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

Page 47

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.	22
		sound.	•	Make sure the input mode is set to TV.	22
			•	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	There is no	•	Fluorescent lamp may have reached the end of	49
	Picture	picture.	•	Fluorescent lamp may have reached the end of	49
		picture.		service life.
		There is no		service life.	45
		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.	23
		There is no	•	Make sure the sound is not set to mute.	23
		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.	31, 32
		Picture is light	•	Check COLOR SYSTEM setting.	31, 32
		Picture is light
		or improperly
		tinted.
			•	Press the BRIGHT button or set the BRIGHTNESS	27
		The picture is		settings.
		The picture is	•	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.

47

LC-20B4U(E)-e

47

03.2.26, 3:33 PM

Image 47

Contents Rear of the TV To aid reporting in case of loss or theft, pleaseImportant Information Dear Sharp Customer Important Safety Precautions Service Equipment Contents AC Adapter Supplied AccessoriesAAA size UM/SUM-4 Dry Battery ⋅2 Antenna Cable AC CordPreparation Using the Remote ControlBatteries for the Remote Control Antenna Connection PreparationMain Power Power ConnectionVOL -/+ Menu TV/VIDEO Main PowerRemote control sensor Display and Control OverviewDisplay and Control Overview Removing the Back Cover Listening with HeadphonesRemote Control Menu EZ Setup with Auto Clock SettingEZ Setup during the First Power On EnterTo cancel EZ Setup Press c EZ Setup with Auto Clock SettingPress a/bto move the cursor to Setting the ClockAuto Clock Setting Time reset for power outage, AC adapter disconnectedPress a/bto move the cursor to START, and press Enter Setting the ClockPress c/dto select Auto or Spring Autumn Manual Clock SettingDaylight Saving-Time DST Adjustment Basic Operation TV signals in your regionTo turn off the LCD TV Turning on PowerBasic Operation StandbyTV/VIDEO Switching TV/VIDEO AV1/AV2/COMPONENT/TV ModesTurn on the power of the con OMP on E N TVOL + Sound VolumeTo mute the sound To select MTS Multichannel TV SoundTo 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 the Menu screen AdjustmentsAdjusting Sleep Timer Settings Directly setting the Sleep TimerDark AdjustmentsAdjusting Brightness Settings Bright NormalYou can set the orientation of the picture Adjusting Picture Flip SettingsDirectly setting the Picture Flip Setting the Picture Flip on the Menu screenABC Adjusting Preset SettingsAdjusting Language Settings Press a/bto move the cursor to the desired item, and press Adjusting Video Adjust SettingsPress a/bto move the cursor to Video ADJUST, and press Lower color intensity Higher color intensity Selected item Press c Press dDecrease contrast Increase contrast Toward purple Toward greenPress a/bto move the cursor to CH-SETTING, and press Enter EZ SetupSetting the AIR/CABLE Channel Select SET UPSaving broadcast TV channels in the memory Press a/ bto move the cursor Adjusting Blue Screen SettingsBlue Screen Press Enter to change the Closed Caption setting Adjusting Closed Caption SettingsSetting Closed Caption Setting the Closed Caption on Menu screenMpaa Rating Adjusting V-CHIP SettingsChip TV Parental Guidelines TV Parental GuidelinesPress a/bto move the cursor to V-CHIP BLOCK, and press Setting V-CHIP Mpaa RatingTV Guidelines Setting TV GuidelinesTV GUIDELINES, and press Setting Block ContentBlock CONTENT, and press Repeat steps 1 to 3 of 1 Mpaa RATING. SeeActivating V-CHIP Block Setting StatusChanging or Clearing the Secret Number Changing V-CHIP Block SettingsCamcorder Connecting External DevicesExample of external devices that can be connected ExampleAudio L Audio R To Component input Audio terminal Connecting External DevicesTo AV-IN2 terminal Video Audio L Audio R VCRConnect 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 TroubleshootingItems Model LC-20B4U SpecificationsUnit inch mm Dimensional DrawingsSharp Corporation Sharp Electronics CorporationLimited Warranty