CIRCUIT DESCRIPTION
TABLE OF CONTENTS
1.,
PowerSupplyCircuit
..........................................................................................................................................
35
(l-l) SWITCHING
REGULATOR
UNIT
............................................................
.
.................................................
36
(a) Rectifying and filtering circuit
....................................................................................................................
36
(b)
Auxiliary
power
supply
circuit....................................................................................................................
36
(c)
Converter
circuit........................................................................................................................................
37
(d)
Outputrectifying
circuit
.............................................................................................................................
37
(e) Error detection amplifier circuit
.................................................................................................................
38
(9
Oscillatingandcontrol
circuit
....................................................................................................................
38
(g) Overvoltage protection
..............................................................................................................................
39
(h)
Autoand
Manual
Degaussing
circuit
........................................................................................................
39
(1-Z) HV Voltage Circuit
......................................................................................................................................
40
(l-3) DC/DC converter for H deflection circuit
.................................................................................................... 44
(l-4)
Low voltagechopper
regulator circuit
........................................................................................................
47
2.
Interface
circuit
...................................................................................................................................................
49
(2-l) Sync Interface Circuit
.................................................................................................................................
49
(2-2) Sync switch and Video Clamp pulse Circuit
..............................................................................................
50
(2-3))
Self Test
Circuit
..........................................................................................................................................
51
3. Video System
.....................................................................................................................................................
52
(3-l)
Video
SignalAmplifier
................................................................................................................................
52
(3-2) Brightness and cut-off circuit
.....................................................................................................................
53
(3-3) Video Mute and Video Blanking Circuit
.....................................................................................................
54
(3-4)
ABL Circuit
.................................................................................................................................................
54
4. Digital
ControlSystem
........................................................................................................................................
55
(4-l) Digital Control Circuit
.................................................................................................................................
55
5. Deflection System
...................................................................................................................................
.
..........
59
(5-l)
HorizontalSystem
......................................................................................................................................
59
(5-1-l) H synchronization circuit
.....................................................................................................................
59
(5-l -2)
H
Phase
Circuit
...................................................................................................................................
60
(5-l -3)
H
Drive
Circuit
.....................................................................................................................................
61
(5-l -4) H Output Circuit
..................................................................................................................................
62
(5-l -5)Parabola Waveform
Generating
circuit
...............................................................................................
64
(5-2))
Vertical
System
..........................................................................................................................................
66
(5-2-l)
V
synchronization
circuit..................................................................................................................... 66
(5-2-2)
V
Position
Circuit................................................................................................................................. 67
(5-2-3)
V SizeCircuit
...................................................................................................................................... 68
(5-2-4)
Vertical
DeflectionCircuit.................................................................................................................... 69
34
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