Sharp LC-20C3U Troubleshooting, Problem Check item, Make sure the AC adapter is properly inserted

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TROUBLESHOOTING

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

TV set

	Problem			Check item	Reference
	Problem			Check item	Pages
					Pages
			•	Make sure the AC adapter is properly inserted in the	10
	Picture			power outlet.	–
Sound	Picture	There is no	•	Reception other than those of broadcasting stations
		There is no	•	Reception other than those of broadcasting stations
		picture or		can be considered.	18
		sound.	•	Make sure the input mode is set to TV.	18
			•	Make sure the MAIN POWER switch of the main unit	17
				is on.
		There is no	•	Make sure the BLACK LEVEL is properly adjusted.	27, 28
	Picture	There is no	•	Fluorescent lamp may have reached the end of	48
	Picture	picture.	•	Fluorescent lamp may have reached the end of	48
		picture.		service life.
		There is no		service life.	44
		There is no	•	Make sure the S-VIDEO terminal has nothing con-
		picture from	•	Make sure the S-VIDEO terminal has nothing con-
		picture from		nected.
		AV-IN1.		nected.
		AV-IN1.
			•	Make sure the volume is not set to minimum.	19
		There is no	•	Make sure the sound is not set to mute.	19
		There is no	•	Make sure that headphones are not connected.	13
		sound.
		There is no	•	Make sure the antenna cable is properly connected.	9
		There is no	•	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.	–
		Picture is not
		clear.
			•	Check color adjustment.	27, 28
		Picture is light	•	Check color system setting.	27, 28
		Picture is light
		or improperly
		tinted.
			•	Press the BRIGHT button or set the BRIGHTNESS	23
		The picture is		settings.
		The picture is	•	Check PICTURE and BLACK LEVEL adjustment.	27, 28
		too dark.	•	Fluorescent lamp may have reached the end of	48
				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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Contents LC-13C3U LC-15C3U LC-20C3U Important Information Important Information Dear Sharp Customer Important Safety Precautions Important Safety Precautions Contents AC Adapter Cable Clamp ⋅2 Supplied AccessoriesAntenna Cable AC Cord Preparation Using the Remote ControlBatteries for the Remote Control Antenna Connection PreparationMain Power Power ConnectionVOL -/+ Menu Main Power TV/VIDEOSpeaker Left Subwoofer Remote control sensor Display and Control OverviewAV-IN1 Power Input DC12V LC-13C3UDisplay and Control Overview HeadphoneRemoving the Back Cover Listening with HeadphonesRemote Control Enter EZ SetupEZ Setup during the First Power On To cancel EZ Setup Press cBasic Operation TV signals in your regionTo turn off the LCD TV Turning on PowerBasic Operation StandbyTV/VIDEO Switching TV/VIDEO AV1/AV2/COMPONENT/TV ModesTo select MTS Multichannel TV Sound Sound VolumeTo mute the sound To select a 3-digit channel number e.g., Channel Changing channels with CH / on the remote controlChanging Channels Press the button Press the 5 buttonSelecting Menu Items Selecting Menu ItemsSetting the Sleep Timer on Menu screen AdjustmentsAdjusting Sleep Timer Settings Directly setting the Sleep TimerDark AdjustmentsAdjusting Brightness Settings Bright NormalPIC. Flip Adjusting Picture Flip SettingsDirectly setting the Picture Flip Setting the Picture Flip on the Menu screenPress a/bto move the cursor to the desired item, and press Adjusting Preset SettingsAdjusting Language Settings Screen Adjusting Video Adjust SettingsPress Menu to return to the main LC-20C3U LC-13C3U/LC-15C3USetting the Subwoofer on the Menu screen AdjustmentAdjusting Audio Adjust Settings Directly setting the SubwooferBass Selected item Press c Press dSubwoofer TreblePress a/bto move the cursor to CH-SETTING, and press Enter Setting the AIR/CABLEChannel Select SET UPSaving broadcast TV channels in the memory Use a/bor Channel Select toTo Blue SCREEN, and press Adjusting Blue Screen SettingsBlue Screen Press a/ bto move the cursorDirectly setting the Closed Caption Adjusting Closed Caption SettingsSetting Closed Caption Menu Mute Setting the Closed Caption on the Menu screenMpaa Rating Adjusting V-CHIP SettingsChip TV Parental Guidelines TV Parental GuidelinesTo V-CHIP BLOCK, and press Setting V-CHIP Mpaa RatingTV-Y7, and press Enter Setting TV GuidelinesTV Guidelines Press a/bto move the cursor to TV GUIDELINES, and press Setting Block ContentPress a/bto move the cursor to Block CONTENT, and press Repeat steps 1 to 3 of 1 Mpaa RATING. SeeChannel Setting StatusActivating V-CHIP Block Repeat steps 1 to 2 of 1 Mpaa RATING, or 1 to 2 Changing V-CHIP Block SettingsChanging or Clearing the Secret Number Laser disc player Connecting External DevicesExample of external devices that can be connected ExampleVCR Connecting External DevicesConnect to a VCR, audio amplifier, etc Outputting video and audio video outputBundling Cables with Clamps Make sure the AC adapter is properly inserted TroubleshootingProblem Check item Power outletAntenna TroubleshootingW × 2 + 3.5 W × SpecificationsItems Model LC-13C3U LC-15C3U LC-20C3U Unit inch mm Dimensional DrawingsDimensional Drawings LC-20C3U Sharp Corporation Sharp Electronics CorporationLimited Warranty Sharp Electronics Corporation