Sharp LC-40D78UN Appendix, Troubleshooting, Problem, Possible Solution, No power, Pages 18 and

Appendix

Troubleshooting

Problem	Possible Solution
• No power	• Check if you pressed POWER on the remote control unit. Page 12
	If the indicator on the TV does not light up, press POWER on the TV.

•Is the AC cord disconnected? Page 8

•Has the power been turned on? Page 12

•	Unit cannot be operated.	•	External infl uences such as lightning, static electricity, may cause improper
			operation. In this case, operate the unit after fi rst turning off the power of the TV or
			unplugging the AC cord and replugging it in after 1 or 2 minutes.
•	Remote control unit does not	•	Are batteries inserted with polarity (e, f) aligned? Page 9
	operate.	•	Are batteries worn out? (Replace with new batteries.)
		• Are you using it under strong or fl uorescent lighting?
		• Is a fl uorescent light illuminated near the remote control sensor?
		•	Is "RC Control Lock" selected in "Operation Lock Out"? Page 25
•	Picture is cut off/with sidebar	•	Is the image position correct? Page 20
	screen.	•	Are screen mode adjustments such as picture size made correctly? Page 16
•	Strange color, light color, or	•	Adjust the picture tone.	Pages 18 and 19
	color misalignment	•	Is the room too bright? The picture may look dark in a room that is too bright.
•	Power is suddenly turned off.	•	Is the sleep timer set?	Page 13
		•	Check the power control settings. Page 19
		•	The unit's internal temperature has increased. Remove any objects blocking vent or
			clean.

• No sound • Is connection to other components correct? Page 11

•Is the volume too low? Page 13

•Is “Variable” selected in “Output Select”? Page 24

•Have you pressed MUTE on the remote control unit? Page 13

•Check the audio output of the connected external equipment. Is the volume too low or muted?

•When external equipment is connected via an HDMI cable, you may need to confi gure the audio to be output through the HDMI cable.

•When audio is not output from external equipment connected to the INPUT 4 or INPUT 6 terminal, check the "PC Audio Select" setting. Page 21

•Even when external equipment is connected using an HDMI-certifi ed cable, an audio cable connection may be required depending on the type of equipment and the media being played back. In this case, in addition to connecting an HDMI-certifi ed cable to the INPUT 6 (HDMI) terminal, connect a ø 3.5 mm stereo minijack cable to the AUDIO terminal and set "PC Audio Select" to "INPUT6 (HDMI)". Page 21

•When connecting a PC via an HDMI-certifi ed cable, check the following:

-Is the audio output of the PC confi gured correctly? Check the audio output settings and output audio format in Sound Properties on the PC.

Only PCM format audio can be output. Compressed audio (with a sampling rate of 32kHz, 44.1kHz, or 48kHz) and DTS format audio cannot be output.

-Depending on the board, only video signals may be output. In this case, in addition to connecting an HDMI-certifi ed cable to the INPUT 6 (HDMI) terminal, connect a ø 3.5 mm stereo minijack cable to the AUDIO terminal and set "PC Audio Select" to "INPUT6 (HDMI)". Page 21

•If you are using a DVI-HDMI conversion cable to connect external equipment to the TV, check the following:

-Is an audio cable connected? The DVI-HDMI conversion cable is for video only. Connect a ø 3.5 mm stereo minijack cable to listen to the audio.

-Is INPUT 6 being used? When the TV is connected to another HDMI terminal, the audio and video are not output together even if a ø 3.5 mm stereo minijack cable is connected to the shared AUDIO terminal for INPUT 4 and INPUT 6.

-Is "INPUT4 (PC)" selected in "PC Audio Select"? Page 21

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