Filter
Top Products
14
Troubleshooting
Solutions to common problems related to the monitor are described here. If none of the solutions
presented here solves the problem, unplug the monitor and consult an authorized dealer or service
center.
Symptom Probable cause and corrective action Page
No power supply
• Firmly insert the AC power plug.
8
No picture with the
power on
• Select the correct input with INPUT SELECT buttons.
• Connect the signal cable firmly.
• Turn on the power of the connected component and set the output
correctly.
• Check if the input signal format is acceptable on the monitor.
6
8
—
9
No sound
• Adjust the volume level.
• Connect the signal cable firmly.
• Turn on the power of the connected component and set the output
correctly.
6
8
—
“OTHERS” or “Out
of range” appears.
• Check if the input signal format is acceptable on the monitor. 8, 9
“NO SYNC”
appears.
• Select the correct input with INPUT SELECT buttons.
• Connect the signal cable firmly.
• Select the correct sync signal (“SYNC TYPE”) of “SYNC FUNCTION”
in the SET UP MENU.
• Turn on the power of the connected component and output video
signals. Or, check if the video output of the component (video output
setting of the VCR or graphic board of the computer) is set correctly.
6
8
12
—
Wrong color, no
color
• Adjust the picture using the adjustment buttons on the front panel or
adjust the items of “PICTURE SUB ADJ.” in the SET UP MENU. Or,
perform “reset” in “PICTURE SUB ADJ.”
• Select the proper color system (“COLOR SYSTEM”) in the MAIN
MENU.
• Adjust the items of “WHITE BALANCE SET.” in the SET UP MENU.
Or, perform “reset” in “WHITE BALANCE SET.”
6, 11
10
11
High luminance
parts of pictures
are not displayed
properly.
• Adjust the contrast using the adjustment buttons on the front panel
or adjust the “CONTRAST” of “PICTURE SUB ADJ.” in the SET UP
MENU.
• If the Picture Mode is “DYNAMIC,” select another one.
6, 11
6
The following are not malfunctions.
• When a still image is displayed for a long time, it may remain indistinctly on the screen after the picture has
changed. Though the remaining picture will disappear after a while, there may be a case that it remains
for a long period depending on the length of time the still image was displayed for. This is due to the
characteristics of the LCD display and is not a malfunction.
• The red spots, blue spots and green spots on the panel surface are a normal characteristic of LCD displays,
and not a problem. The LCD display is built with very high precision technology; however, be aware that a
few pixels may be missing or constantly lit.
• The following symptoms are problems only when pictures or sounds are not played back normally.
– A slight electric shock occurs when you touch the monitor.
– The top and/or rear panel of the monitor becomes hot.
– The monitor emits a cracking noise.
– The monitor emits a mechanical noise.
Symptom Probable cause and corrective action Page
The picture
becomes blurred.
• Adjust the picture contrast or brightness by using the adjustment
buttons on the front panel. Or, adjust “CONTRAST” or “BRIGHT” of
“PICTURE SUB ADJ.” in the SET UP MENU.
6, 11
Wrong picture
position, wrong
picture size.
• Check if the setting of SCAN SIZE is appropriate.
• Check if the input signal format is acceptable on the monitor.
• Check if the setting of aspect ratio is appropriate.
• Adjust the picture size (H.SIZE/V.SIZE) or position (H.POSI./V.POSI.)
of “SIZE/POSI. ADJ.” in the SET UP MENU. When you input analog
RGB signals, perform “AUTO ADJUST” first.
• For some signals, the picture cannot be displayed fully in the effective
screen area. There is no sure method to solve this problem.
6
9
10
10, 11
—
Some items do not
appear on the menu.
• The items which are not available for the current input or the current
input signal are not displayed on the menu. Change the input or the
input signal.
• The items controlled by the MAKE system are not displayed on the
menu.
—
13
Buttons on the
monitor do not
work.
• Set “CONTROL LOCK” in the SET UP MENU to “OFF.”
• You cannot use the buttons for the items controlled by the MAKE
system. Disable the external control.
12
13
LMH191&171EA_EN.indd 14LMH191&171EA_EN.indd 14 08.7.8 5:40:30 PM08.7.8 5:40:30 PM