LG V7550 Service Manual page 9

15. Image Rotation (Tilt) Circuit.
This circuit corrects the tilt of the screen by supplying the
image rotation signal to the tilt coil which is attached near
the deflection yoke of the CRT.
16. Video Pre-Amp Circuit.
This circuit amplifies the analog video signal from 0-0.7V
to 0-4V. It is operated by taking the clamp, R, G, B drive
and contrast signal from the Micom(IC401).
Video pre-amp has OSD function.
17. Video Output Amp Circuit.
This circuit amplifies the video signal which comes from
the video pre-amp circuit and amplified it to applied the
CRT cathode.
18. Display Power Management Circuit
This circuit control power consumption of the monitor by
detecting H and V sync signal.There are off mode.When no
horizontal or vertical sync signal input, the circuit consists of
Q941 and Q951 becomes off mode.It's power consumption
is below 4W.When the power switch is off it's power
consumption is below 1W.