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42
If This Happens Check
TDP-T91
The images from the
document camera
are blurry
TDP-T91
The images from the
document camera
are flickering
If you think something is wrong, check the followings before contacting customer service.
Please see “Trouble indications”
p.41
as well.
If This Happens Check
No power
Power goes out
during use
No picture
No audio
Picture not
displayed
correctly
Picture blurred
Part of picture
out of focus
Image is dark
Colors too light
Bad shading
Remote control
doesn’t work
Before calling service personnel
• Is the power cord plugged in? Is it connected to the projector?
• Is the lamp cover loose?
p.39
• Is the ambient temperature high?
p.41
• Is the air intake or air exhaust blocked?
p.41
• Is the projector turned on?
p.24
• Is the mute function on?
p.28
• Is the brightness setting minimized?
p.30
• Are the connections set up correctly?
p.21
• Are all the connected devices functioning properly?
• Is the projector turned on?
p.24
• Is the mute function on?
p.28
• Is the volume setting minimized?
p.25
• Are the connections set up correctly?
p.21
• Are all the connected devices functioning properly?
• Is the input signal supported by the projector?
p.45
,
p.46
• Is there something generating an abnormal video signal, for
instance the video tape?
• Is the lens dirty?
p.40
• Is the lens focus adjusted optimally?
p.25
• Is the projection distance within the projector’s supported range?
p.20
• Is the projector’s screen placement angle tilted too far?
p.20
• Are the sharpness or sampling phase adjustments off?
p.27
p.30
• Are the brightness or contrast adjustments off?
p.30
• Is the lamp nearing the end of its service life?
p.33
• Are the color, tint, R-level, G-level, or B-level adjustments off?
p.30
• Is the screen dirty?
• Is the lamp nearing the end of its service life?
p.33
• Are the remote control’s batteries drained?
• Are the batteries inserted into the remote control correctly?
p.19
• Is the remote control being used within the effective range?
p.19
• Are there any obstructions between the remote control and
projector?
• Are there any fluorescent or other bright lights shining at the
projector’s infrared remote sensor?
• Is the document imaging camera’s lens dirty?
• Is the document imaging camera out of focus?
p.36
• Is the location of the object being focused too dark?
• Is there impact from the room’s fluorescent lighting?
Turn off the fluorescent lights, or change the shutter speed settings.
p.30