Hitachi AVC01U manual TROUBLESHOOTING About LCD Display Technology, Symptom and Checklist

TROUBLESHOOTING

About LCD Display Technology

The following are common phenomena occurring when viewing LCD display devices due to its characteristics. Please note that these are not malfunctions.

Defective Spots on Panel

The LCD panel is manufactured with high-precision technology. However, there might be some spots that are not illuminated, or are brighter than others, or are in different colors, etc.

Surface on Panel

The LCD panel displays images by the fluorescent lamps internally. This can raise the temperature of the display surface.

In addition, do not allow any heavy impact to the front of the panel because the LCD panel is made of high precision glass.

Use Under Low Temperature Conditions

Because of the structural characteristics of the LCD panel, the response speed of the LCD panel becomes slower when the ambient temperature becomes too low. In some cases, this may result in a residual image.

The residual image will disappear of its own accord as the temperature rises again to a normal level.

Before calling a service technician, check the following tables first. If the problem cannot be solved with the suggested procedures, contact 800-HITACHI. For your safety, NEVER try to repair the product yourself.

When the Following Messages Appear on the Screen

Message	Condition / Action	Page
	This message comes from UT Monitor not A/V Center, indicates Monitor is in
Power Save	Power Save Mode(example: if you turn off only A/V Center and Power Save
	Mode is activated on UT Monitor).
	The indicating lamp lights in orange on UT Monitor.
	The unit cannot detect any signals from any input terminals.	14 ~ 15
No Sync. Signal	Check if the cable is connected correctly and firmly.
	Check if the power of any external equipment is ON.
	Check if the input selection matches the connection terminal.
Weak Signal or Channel not	This shows the selected channel is not available.	28
available.	Check the signal meter.

Symptom and Checklist

Symptoms	Checklist	Page
	Check if the power of the A/V Center and UT Monitor or
	external equipment is ON.
	Check the connection of the power cord and/or other cables.	14 ~ 15
No picture - no sound	Check if the correct mode is selected.
	Check if the UT Monitor is in “Standby mode” or “Power Save	27
	mode”.
	Adjust the values in “Picture” and “Audio” on UT Monitor
	menu".
Multiple images-normal sound	Check the connections to external equipment.	14 ~ 15
Intermittent interference	Check if the source of interference is shielded correctly.
	Move these kinds of electrical devices away from the unit.

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