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Troubleshooting
y
● The 'Key Lock On' message
appears when pressing the Menu
button.
●
Did you install the driver?
No image is displayed
'Unknown Product' message appears when the product is connected.
'Key Lock On' message appears.
* Maximum Resolution
RGB : 1920 x 1080 @ 60 Hz
HDMI/DVI : 1920 x 1080 @ 60 Hz
● Is the power cord connected?
●
Is the power indicator light on?
<M4225C>
●
Power is on, power indicator is
Blue
but the screen appears extremely dark.
<M3704C>
●
Power is on, power indicator is
Green
but the screen appears extremely dark.
● Is the power indicator amber?
● Does the 'Out of range' message
appear?
● Does the 'Check signal cable'
message appear?
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