Caple C702G Wartungshandbuch PDF herunterladen (Seite 126)

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………………………………………………………………………………. 8-12

6) Rotation Correction Circuit…………………………………………………………………………………… 8-12

7) H Centering Circuit……………………………………………………………………………………………. 8-14

2-3. VERTICAL DEFRECTION CIRCUIT.....................................................................................................8-15

1) Sawtooth wave generating, vertical size and position control and linearity control circuits..................8-15

2) Vertical filter circuit............................................................................................................................... 8-15

3) Vertical output amplifier circuit..............................................................................................................8-16

3. HIGH VOLTAGE CIRCUIT

………………………………………………………………………………………… 8-17

1) High Voltage Control Circuit……………………………………………………………………………………. 8-17

2) High Voltage Output Circuit…………………………………………………………………………………….. 8-17

3) High Voltage Protector Circuit…………………………………………………………………………………. 8-17

4 .BLANKING CIRCUIT

……………………………………………………………………………………………… 8-19

1) Blanking Circuit………………………………………………………………………………………………….. 8-19

2) Spot Killer Circuit………………………………………………………………………………………………… 8-19

3) Auto Adjust Blanking Circuit……………………………………………………………………………………. 8-19

5. DYNAMIC FOCUS CIRCUIT

…………………………………………………………………………………..…. 8-20