Mitsubishi Electronics FD730U-G user manual Troubleshooting

Troubleshooting (continued)

No image appears on the screen. (continued)

Problem	Solution
The screen for	• PASSWORD FUNCTION in the FEATURE menu has been set to DISPLAY INPUT to
entering the password	enable the password lock.
appears.	 Enter the password or contact the person in charge of management of the
	projector. (See page 34.)
“NO SIGNAL” is	• Turn on the power of the connected device, or check whether there is something
displayed.	wrong with the connected device.
	• Check whether the external device output signals. (Check this especially when the
	external device is a notebook computer.)
	• Check that the cable connected to the external device isn’t defective.
	• Check that the projector is connected to the external device using the correct
	terminals.
	• Check that the connected device is correctly selected as the input source.
	• When an extension cord is being used, replace it with the supplied cable and check
	whether images are projected correctly. If images are projected correctly, use an RGB
	signal amplifier along with the extension cord.

Images are not displayed correctly.

Problem	Solution
Projected images are	• Check that the cable connected to the external device isn’t intermittent.
shaking.	• Connect the cable’s plug with the external device’s connector firmly.
Projected images are	• Press the AUTO POSITION button.
displaced.	• Some computers output out-of-spec signals on rare occasion. Adjust the SIGNAL
	menu. (See page 29.)
Projected images are	• Adjust the projector and the screen so that they are perpendicular to each other. (See
distorted.	page 14.)
Projected images are	• Adjust BRIGHTNESS and CONTRAST in the QUICK MENU or the IMAGE menu. (See
dark.	page 27.)
	• Replace the lamp. (See page 37.)
Projected images are	• Adjust the focus. (See page 16.)
blurred.	• Clean the lens.
	• Press the  or  button on the remote control to eliminate flicker.
	• Adjust TRACKING and FINE SYNC. in the SIGNAL menu. (See page 29.)
	• Adjust BRIGHTNESS and CONTRAST in the QUICK MENU or the IMAGE menu. (See
	page 27.)
	• Adjust the projector and the screen so that they are perpendicular to each other. (See
	page 14.)
Afterimages persist on	• This phenomenon is improved by keeping projecting an evenly bright image. (Such
the screen.	“image burn-in” phenomenon where afterimages persist on the screen may occur if a
	stationary image is kept displayed on the screen for a long time.)
White dots are seen	• This phenomenon is normal for a DLP™ projector and is not a malfunction. (A very
on projected images.	small number of pixels may visibly or invisibly be persistent all the time, but they are
Black dots are seen	not a sign of system malfunctions. Over 99.99% of the pixels are effective.)
on projected images.
Fine streaks are seen	• This is due to interference with the screen surface and is not a malfunction. Replace
on projected images.	the screen or displace the focus a little.
	• Vertical or horizontal streak noise may appear on the projected image, depending on
	the type of the DVD player, game console or computer you use. In such a case, you
	can reduce such streak noise by enabling the LPF.
Projected images	• Connect the plugs of the cables to external devices securely.
become wavy.	• Keep the projector away from equipment generating interfering radio waves.
	• When the keystone adjustment is carried out, the image may not be displayed
	correctly because of the type of input signal. This isn’t a product malfunction. In this
	case, readjust the keystone so that the amount of keystone correction is as small as
	possible.

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