LG 19CNT42K Instrukcja obsługi - Strona 24

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Troubleshooting

TROUBLESHOOTING

Nothing is displayed on the screen

Is the monitor's power cord plugged in?

Is the power indicator on?

Is the power indicator displaying as

red?

Is the power indicator blinking?

Is the "OUT OF RANGE" message

displayed?

Is the "CHECK SIGNAL CABLE"

message is displayed?

The "OSD LOCKED" message is displayed.

Is the "OSD LOCKED" message

displayed when the MENU button is

pressed?

The screen retains an image.

Does image sticking occur even

when the monitor is turned off?

NOTE

Vertical Frequency: In order to display an image, the screen must be refreshed dozens of times per

second like a fluorescent lamp. The number of times the screen is refreshed per second is called

vertical frequency or refresh rate and is represented by Hz.

Horizontal Frequency: The time it takes to display one horizontal line is called the horizontal cycle.

The number of horizontal lines displayed in one second

can be calculated by dividing one by the horizontal cycle. This is called horizontal frequency and is

represented by kHz.

y Check if the power cord is correctly plugged in to the outlet.

y Check the power indicator.

y Adjust the brightness and the contrast.

y If the monitor is in power saving mode, move the mouse or press any

key on the keyboard to switch the display on.

y Check if the computer is turned on.

y This occurs when signals transferred from the PC (video card) are out

of the horizontal or vertical frequency range of the monitor. Please see

the "Product Specification" section of this manual to set the appropri-

ate frequency.

y This is displayed when the signal cable between the PC and the moni-

tor is missing or disconnected. Check the cable and reconnect.

y The OSD lock feature is enabled to prevent undesired modification

of the OSD settings. Press and hold the MENU button for a couple of

seconds to unlock the OSD. (The "OSD UNLOCKED" message will be

displayed.)

y Displaying a still image for a prolonged time may cause damage to the

screen, resulting in the retention of the image.

y Use a screen saver to protect the screen when using the monitor for a

prolonged period of time.