Sharp LC-20B4U Troubleshooting, Problem Check item, Make sure the AC adapter is properly inserted

TROUBLESHOOTING

■Before calling for repair services, make the following checks for possible remedies to the encountered symptoms.

TV set

	Problem			Check item	Reference
					Pages
			•	Make sure the AC adapter is properly inserted in the	10
	Picture			power outlet.	–
Sound		There is no	•	Reception other than those of broadcasting stations
		picture or		can be considered.	22
		sound.	•	Make sure the input mode is set to TV.
			•	Make sure the MAIN POWER switch of the main unit	21
				is on.
		There is no	•	Make sure the BLACK LEVEL is properly adjusted.	31, 32
	Picture		•	Fluorescent lamp may have reached the end of	49
		picture.
				service life.
		There is no			45
			•	Make sure the S-VIDEO terminal has nothing con-
		picture from
				nected.
		AV-IN1.
			•	Make sure the volume is not set to minimum.	23
		There is no	•	Make sure the sound is not set to mute.	23
			•	Make sure that headphones are not connected.	13
		sound.
		There is no	•	Make sure the antenna cable is properly connected.	9
			•	Bad reception could be the problem.	–
		picture or
		sound, just
		noise.
			•	Make sure the antenna cable is properly connected.	9
		Picture is not	•	Bad reception could be the problem.	–
		clear.
			•	Check color adjustment.	31, 32
		Picture is light	•	Check COLOR SYSTEM setting.	31, 32
		or improperly
		tinted.
			•	Press the BRIGHT button or set the BRIGHTNESS	27
		The picture is		settings.
			•	Check PICTURE and BLACK LEVEL adjustment.	31, 32
		too dark.	•	Fluorescent lamp may have reached the end of	49
				service life.
			•	Check the batteries of the remote control.	8
Remote control does not work.			•	Make sure the remote sensor window is not under	8
				strong lighting.

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LC-20B4U(E)-e 47 03.2.26, 3:33 PM