Specifications

Contents

Introduction to the CA10 Chassis .............................................. Page 1

CA10 Receiver Specifications ................................................ Page 2

CA10 Block Diagram ....................................................... Page 3

Power Supply ............................................................ Page 4

Mains input circuit ................................................... Page 4

Standby operation ................................................... Page 5

Start up operation ................................................... Page 5

Voltage regulation ................................................... Page 8

Supply increase .............................................. Page 8

Supply decrease .............................................. Page 9

Protection ................................................... Page 9

Over current control ................................................ Page 10

Snubber circuit .................................................... Page 10

Power on control ................................................... Page 11

Primary processor power supply ................................. Page 11

Power supply turn on ......................................... Page 11

Primary Processor ........................................................ Page 12

System Control .......................................................... Page 13

Resets and oscillators ............................................... Page 13

Data communication ................................................ Page 14

I C bus .................................................... Page 14

Parallel communication ....................................... Page 14

Protection circuits .................................................. Page 15

Software reset ..................................................... Page 15

Line Stage .............................................................. Page 16

Line time base generation ............................................ Page 16

Line drive circuit description .......................................... Page 16

Line output circuit description ......................................... Page 18

Line scan correction ................................................ Page 19

Sand castle pulse .................................................. Page 19

East/West correction ................................................ Page 21

Principle of circuit operation .................................... Page 21

Circuit operation ............................................. Page 21

Pulse width modulator ........................................ Page 21

Drive Circuit ................................................ Page 21

Supplies generated by the line stage .................................... Page 24

Beam current limiter ................................................ Page 25

Beam limiting input of IC201 ................................... Page 25

Vertical circuit failure - CRT protection ............................ Page 26

EHT input of IC201 ........................................... Page 26

Vertical Stage ........................................................... Page 27

Vertical time base generation ......................................... Page 27

Vertical scan coil drive circuit ......................................... Page 29