Boxlight Cp755ew User Manual

							
Multimedia LCD Projector
 
-50-
 
Symptom Possible causeRemedy
 
The power is 
not turned on
 
*The main power switch is not 
turned on. 
*The power cord is disconnected. *Turn on the main
 power switch. 
*Plug the power cord into an AC 
power outlet
 
No video 
*The input is not correctly 
connected. 
*No signal input 
*No open lens cover
 
*Select the appropriate input 
source 
*Connect correctly 
*Remove the lens cover
 
No audio 
*The projector is not correctly 
connected. 
*The volume is set to minimum. 
*Mute is turned on
 
*Check audio cable connect 
correctly. 
*Adjust the volume. 
*Press the MUTE button
 
No remote 
function
 
*No battery 
*Remote signal be obstructed
 
*Check battery of remote 
controller 
*Remove obstacle between 
projector and re mote controller
 
Colors are 
pale
 
*Color density and color 
matching are not correctly 
adjusted. 
*Color lose
 
*Adjust the RGB setting. 
*Check VGA cable.
 
Abnormal 
brightness & 
contrast
 
*Brightness and contrast are not 
correctly adjusted. 
*The lamp is nea ring the end of 
its service life
 
*Adjust the brightness and 
contrast setting. 
*Replace with a new lamp
 
Video is 
blurred
 
*Focus or RGB phase is out of 
adjustment.
 *Adjust the focus and phase. 
  
						

							
Multimedia LCD Projector
 
-51-
 
 
List of Supported Monitor Displays 
Computer mode 
Signal Refresh Rate(Hz) Resolution(dots) 
VGA 60 640X480 
VESA 60/72/75/85 640X480 
SVGA 56/60/72/75/85 800X600 
XGA 60/70/75/85 1024X768 
SXGA 70/75 1152X864 
SXGA 60/75 1280X960 
SXGA 60 1280X1024 
Component(YPbPr) 
Signal Refresh Rate(Hz) Resolution(dots) 
SDTV(480i) 30 720X480 
SDTV(480p) 60 720X480 
HDTV(720p) 60 1280X720 
HDTV(1080i) 30 1920x1080 
Composite/S-video 
Signal Refresh Rate(Hz) Resolution(dots) 
TV(NTSC) 60 720X480 
TV(PAL,SECAM) 50 720X576