Hitachi L37X01U Troubleshooting, When Following Messages Appear on Screen, Symptom and Check List

TROUBLESHOOTING

Before calling service technician, check the following tables fi rst. If the problem is not be solved with the suggested procedures, contact your local dealer. For your safety, NEVER try to repair the product by yourself.

When Following Messages Appear on Screen

Message	Condition / Action	Page
Power saving	This indicates it is in Power Save mode.	23 , 34 ,
	The indicating lamp pulses Blue or lights Red.	72
	The unit cannot detect any signals from any input terminals.
	• Check if the cable is connected correctly and fi rmly.	16 ~ 20
No sync. signal	• Check if the power of any external equipment is ON.
	• Check if the input selection matches the connection terminal.
	• Check if the PC is in Power Save mode or not.
Not available	This shows when the selected operation is not available.
Weak signal or channel not	• Check aerial lead if it is disconnected / damaged / misaligned.
available. Check aerial.	• Check with your dealer if it is out of signal area or not. (in DTT mode)
Encrypted Channel	• Check if the common interface module inserted correctly. (in DTT mode)	18 , 45

Symptom and Check List

Symptoms Check list Page

•Check the Indicating lamp status.

•Check the connection of the Power Cord and/or other

No picture - no sound	cables.		15 ~ 23
	• Check if the Main Power of the unit or external equipments is ON.
	• Check if the TV mode is selected.		27 , 72
	• Check if the TV is in “Standby mode” or “Power Save mode”.
	• Adjust the values in “Picture menu” and “Audio menu”.
Snowy picture-poor sound	• Check the aerial connection and direction.		15
	• The TV station may have broadcast diffi culties.
	Try another channel.
	• Check the aerial connection and direction.		15 ~ 20
Multiple images-normal sound	• Fine tuning the TV.
	• Check the connection of the external equipments.		32
	• The TV station may have broadcast diffi culties. Try another channel.
Intermittent interference	• Check if the source of interference is shielded well.
	• Remove those kinds of electrical devices away from the TV.
	• Check the volume level.
Normal picture, but no sound	• Check if the	button has been pressed or not.	26
	• Make sure that the headphone is NOT connected.
	• Check the connection of the external equipments.
	• Check the value level of “Brightness” and “Contrast” in
No picture - normal sound	“Picture Menu”.		36
	• Check if Radio broadcasting channels are received. (DTT
	mode only)
	• Check if the batteries are installed correctly.
	• The batteries might be exhausted. Replace them with new ones.
The remote control does not work.	• Remove all the obstructions in front of the sensor window on the unit.		11 , 12
	• Check if you select the correct function by Function Select
	(TV/DTT, DVD and SAT) buttons on the remote control.
	• Check if the buttons of the control panel can work.
Normal picture but no colour-normal	• Check the connection of the external equipments.		16 ~ 20
	• Check the “Colour System” in “Initial Setup” menu.
sound			30
	• Check the “AV Input” in “Initial Setup” menu.

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