LG 57M - Manual (Page 23)

A20
Troubleshooting
Symptom: SELF DIAGNOSTICS message.
Possible causes:
The signal cable is not connected.
Symptom: OUT OF FREQUENCY message appears.
Possible causes:
The frequency of the sync input is outside the operating range of
the monitor.
HORZ: 30kHz-70kHz
VERT: 50Hz-120Hz
Use the graphics board's utility software to change the frequency
setting(Refer to the manual for graphics board)
Symptom: The power LED is illuminated amber
Possible causes:
Display power management mode.
These is no sync signal.
The signal cable is not fastened securely.
Check the computer power and graphics adapter configuration.
The signal cable is incorrectly configured or connected. Refer to
Signal connector pin assignment on page 22 for reference.
Symptom: The image on the SCREEN is not centered, or too small,
or not a rectangle shape.
Possible Causes:Image adjustment not been done yet in the current
operating mode. Use the SELECT and
or buttons to set the
image to your liking.
Symptom:The monitor doesn't enter the power saving off mode
(Amber LED).
Possible Causes:Computer video signal is not VESA DPMS
standard. Either the PC or the video controller card is not using the
VESA DPMS power management function.
O U T O F F R E Q U E N C Y
H F : 1 2 0 . 8 k H z
V F : 1 1 0 . 0 H z
O P E R A T I N G F R E Q U E N C Y
H F : 3 0 - 7 0 k H z
V F : 5 0 - 1 2 0 H z
P O W E R S A V E A F T E R 2 0 S E C