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Troubleshooting
Check the following chart before consulting your Sony dealer.
Symptom
The unit will not turn on.
(The LED indicator is off.)
The power is turned off, but the LED
indicator stays lit.
The screen does not come on.
Images are not displayed properly.
When you turn off the unit while using the
DisplayPort input, the display becomes
unstable.
Images via the DisplayPort input are not
displayed properly.
Resolution loss (scan line gaps) occurs when
using dual-link mode (LMD-DM50/DM30).
The mouse cursor does not move smoothly.
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Troubleshooting
Cause and Solution
• Make sure the unit is plugged in (page 16).
• Check if the ?/a (power) switch is turned on.
• Even when the ?/a (power) switch is turned off in the standby mode, the LED
indicator stays lit for a few seconds. This is not a malfunction.
• Check if the cables are connected correctly.
• Check if the computer is turned on.
• If the LED indicator is lit in amber, the computer may be in the standby mode. Press
any key on the keyboard to activate the computer.
• The input signal frequency or display resolution may not be appropriate for the
specifications of the unit. Refer to the computer instruction manual and adjust the
frequency and/or resolution.
• If the LED indicator blinks twice or three times, there may be an error occurring.
Contact your Sony dealer.
• The display resolution for a given input signal may not be appropriate for the
specifications of the unit. Refer to the computer instruction manual and adjust
resolution.
• Data is sent by the DisplayPort while the computer is running. Do not turn off the unit
while receiving a DisplayPort signal.
Do not turn off the unit while the computer is running. Even if the unit is turned on
again, the screen might become unstable. Turn on the computer after turning on the
unit.
• A DisplayPort input signal might not be displayed properly, depending on the
combinations of graphics card, driver, OS, etc. For recommended graphics cards,
consult your dealer.
• It can happen when a single-link DVI cable is used. Use the supplied dual-link DVI
cable (page 11).
• Check the refresh rate (Fv) of the display mode.
The following setting will enable smooth movement:
Fv = 50 Hz for LMD-DM50
Fv = 60 Hz for LMD-DM30/DM20
For details about the setting method, refer to the instruction manual for the graphics
card.
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