LG 42LT55A Instrukcja Użytkownika Pobierz pdf (Strona 64)

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TROUBLESHOOTING

'Key Lock On' message appears.

Problem Resolution

The 'Key Lock On' message

appears when pressing the

Menu button.

The Lock function prevents the OSD settings from being changed

inadvertently. To release the lock, go to Menu and Option and disable

the Key Lock option.

The screen image looks abnormal.

Problem Resolution

Is the screen position wrong?



D-Sub analog signal - Press the "AUTO" button in the remote control

to automatically select the optimal screen status that fits into the

current mode. If adjustment is not satisfactory, select [PICTURE] -

[Screen] - [Position] in OSD menu.



See if the video card resolution and frequency are supported by the

product. If the frequency is out of range, set to the recommended

resolution in the Control Panel "Display" Setting menu.

Do thin lines appear on the

background screen?



D-Sub analog signal - Press the "AUTO" button in the remote control

to automatically select an optimal screen status that fits into the

current mode. If adjustment is not satisfactory, select [PICTURE] -

[Screen] - [Size] in OSD menu.

Horizontal noise appears or the

characters look blurred.



D-Sub analog signal - Press the "AUTO" button in the remote control

to automatically select an optimal screen status that fits into the

current mode. If adjustment is not satisfactory, select [PICTURE] -

[Screen] - [Phase] in OSD menu.

The screen is displayed

abnormally.



The proper input signal is not connected to the signal port. Connect

the signal cable that matches with the source input signal.

After-image appears on the product.

Problem Resolution

After-image appears on the

product.



If you use a fixed image for a long time, the pixels may be damaged

quickly. Use the screen-saver function.



When a dark image is displayed on the screen after an image with

high contrast (black and white or gray), this may cause image sticking.

This is normal for LCD screen.

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