ViewSonic VS11856 user manual Troubleshooting, List of Compatible Signals

Troubleshooting

If you think something is wrong, check the followings before contacting customer service.

If This Happens	Check
No power	* Is the power cord or battery pack plugged in?
	* Is it connected to the projector?
Power is lost during use	* Is the ambient temperature high?
	* Is the air intake or air exhaust blocked?
	* Is the projector turned on?
No picture	* Are the connections set up correctly?
	* Are all the connected devices functioning properly?
	* Is the input signal supported by the projector? ,
Picture not displayed correctly	* 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
Picture blurred Part of picture out of	supported range?
focus	* Is the projector’s screen placement angle tilted too
	far?
	* Are the sharpness or sampling phase adjustments
	off?
Colors too light	* Are the color or tint, adjustments off?
Bad shading	* Is the screen dirty?

48

List of Compatible Signals

Analog PC timing

Mode	Resolution	V-Sync	H Sync
VGA	640 x 480	50 Hz	24.69 kHz
DOS/Text mode	640 x 480	60 Hz	31.5 kHz
visible	640 x 480	72 Hz	37.9 kHz
	640 x 480	75 Hz	37.5 kHz
	640 x 480	85 Hz	43.3 kHz
SVGA	800 x 600	50 Hz	30.99 kHz
	800 x 600	56 Hz	35.2 kHz
	800 x 600	60 Hz	37.9 kHz
	800 x 600	72 Hz	48.1 kHz
	800 x 600	75 Hz	46.9 kHz
	800 x 600	85 Hz	53.7 kHz
XGA	1024 x 768	50 Hz	39.63 kHz
	1024 x 768	60 Hz	48.4 kHz
	1024 x 768	70 Hz	56.5 kHz
	1024 x 768	75 Hz	60.0 kHz
	1024 x 768	85 Hz	68.7 kHz
WXGA	1280x768	60 Hz	47.8 kHz
SXGA	1280 x 1024	64.0 kHz	60 Hz
	1280 x 1024	80.0 kHz	75 Hz
Coordinated Video	640 x 480	67 Hz	35 kHz
Timing	832 x 624	75 Hz	49.72 kHz
	1024 x 768	75 Hz	60.24 kHz