cleaning the Lens 
You can purchase optic lens cleaner from most camera stores . Refer to the following to clean the pro-
jector lens. 
1.  Apply a little optic lens cleaner to a clean soft cloth. (Do not apply \
the cleaner directly to 
the lens.) 
2.  Lightly wipe the lens in a circular motion. 
Caution: 
1.  Do not use abrasive cleaners or solvents. 
2. To prevent discoloration or fading, av oid getting cleaner on the projector case. 
Cleaning the Case 
Refer to the following to clean the projector case. 
1.  Wipe off dust with a clean dampened cloth. 
2.  Moisten the cloth with warm water and mild detergent (such as used to w\
ash dishes), and 
then wipe the case. 
3.  Rinse all detergent from the cloth and wipe the projector again. 
Caution: 
To prevent discoloration or fading of the ca se, do not use abrasive alcohol-based cleaners. 
Using the Kensington® Lock 
If you are concerned about security, attach the proj ector to a permanent object with the Kensington 
slot and a security cable.  
 
 
  
						

							 
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 46
Common problems and solutions 
These guidelines provide tips to deal with problems you may encounter while using the projector. If 
the problem remains unsolved, cont act your dealer for assistance. 
Often after time spent troubleshooti ng, the problem is traced to something as simple as a loose con-
nection. Check the following before proceedi ng to the problem-specific solutions. 
• Use some other electrical device to confirm that the electrical outlet is working. 
•  Ensure the projector is turned on. 
•  Ensure all connections are securely att
 ached.  
•  Ensure the att
 ached device is turned on. 
•  Ensure a connected PC is not in suspended m
 ode. 
•  Ensure a connected notebook com
 puter is configured for an external display. (This is usu-
ally done by pressing an Fn-key combination on the notebook.) 
Tips for Troubleshooting 
In each problem-specific section, tr y the steps in the order suggested. This may help you to solve the 
problem more quickly. 
Try to pin point the problem and thus avoid replacing non-defective parts.  
For example, if you replace batte ries and the problem remains, put  the original batteries back and go 
to the next step.  
Keep a record of the steps you take when troubleshooting-the information\
 ma y be useful when calling 
for technical support or for passing on to service personnel. 
  
						

							 
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LED Error Messages 
ERROR CODE MESSAGE POWER LED/FLASHES LAMP LED/FLASHES 
Thermal break status error  4 0 
Fan1 error (Power Fan) 6 1 
Fan2 error (Lamp Fan) 6 2 
Fan3 error (Blower Fan) 6 3 
Lamp door sensor detect high 7 0 
DMD error 8 0 
Color wheel error 9 0 
  
						

							 
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Image Problems 
Problem: No image appears on the screen 
1.  Verify the settings on your notebook or desktop PC. 
2.  Turn off all equipment and power on again in the correct order. 
Problem: The image is blurred  
1. Adjust the  Focus on the projector. 
2.  Press the  Re-Sy
 nc button on the remote control or projector. 
3.  Ensure the projector-to-screen distance is with in the 10-meter (33-feet) specified range. 
4.  Check that the projector lens is clean. 
Problem: The image is wider at the top or bottom (trapezoid effect)  
1. Position the projector so it is as perpendicular to the screen as possib\
le.  
2.  Use the Keystone button on the remote contro
 l or projector to correct the problem. 
Problem: The image is reversed or upside down 
Check the Projection setting on the  SETUP menu of the OSD. 
Problem: The image is streaked  
1. Set the  Frequency  and Tracking settings on the  DISPLAY menu of the OSD to the de-
fault settings. 
2.  To ensu
 re the problem is not caused by a connected PC’s video card, connect to another 
computer.  
Problem: The image is flat with no contrast  
Adjust the  Contrast setting on the Main menu of the OSD. 
Problem: The color of the projected image does not match the source imag\
e. 
Adjust the  Color Temperature and Gamma  settings on the Main menu of the OSD. 
Lamp Problems 
Problem: There is no light from the projector  
1. Check that the power cable is securely connected. 
2.  Ensure the power source is good by te sting with another electrical device. 
3.  Restart the projector in the correct order
  and check that the Power LED is green. 
4.  If you have replaced the lamp recently , try resetting the lamp connections.  
5.  Replace the lamp module. 
6.  Put the old lamp back in the projec tor and have the projector serviced. 
Problem: The lamp goes off 
1. Power surges can cause the lamp to turn off.  Press the power button twice to turn off the 
projector. When the Ready LED is on, press the power button. 
2.  Replace the lamp module. 
3.  Put the old lamp back in the projec tor and have the projector serviced. 
 
 
  
						

							 
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Remote Control Problems 
Problem: The projector does not respond to the remote control  
1.  Direct the remote control towards remote sensor on the projector.  
2.  Ensure the path between remote  and sensor is not obstructed. 
3.  Turn off any fluorescent lights in the room. 
4.  Check the battery polarity. 
5.  Replace the batteries. 
6.  Turn off other Infrared-enabled  devices in the vicinity. 
7.  Have the remote control serviced. 
Audio Problems 
Problem: There is no sound 
1. Adjust the volume on the remote control.  
2.  Adjust the volume of the audio source. 
3.  Check the audio cable connection. 
4.  Test the source audio output with other speakers. 
5.  Have the projector serviced. 
Problem: The sound is distorted  
1. Check the audio cable connection. 
2.  Test the source audio output with other speakers. 
3.  Have the projector serviced.  
						

							 
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Having the Projector Serviced 
If you are unable to solve the problem, you should hav e the projector serviced. Pack the projector in 
the original carton. Include a description of the pr oblem and a checklist of the steps you took when 
trying to fix the problem--the information may be useful to service personnel.  
Optoma Global Offices 
For service or support, please  contact your local office. 
USA 
715 Sycamore Drive  
Milpitas, CA 95035, USA  
Tel: +1-408-383-3700  
Fax: +1-408-383-3702
 
www.optomausa.com  
Service: [email protected] 
Canada 
5630 Kennedy Road, 
Mississauga, ON, L4Z 2A9, Canada 
Tel: 905-361-2582  
Fax: 905-361-2581 
www.optoma.ca
Europe 
42 Caxton Way, The Watford Business Park 
Watford, Hertfordshire, WD18 8QZ, UK 
Tel: +44 (0) 1923 691 800  
Fax: +44 (0) 1923 691 888 
www.optoma.eu
Service Tel: +44 (0) 1923 691 865 
Service: [email protected] 
France 
Bâtiment E, 81-83 avenue Edouard Vaillant 
92100 Boulogne Billancourt, France 
Tel: +33 1 41 46 12 20 
Fax: +33 1 41 46 94 35 
 
Service:  [email protected]
Spain 
Paseo de la Castellana, 135 7 Planta 
Madrid, Spain 
Tel.: +34 91 790 67 01 
        +34 91 790 67 02 
Fax: + 34 91 790 68 69 
 
  Taiwan 
5F, No. 108, Minchiuan Rd.  
Shindian City, Taipei Taiwan 231 
Tel: +886-2-2218-2360  
Fax: +886-2-2218-2313 
www.optoma.com.tw
 
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Cheung Sha Wan, Kowloon, Hong Kong 
Tel: +852-2396-8968  
Fax: +852-2370-1222 
www.optoma.com.hk
China 
5F, No. 1205, Kaixuan Rd.,  
Changning District, Shanghai, 200052, China 
Tel: +86-21-62947376  
Fax: +86-21-62947375 
www.optoma.com.cn
Korea 
WOOMI TECH.CO.LTD. 
4F,Minu Bldg.33-14, Kangnam-Ku, 
Seoul, 135-815, KOREA 
Tel: +82+2+34430004 
Fax: +82+2+34430005 
Japan 
東京都足立区綾瀬3-25-18 
オーエス本社ビル 
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E-mail:  [email protected]
 
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