PLUS Vision U4-237 Troubleshooting, Check the following matters before requesting servicing

Troubleshooting

Check the following matters before requesting servicing.

Problem

Power does not turn on

Check

•Is the power cord plugged into a power outlet?

•Is the lamp cover properly mounted?

•Is the projector’s temperature high? To protect the projector, the power can- not be turned on when the projector’s temperature is abnormally high.

•Has the lamp reached the end of its service life?

•Depending on the timing with which the power cord is plugged in (the power is turned on), it may happen that the STANDBY indicator (LED) does not light and the power does not turn on. This is not a malfunction. If this hap- pens, unplug the power cord then plug it back in.

Reference Page

E-21

E-60

E-55

E-55

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No image is produced	• Is a connected input selected?	E-50
	• Is the cable properly connected to the input terminal?	E-15 –20
	• When a computer is connected, are signals being output from the computer?	E-17
	• Does the signal being input have a frequency usable with this projector?	E-62
	• Are the brightness and contrast adjusted to the minimum?	E-42
	• Is the STATUS indicator lit a steady red or blinking red?	E-55
	• When the component signal of the DVD player is connected with the DVI	E-50
	connector and the image is not output, is [Input Settings] of the DVI connec-
	tor properly selected?
	• For a analog RGB input, has the picture been properly adjusted?	E-42, 43
Image is distorted	• Is the projector properly installed?	E-24
	• For trapezoidal (keystone) distortion, perform keystone adjustment.	E-29, 48
Image is out of focus	• Is the lens properly focused?	E-25
	• Are the screen and projector installed at the proper distance?	E-14
	• Does the projection distance exceed the focusing range?	E-14
	• Is there condensation on the lens, etc.?	—
	If the projector is moved from a cool storage area to a warm place and the
	power is turned on, condensation may form on the lens or internal optical
	parts. If this happens, wait until the condensation has evaporated before
	using the projector.
Image is not in proper po-	• For a computer input, are the horizontal and vertical positions properly ad-	E-43
sition and is not displayed	justed?
properly	• Does the input signal have a compatible resolution and frequency? Check	E-62
	the computer’s resolution.
Video image is crushed	• If the image is crushed in the horizontal or vertical direction or if it is not	E-27
	displayed over the entire screen, select a different aspect ratio.
Colors of the overall image	• When a component signal is being input, is the color space setting proper?	E-45
are strange	• For a composite input, is the hue properly adjusted?	E-42
Characters flicker or colors	• From the menu, select “Image” and adjust the clock frequency and phase.	E-42, 43
are offset for analog RGB
inputs
Cannot select the menu	• Other than [Setup], [Option] and [Info], selection will not be possible unless	—
name	a signal is being input to the projector and the image/picture is projected.
Remote control unit does	• Are the remote control unit’s batteries worn? Replace with new batteries.	E-12
not operate	• Is there an obstacle between the remote control unit and the projector’s	E-12
	remote control signal sensor?
	• Is the remote control unit outside of range?	E-12
	• Are you pointing the remote control unit’s transmitter towards the projector’s	E-12
	remote control signal sensor?
STATUS indicator is lit red	• See “When an indicator is lit or blinking”.	E-55
or blinking red

E-56