Curtis LCD2277 manual Appendix, Troubleshooting, Symptom of Trouble

APPENDIX

TROUBLESHOOTING

The Symptom of Trouble

Attempt the following steps to diagnose the symptom you have seen. If the symptom couldn’t be corrected, please contact the dealer.

Symptom		Possible causes	Correct measures
	1. The antenna cables may be		1.	Connect antenna cables
		disconnected.
				again or change the plug.
	2. The antenna cables may be
There are spots on the			2.	Connect antenna cables
		disconnected or cankered.
screen, and the sound	3.	The antenna cables may be		again or change new cables.
is not clear when you		weak.	3. Adjust antenna again.
watch TV.	4.	The weather is bad.	4. There is no need to correct.
	5.	The transmitter is wrong.	5.	Check with local operator.
	1. The antenna cables may be		1. Adjust antenna again.
		weak.
			2.	Search channels again or
	2.	The television could not
The picture is doubled				adjust television.
		tune correctly.
or tripled,	3.	The weather is bad	3. There is no need to correct.
but sound is good.	4.	The transmitter is wrong.	4.	Check with local operator.
	5.	Television input incorrectly.	5.	Check the outside devices.
	Your unit is being affected by		Check the shield contains of
Disturb Intermittent	other television, automobiles,		television and put the
	fluorescent lamps,		television as far away as
	portable radio.		possible through cables.
	1.	Television is under AV mode.	1.	Check the picture/sound
	2.	The picture and volume are
			control (enter main menu).
No picture & No sound	set to minimum.
			2.	Make sure power in on.
	3.	The television is under sleep
	mode or electricity-saving mode.

NOTE : Consumer should not repair by yourself, high-voltage is in unit, please request professional worker to repair if meet trouble.

APPENDIX

TROUBLESHOOTING

DEFECT JUDGEMENT

According to the device species, it is possible to display image normally. In this condition, please adjust as following steps.

Phenomena	Check Parts
No picture, Indicator	1.Check the connection of Power cord.
light if off.	2. Connect to the power switch.
	1. Check the signal cable is properly connected.
Display “NO SYNC	2. Make sure the power switch of computer and video
	Device is on.
SIGNAL”, no picture,
	3.Make sure the computer is not under electricity-saving
Indicator light is green.	Mode.
	4. Check input whether match the interface.
Display “Invalid Scan	Could not receive the input signal normally.
Fred” on the screen	1. Check whether the computer resolution has been out of
when you connect	Television resolution range.
to a computer.	2. Check the signal cable is properly connected.
Power indicator light is	1.Check the contrast ratio and brightness setting
normal, but no picture.	(increase the contrast ratio and brightness setting)
The image appears distorted.	Adjust point pulse rate and phase position.
The text on the screen appears
	(First to adjust Point pulse rate, then adjust
vertical streaks, and character	the phase position.) (RGB input)
is not clear.
The text on the screen is not	Adjust the point impulse phase position to
clear. The picture appears
	get optimization effect. (RGB)
shaking when display.
The remote control	1. Check whether the remote control has installed
	with the batteries and polarity.
doesn't work.	2. Check whether the batteries are good.
	3. Check whether the batteries have been dead.

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