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11. High Voltage Output & FBT(Flyback Transformer).
The high voltage output circuit is used for generating
pulse to the primary coil of the FBT(Flyback Transformer
(T701)). A boosted voltage(about 26kV) appears at the
secondary of the FBT and it is supplied to the anode,
focus, and screen voltage of the CDT.
12. H-Linearity Correction Circuit.
This circuit corrects the horizontal linearity for each
horizontal sync frequency.
13. Vertical Output Circuit.
This circuit takes the vertical ramp wave from the
TDA4856(IC701) and performs the vertical deflection by
supplying the saw-tooth current to the vertical deflection
yoke.
14. Dynamic Focus Output Circuit.
This circuit takes the horizontal and the vertical parabola
waves from the TDA4856(IC701) and amplifies it to
maintain constant focus on center and corners in the
screen.
15. H& V Blanking and Brightness Control.
Blanking circuit eliminates retrace line by supplying
negative pulse to the G1 of the CDT. And Brightness
circuit is used for control of the screen brightness by
changing DC level of the G1.
16. 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 CDT.
17. 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).
18. Video Output Amp Circuit.
This circuit amplifies the video signal which comes from
the video pre-amp circuit and amplified it to applied the
CDT cathode.
19. TCO Circuit
Purpose of this circuit is cancelling low frequency
electromagnetic emission of the CDT. Anode of the CDT
ripple is sensed by sensor and amplified by inverting
OPAmp(IC101). This exactly opposite phase signal
emission has effect on cancelling CDT’s electromagnetic
emission.
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