ViewSonic PRO8100 PRO8100 User Guide, English - Page 52

Troubleshooting If you think something is wrong, check the followings before contacting customer service. If This Happens No power Power is lost during use No picture Picture not displayed correctly Picture blurred Part of picture out of focus Check * Is the power cord or battery pack plugged in? * Is it connected to the projector? * Is the ambient temperature high? * Is the air intake or air exhaust blocked? * Is the projector turned on? * Are the connections set up correctly? * Are all the connected devices functioning properly? * Is the input signal supported by the projector? , * Is something generating an abnormal video signal, for instance the video tape? * Is the lens dirty? * Is the lens focus adjusted optimally? * Is the projection distance within the projector's supported range? * Is the projector's screen placement angle tilted too far? * A re the sharpness or sampling phase adjustments off? Colors too light Bad shading * Are the color or tint, adjustments off? * Is the screen dirty? 48 List of Compatible Signals Analog PC timing Mode VGA DOS/Text mode visible SVGA XGA WXGA SXGA Coordinated Video Timing Resolution 640 x 480 640 x 480 640 x 480 640 x 480 640 x 480 800 x 600 800 x 600 800 x 600 800 x 600 800 x 600 800 x 600 1024 x 768 1024 x 768 1024 x 768 1024 x 768 1024 x 768 1280x768 1280 x 1024 1280 x 1024 640 x 480 832 x 624 1024 x 768 V-Sync 50 Hz 60 Hz 72 Hz 75 Hz 85 Hz 50 Hz 56 Hz 60 Hz 72 Hz 75 Hz 85 Hz 50 Hz 60 Hz 70 Hz 75 Hz 85 Hz 60 Hz 64.0 kHz 80.0 kHz 67 Hz 75 Hz 75 Hz H Sync 24.69 kHz 31.5 kHz 37.9 kHz 37.5 kHz 43.3 kHz 30.99 kHz 35.2 kHz 37.9 kHz 48.1 kHz 46.9 kHz 53.7 kHz 39.63 kHz 48.4 kHz 56.5 kHz 60.0 kHz 68.7 kHz 47.8 kHz 60 Hz 75 Hz 35 kHz 49.72 kHz 60.24 kHz