Mitsubishi Electronics HC4000 user manual Troubleshooting, Images are not displayed correctly

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 35.)
“NO SIGNAL” is	• Turn on the power of the connected device, or check whether there is something wrong
displayed.	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 may be jagged	• Make sure if the cable is firmly plugged into the connecting terminal.
when connecting the	• To accept and display 1080p signals on the screen, make sure to use a high-speed
projector using the	HDMI cable that can transmit 1080p signals.
HDMI cable.	• When connecting the projector through a HDMI Signal Distributor or AV amplifier via
“NO SIGNAL” is	the HDMI cable, make sure that the HDMI Signal Distributor or AV amplifier support
displayed when	HDMI 1.3 Deep Color.
connecting the
projector using the
HDMI cable.
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	• Project an image containing many characters such as a help menu and press the
displaced.	AUTO POSITION button.
	• Some computers output out-of-spec signals on rare occasion. Adjust the SIGNAL
	menu. (See page 34.)
Projected images are	• Adjust the projector and the screen so that they are perpendicular to each other. (See
distorted.	page 10.)
Projected images are	• Adjust BRIGHTNESS and CONTRAST in the IMAGE menu. (See page 31.)
dark.	• Replace the lamp. (See page 36.)
Projected images are	• Adjust the focus. (See pages 18 and 23.)
blurred.	• Clean the lens.
	• Press the t or u button on the remote control to eliminate flicker.
	• Adjust TRACKING and FINE SYNC. in the SIGNAL menu. (See page 34.)
	• Adjust BRIGHTNESS and CONTRAST in the IMAGE menu. (See page 31.)
	• Adjust the projector and the screen so that they are perpendicular to each other. (See
	page 10.)
White dots are seen	• This symptom is normal for a DLPTM projector and is not a malfunction. (A very small
on projected images.	number of pixels may stay lit or out, but such symptom is not a malfunction. Pixels of
Black dots are seen on	99.99% or more are effective.)
projected images.
Rainbow effect is seen	• This is due to color breaking noise that occurs in a DLPTM system and is not a
on projected images.	malfunction.
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 or game console you use. In such a case, you can reduce
	such streak noise by enabling the LPF. (See page 29.)

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