Genius 2793, ISO XFR-75W, 2093, 1493, 3693, 1793, 1993, ISO XFR-100W Error, Comp, Delay, Output, +28V

SWITCH MODE POWER SUPPLY SCHEMATIC.

V+ plus 20V

---Video Supply

+24, 28V to Vertical Deflection.

V+ plus 5V---H. Raster Shift

+16V, 18V to 12V Regulator.

V+ minus 5V---H. Raster Shift

167A

V+

JA -1.5V

JB -3V

+ 100uF

100uF

0Ω

1N4937

20

120

+ 118

+

182

198A

170

2.33K

4.67K

+16V

1N4937

193K

J13

J14

250V

1N4937

1N4937

+1,000uF

+1mF

169

1,000uF

J1

1N5954B

175

171

387

GND

+

1

2SA1371E

121

122

167

450

100K

160V Zener

GND

181

1 SMXFR

112

113

16.3-19VDC 55, E1

V+

2

6

+28V

8

3

5

4

6

6.5-7.5VDC

1

1N4937

+15V

16

14.8-18VDC

10.6K

41,D1

INPUT

1N4937

J5

1,000pF

ERROR

+17V 15

30Ω

9

168 FR205

JD

110

AMP.

INPUT

132

139

141

10

12

260Ω

3

5

142

+3V

2

J16

5

6.5-7.5VDC

166

2.2nF

INPUT

JC

88K

18Vz

149

From Fault Crcuit

130Ω

3

Over

150

+1.5V

J4

.5-.8VDC

14

5.5-6.8VDC

1N4148

J15

COMP. Voltage

FR205

4

56pF

Protect }

16

126

3,300pF

11K

3.3nF

INPUT

.1uF

130

108

107

4

38.3K

148

124

J2

3.4-4.2VDC

Output

V-

J9

2.2nF-230V

2

23.2K

20

125

56pF

3-5VDC

CONTROL &

No DVM

152

J3

5Vpp 52,F1

1.00M

1.00M

FAULT SENSE

FR205

.1-.5VDC

12

134

300Vpp 40,G1

104

J10

See

230V

5

4uS

COMP.

13

17

18

Table

DELAY

3-6VDC

151

106

105

9

+

2SK1446LS

HEAT

103

14.7K

15.8K

0.1VDC

SINK

REMOVE

33.2K

6

OUTPUT

5.7-6.3VDC

Rx

J11

J12

135

62K

1Vpp 51,F1

FOR

230V

143A

J7

Current

11

12

510Ω

136

220pF

0Ω

Osc.

36K

1KV

GND

144

SENSE

1-4VDC

J8

13

152

143B

138

12Vpp 50,E2

47Ω

0Ω

7

0.33Ω

2.2nF

Cx

10

18Ω

250V

DRIVE

1/2W

114

102

2W

155

163

133

137

CC

8,14

140

FR205

7

8

+7.5V REF.

V-

9

90K

1N4005

3-4VDC

XRC5184

J PRA

MPSA64

V-

156

J6

116

3Vpp

47,D2

115

D

TP49, G1

2.2nF-230V

111

127

100pF

100uF

153

220pF

2,200pF

129

128

123

131

FR205

V-

J PRA PINS:

3,10,15, & 19

V-

230V

0VDC Hs

NOTES:

POWER SUPPLY VOLTAGES REFERENCED FROM V-.

154

27Vpp 57,F1

SCOPE GND MUST NOT BE CONNECTED TO GND AND V- AT THE SAME TIME.

POWER

VOLTAGE

CURRENT

CIRCUIT SUPPLIED

DIODE

FILTER CAP.

Inrush Current Limit

SUPPLY

17VDC

7mA

POWER SUPPLY CONTROL

141

100uF

128

LOW VOLTAGE

16VDC

500mA

VIDEO AND INPUT

170

1,000uF

171

+24V

C-200-7

SECONDARIES

24-27VDC

350mA

V. & H. DEFLECTION

168

1,000uF

173

159

V+ MODIFIER

(V+) -5VDC

150mA

H. RASTER SHIFT - LEFT

121

100uF

118

.5A,240V

25-.5Ω

(V+)+5VDC

150mA

H. RASTER SHIFT - RIGHT

122

100uF

120

SECONDARIES

Relay

(V+)+20VDC

60mA

1VIDEO BOOSTER

167

220uF

174

GND

The degaussing coil drive

158

Posistor

468

circuit may use a dual posistor

CPR0430

158 or a single posistor with a

CPR0434

3A Fuse

0Ω

shorting relay 468 .

The off

471

TR250-145U

146

current of the single posistor is

160

145

large enough to cause raster

CC3

movement when there is a

Degaussing

PC 230VAC PC

differance between the line

CC2 Connector CC1

162

161

2

120VAC

1

frequency and the vertical

INPUT

Degaussing Coil

sync frequency.

91