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Serial Service Manual
LM721A
3. OPERATING INSTRUCTIONS
3.1 GENERAL INSTRUCTIONS
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By
changing these settings, the picture can be adjusted to your personal preferences.
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The power cord should be connected.
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Connect the video cable from the monitor to the video card.
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Press the power button to turn on the monitor, the power indicator will light up.
3.2 CONTROL BUTTONS
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Power Button:
When pressed, the monitor enters the off mode, and the LED turns blank. Press again to restore normal status.
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Left / Right Button:
When the OSD show on screen, Left/Right Button are used to control the monitor functions. Press to switch functions or adjust
settings. And if the OSD off, Left/Right buttons are used to control the audio volume;
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Auto Adjust Key:
The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase.
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Power Indicator:
Green
— Power On mode.
Orange
— Power Saving mode.
Blank
—Power Off Mode.
A. Menu button
B. Left button/Volume down
C. Right button/Volume up
D. Auto button/Exit
E. Indicator light
F. Power button
3.3 ADJUSTING THE PICTURE
CONTROL
A
B
C
Menu
Volume
D
E
F
Auto
LED
Power
Rev: A
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