Toshiba T721, T520, T620, T621, T521E, S221 owner manual Before calling service personnel

Before calling service personnel

If you think something is wrong, check the following before contacting customer service. Please see “Trouble indications” p.65 as well.

If This Happens		Check
No power	•	Is the power cord plugged in? Is it connected to the projector?
	•	Is the lamp cover loose? p.65
Power goes out	•	Is the ambient temperature high? p.65
during use	•	Is the air filter clogged? p.65
	•	Is the air intake or air exhaust blocked? p.65
No picture	•	Is the projector turned on? p.27
	•	Is the mute function on? p.30
	•	Is the brightness setting minimized? p.54
	•	Are the connections set up correctly? p.22
	•	Are all the connected devices functioning properly?
No audio	•	Is the projector turned on? p.27
	•	Is the mute function on? p.30
	•	Is the volume setting minimized? p.28
	•	Are the connections set up correctly? p.22
	•	Are all the connected devices functioning properly?
Picture not	•	Is the input signal supported by the projector? p.69 , p.70
displayed	•	Is the correct video mode selected? p.29
correctly	•	Is the correct signal format selected? p.29
	•	Is the selecting of RGB or Y/PB/PR input correct? p.27
	•	Is there something generating an abnormal video signal, for
		instance the video tape?
Picture blurred	•	Is the lens dirty? p.58
Part of picture	•	Is the lens focus adjusted optimally? p.28
out of focus	•	Is the projection distance within the projector’s supported range?
		p.21
	•	Is the projector’s screen placement angle tilted too far? p.21
	•	Are the sharpness or sampling phase adjustments off? p.29 p.54
Image is dark	•	Are the brightness or contrast adjustments off? p.54
	•	Is the lamp nearing the end of its service life? p.32
Colors too light	•	Are the color, tint, R-level, G-level, or B-level adjustments off? p.54
Bad shading	•	Is the screen dirty?
	•	Is the lamp nearing the end of its service life? p.32
Remote control	•	Are the remote control’s batteries drained?
doesn’t work	•	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?
	•	Is the correct operation mode set? p.20
	•	Are there any fluorescent or other bright lights shining at the
		projector’s infrared remote sensor?

If This Happens		Check
Mouse remote	•	Are the USB cable and mouse remote control receiver (Models
control doesn't		equipped with PC card slot) correctly connected? p.52
work	•	Do your computer and OS support USB?
	•	Is the remote control in [PC Mode]? p.20
	•	Are there any obstructions between the remote control and
		projector/mouse remote control receiver?
Memory PC card	•	Is the memory PC card inserted correctly?
images aren't	•	Is a PC card not supported by the projector inserted? p.41
projected	•	Is the CARD indicator red? p.23
	•	Are there any JPEG files saved on the memory PC card?
	•	Are the files too large or in an unsupported format for the
		projector?
		Convert them with the supplied software application. p.62
The wireless	•	Is the wireless LAN PC card inserted correctly?
LAN PC card	•	Is a wireless LAN PC card not supported by the projector inserted?
doesn't work		The operation of cards other than the supplied product is not
		guaranteed.
	•	Is the CARD indicator red? p.23
	•	Are the transmission mode and channel properly configured? p.34
	•	Are there any obstructions between the computer and projector?
	•	Do your computer and OS support the supplied software
		application? p.24
The images from the	•	Is the document imaging camera’s lens dirty?
document camera	•	Is the document imaging camera out of focus? p.46
are blurry	•	Is the location of the object being focused too dark?
The images from the	•	Is there impact from the room’s fluorescent lighting?
document camera		Turn off the fluorescent lights, or change the shutter speed
are flickering		settings. p.29

Others

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