8-1
CIRCUIT DESCRIPTION
TABLE OF CONTENTS
Page
1. VIDEO CIRCUIT ………………………………………………………………………...…………..……….…… 8-3
1) Selection of BNC/D-SUB Input ………………………………………………………………….....…………. 8-3
2) Video Signal Amplification Section …………………………………………………………………………... 8-4
3) Video Bias Circuit ……………………………………………………………………………………....……… 8-5
4) ABL Circuit ……………………………………………………………………………………………………… 8-5
5) On Screen Manager (OSM) …………………………………………………………………………………... 8-6
6) Self Test …………………………………………………………………………………………………….…… 8-6
2. DEFLECTION CIRCUIT ………………………………………………………………………………………..... 8-7
2-1. The oscillation and deflection control integrated circuit ……………………………………….…………. 8-7
1) Digital Signal Processor (DSP) .......................................................................................................... 8-7
2) 1bit D/A converter ( 1bit DAC ) …………………………………………………………………………….. 8-7
2-2. HORIZONTAL DEFLECTION CIRCUIT …………………………………………………………....……... 8-8
1) Horizontal oscillation circuit and Horizontal position control circuit ………………………………….…. 8-8
2) Distortion correction circuit …………………………………………………………………………….....… 8-9
3) Horizontal Drive Circuit …………………………………………………………………………………...... 8-11
4) Horizontal Deflection Output Circuit ………………………………………………………………………. 8-11
5) Horizontal Size Control Circuit …………………………………………………………………………….. 8-11
6) Rotation Correction Circuit ………………………………………………………………………..………. 8-13
7) H Centering Circuit …………………………………………………………………………………..…….. 8-13
2-3. VERTICAL DEFRECTION CIRCUIT ……………………………………………………………………… 8-14
1) Sawtooth wave generating, vertical size and position control and linearity control circuits ………… 8-14
2) Vertical filter circuit …………………………………………………………………………………………. 8-14
3) Vertical output amplifier circuit ……………………………………………………………………………. 8-15
3. HIGH VOLTAGE CIRCUIT ……………………………………………………………………………………… 8-16
1) High Voltage Control Circuit …………………………………………………………………………………. 8-16
2) High Voltage Output Circuit …………………………………………………………………………………... 8-16
3) High Voltage Protector Circuit ……………………………………………………………………………….. 8-16
4 .BLANKING CIRCUIT ………………………………………………………………………………………….... 8-18
1) Blanking Circuit …………………………………………………………………………………………..…… 8-18
2) Spot Killer Circuit …………………………………………………………………………………………..…. 8-18
3) Auto Adjust Blanking Circuit ………………………………………………………………………………….. 8-18
5. DYNAMIC FOCUS CIRCUIT ……………………………………………………………………………..……. 8-19
1) The horizontal parabolic wave generation and gain control circuit ………………………………………. 8-19
2) The vertical parabolic wave generation and gain control circuit …………………………………………. 8-19
3) The output amplifier circuit and the coupling circuit ……………………………………………………….. 8-19
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