InFocus Projector Lp755 User Manual

40
Maintenance & Troubleshooting
F
IGURE 30
Removing the lamp module
WARNING: Do not drop the
lamp module or touch the glass
bulb! The glass may shatter and
cause injury.
7Align the new lamp module in the correct direction.
8Gently push the module in as far as it goes.
9Tighten the screws on the outside of the module.
10Reposition the lamp door.
11Tighten the lamp door screw.
12Plug in the power cord and turn the projector back on. The 
lamp monitor light and lamp hour counter in the Status menu 
are...

41
Replacing the Batteries in the Remote Control
The life of the batteries depends on how often and how long you 
use the remote. Symptoms of low battery charge include erratic 
responses when using the remote and a reduced range of opera-
tion.
Follow these steps to replace the batteries:
1Turn the remote face down in your hand.
2Slide the battery cover off the end of the remote by pressing 
on it with the heel of your hand.
3Remove the old batteries.
4Install two new AA alkaline batteries. Make sure...

42
Maintenance & Troubleshooting
Troubleshooting
If you’re experiencing trouble with the projector, follow these 
steps to make sure everything is properly connected before you 
call Technical Support for assistance.
1Check cable connections. Verify that all computer, CableWiz-
ard and power cables are properly connected.
2Verify that all power is switched on.
3Verify that the projector is not in standby (the Standby LED on 
the keypad is lit when the projector is in standby).
4If the projector still...

43
Solutions to Common Problems
Problem: Nothing on projection screen
•
Make sure that the power cord is properly connected to a func-
tional AC electrical outlet. Make sure that the power cord is 
also properly connected to the projector and the green Power 
LED is lit.
•If the projector is plugged into a power strip, make sure the 
power strip is turned on.
•Make sure you have removed the lens cap from the projection 
lens at the front of the projector.
•Make sure the projector is turned on.
•Check the...

44
Maintenance & Troubleshooting
Problem: Only the start-up screen displays
•
Verify that the cables are connected correctly. Check to see that 
the CableWizard computer cable is correctly connected to the 
monitor connector on the computer (this is the connector 
where your monitor cable usually goes.) See page 6 for connec-
tion procedures.
•Verify that the proper input source is connected. See “Com-
puter” on page 22 or “Video” on page 23.
•You might need to turn everything off and power up the...

45
Problem: Image is too wide or narrow for screen
•
You might need to manually adjust the tracking to reduce or 
enlarge the projected image. Refer to “Manual Tracking” on 
page 30.
•Adjust the resolution of your monitor if it’s greater than 
1280x1024. Only this resolution at 75 Hz or less will display on 
the projector.
Problem: Image is out of focus
•
Turn the projection lens to focus the image.
•Make sure the projection screen is at least 4 feet (1.2m) from the 
projector.
•Make sure the projector...

46
Maintenance & Troubleshooting
Problem: Image is “noisy” or streaked
Try these steps in this order.
1Deactivate the screen saver on your computer.
2Tu r n  
Auto Image off and then back on again. See “Auto 
Image” on page 29. 
3Adjust the synchronization and tracking manually to find an 
optimal setting. See “Manual Sync” on page 29 and “Manual 
Tracking” on page 30.
•If you’re using an extension cable between the CableWizard 
and the projector, make sure it’s InFocus-approved.
•The problem could be...

47
Before calling your dealer or InFocus Technical Support for assis-
tance, please have the following information available:
•the projector ’s serial number (located on the bottom label)
•the resolution of your computer.
Call InFocus Technical Support at 
1-800-799-9911. Support is free 
between 6 a.m. and 6 p.m. PST, Monday through Friday. Support 
is available in North America after hours and on weekends for a 
fee at 
1-888-592-6800.
Or, send us an e-mail at [email protected]
In Europe, call...

APPENDIX
3821-LP755 COV/DIV ENG  9/9/99  4:55 PM  Page 7 

49
APPENDIX
Specifications
The LP755 must be operated and stored within the temperature 
and humidity ranges specified. 
Te m p e r a t u r e
Operating
50 F to 104
° F (10 C to 40° C)
Non-operating
-4 F to 158
° F (-20 to 70° C)
Humidity
Operating and non-oper. 5% to 95% relative humidity, non-condensing
Dimensions
5.2 x 11.7 x 14.7 inches (13 x 29.5 x 36.7 cm)
We i g h t
 unpacked 9.7 pounds (4.4kg)
Altitude
Operating 0 to 10,000 feet (3048 meters)
Non-operating 0 to 40,000 feet (12,192 meters)
Optics...