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4

5

2

3

1

C

B

A

SCHEMATIC DIAGRAM

AG-790

MAIN PCB (2/2), HEADPHONE PCB, SP SEL PCB, SP JACK PCB, POWER PCB

7C31

10P

7C30

10P

S2

7R78
10/2W

7R77
10/2W

7V25
5401

S1

POW

E

R SW

C1

103/

250V

FU2

6.3A/250V

1C15

6800U

/70V

1R3

15K

1C14

6800U

/70V

1R2
15K

1D10
1N5404

1D11
1N5404

1D12
1N5404

1D9
1N5404

7C22
104

7C28

47U

/63V

1D

15

4004

1D18

4004

1D14
4148

7R69
10K

7R70

100

7R73
47K

7R74

47K

1C13
10U/63V

1R5

22K

7C27

220U/16V

7C26

220U/16V

1D

13

4148

7R72
10K

7C25
4U7/63V

7C23
102

7R63
56K

7R59

22K

7V29
8050D

7V28
8050D

7V27
8050D

7V26
8050D

7C21

104

7R62

5.1/

2W

7R60

22K

7R61

5.1/

2W

7R71

10K

7C17
47U/25V

7R51
1K

7R15
22K

7R19
100

7R17
100

7V1
5551

7R1
1K

7C1

4U

7/

50V

7R5
3K3

7R7
3K3

7R25
3K3/0.5W

7R29
220

7C5

47U

/6

3V

7V3

5551

7R9
100

7R11
100

7R13
22K

7V9
5401

7V15
669A

7V19
5200

7V21
1943

7V17
649A

7V13
5551

7V11
5551

7V5
5401

7V7

5401

7C9
104

7C13
30P

7R31
3K3

7R33
1K5

7VR1
300

7C15
30P

7R35

220

7R21
3K3

7R23
3K3

7C7
47U/63V

7C11
104

7R27

3K

3/

0.5W

7R49
33K

7R37
220

7R39

33

7R43

0.33/

5

W

7R45

0.33/

5W

7R47
100

7R41
100

7V23
5551

7R53

3K3

7R55

27K

7C19
4U7/50V

7L1
1.5uH

7L2
1.5uH

7C20
4U7/50V

7R56

27K

7R54

3K3

7V24
5551

7R42
100

7R48
100

7R46

0.33/

5W

7R44

0.33/

5W

7R40

33

7R38
220

7R50
33K

7R28

3K

3/

0.5W

7C12

104

7C8
47U/63V

7R24
3K3

7R22
3K3

7R36

220

7C16
30P

7VR2
300

7R34
1K5

7R32
3K3

7C14
30P

7C10

104

7V8
5401

7V6
5401

7V12
5551

7V14
5551

7V18
649A

7V22
1943

7V20
5200

7V16
669A

7V10
5401

7R14
22K

7R12
100

7R10
100

7V4

5551

7C6

47U

/63V

7R30
220

7R26
3K3/0.5W

7R8
3K3

7R6
3K3

7C2

4U

7/

50V

7R2
1K

7V2
5551

7R18
100

7R20
100

7R16
22K

7R52
1K

7C18
47U/25V

7R4

33K

7C4

100P

7C3

100P

7R3

33K

7C24

10U

/63V

7R67
2K7

7R68

3K

3/

1W

7R64

510K

7D8
4148

7R65
220K

7R66

4K7

1X

S1

1X

S2

1D3
1N4004

1D4
1N4004

1D2
1N4004

1D1
1N4004

1C1

100U

/35V

1R1
100

1X

S3

1D5
1N4004

1D8
1N4004

1D6
1N4004

1D7
1N4004

1C4

2200U

/25V

1C5

2200U

/25V

1N3

78M05

1N1

7812

1N2

7912

1C10

1000U

/1

6V

1C11

1000U

/16V

1C3

470U

/16V

1D

16

4004

1D

17

4004

1R4

2K

2

1C12

100U

/25V

RELD

1FU1

6.3A/250V

1FU2

6.3A/250V

7D7
30V

7D1
24V

7D

3

24V

7D2
24V

7D

4

24V

7D10

12V

7R57

18K

7D5
4148

7D6
4148

7R58
18K

1
2

1XP12

1
2

1XP13

+12

-12V

AC 120V/230V

SEL.SW

VOLTAGE

+5V

G

1
2
3

1XP7

1
2
3

1XS7

SW

B

SW

A

RELA

RELB

1

8

7

3

2

4

5

7K1

7R75 680

7R76

680

1X1
Speakers out

7C29

103

RELC

ON

OFF

ON

OFF

7D11
4148

7D12

4148

R

L

G

L

R

1

2

3

4

1XS8

B

C

A

V

1

2

3

4

1XP8

V

A

C

B

OFF

OFF

OFF

ON

ON

ON

R

L

G

1

2

3

4

5

6

7

1XS9

1

2

3

4

5

6

7

1XP9

AL

+

AR+

BL

+

BR+

AL

-

AR-

G

AL

+

BL

+

AR+

BR+

AL

-

BL

-

AR-

BR-

AL

+

AR+

BL

+

BR+

AL

-

AR-

G

L

R

R

L

L1-1

L1-2

C3
103/250V

C2
103/250V

AC  JACK  OUT

FU

3

3

.15A

/250V

1N4

7809

+9

+12V

G

1

2

3

4

5

6

7

1XS4

PO

W

2.

1V

-2

4

V

0V

2.

1V

DG

ND

+5V

1D

19

1N

4148

1D

20

1N

4148

1D

22

1N

4148

1D

21

1N

4148

1C18

100U

/1

6V

1C19

220U

/1

6V

1FU3 2A/250V

1FU4 2A/250V

R

L

FU1

2.5A/250V

1D23
24V/1W

R-

1

L-

1

1 st Issue; March 2003

AM/FM Stereo Receiver

A

AG

G--779

90

0

Summary of Contents for AG-790

Page 1: ...ws are not supplied As regards the resistors and capacitors refer to the circuit diagrams contained in this manual Parts marked with this sign are safety critical components They must be replaced with...

Page 2: ...ponse 30 Hz 15 kHz 2 3 dB Stereo Separation 1 kHz 35 dB Signal to Noise Ratio Mono 57 dB Stereo 55 dB AM Tuner Section Tuning Range 530 kHz 1 720 kHz 10 kHz steps Usable Sensitivity 55 dB m Total Harm...

Page 3: ...switch to CD 2 Set 7VR1 and 7VR2 to the center position 3 Connect the DC voltmeter as shown below after preheating for 10 minutes and adjust 7VR2 Lch so that the voltage becomes 3 3 1 3mV 4 Adjust 7VR...

Page 4: ...OUT FM 90 MHz 2L2 4 5T Max 5 FM Distortion 98 MHz 60 dBf 1 kHz 100 Mod REC OUT FM 98 MHz 2T4 PINK Min distortion 6 FM Stereo 98 MHz 60 dBf Stereo signal L R REC OUT FM 98 MHz 2T5 2T6 Min distortion 1...

Page 5: ...ltmeter FM Signal Generator Stereo Signal Generator Distortion Analyzer D E G F AC Voltmeter AM Signal Generator B C AM Loop Antenna 60cm 2T3 2T6 2T5 2T2 2T1 2T4 2L2 2L3 2TC2 2R19 2J2 TUNER PCB DC Vol...

Page 6: ...3 EXPLODED VIEWS AND PARTS LIST 6...

Page 7: ...ASSY 037900206 19 9A09756560 POWER PCB ASSY 037900505 21 9A09760500 BOTTOM COVER 520505200 22 9A09759500 POWER TRANSFORMER 159642022 23 9A09760900 HEAT SINK 560502200 24 9A06901200 H S BRACKET 540082...

Page 8: ...8 4 PC BOARDS AND PARTS LIST MAIN PCB...

Page 9: ...9 SP JACK PCB SP SEL PCB HEADPHONE PCB POWER PCB FRONT PCB TUNER PCB...

Page 10: ...649A 7V19 20 9A09754000 TR 2SC5200 O 7V21 22 9A09754100 TR 2SA1943 O 7V23 24 9A09589700 TR 2N5551 7V25 9A09589800 TR 2N5401 7V26 29 9A09590100 TR 2SC8050D 7VR1 2 9A09585700 VR SEMI FIXED 300 J RELA D...

Page 11: ...660 SP SEL PCB ASSY 9A09758700 SP SEL PCB SWA B 9A09758800 SP SELECTOR SW SP JACK PCB ASSY REF NO PARTS NO DESCRIPTION 9A09759060 SP JACK PCB ASSY 9A09759100 SP JACK PCB 9A09759200 SP JACK POWER PCB A...

Page 12: ...L REC L AUX L AUX R TAPE L REC R TAPE R 4R1 470 4R2 470 4R5 22K 4R6 22K 4C1 471 4C2 471 4C3 181 4C4 181 4C5 181 4C6 181 4C9 102 4C10 102 4C13 223 4C14 223 4C11 562 4C12 562 4R9 12K 4R10 12K 4R7 270 4...

Page 13: ...3 7C14 30P 7C10 104 7V8 5401 7V6 5401 7V12 5551 7V14 5551 7V18 649A 7V22 1943 7V20 5200 7V16 669A 7V10 5401 7R14 22K 7R12 100 7R10 100 7V4 5551 7C6 47U 63V 7R30 220 7R26 3K3 0 5W 7R8 3K3 7R6 3K3 7C2 4...

Page 14: ...102 2C21 102 2R15 300K 2R14 2K 2R9 100K 2C10 501 2C15 203 2C9 20 2R10 8K2 2R6 100K 2C13 203 2C4 7 2C6 152 2R3 3K3 2R5 3K3 2C12 203 2C8 152 2C25 104 2R4 100 2R8 100K 2C14 203 2R7 100K 2C7 152 2R16 22K...

Page 15: ...N4148 8D6 1N4148 8D7 1N4148 8R21 10K 8R22 10K 5V POW DGND 0V 8R1 10K 8C2 100U 25V 8C3 100U 35V 8D2 1N4148 8C1 470U 16V 8R26 10K 8R25 10K 8R24 10K 8R23 10K V F D 8C6 104 S13 S14 S15 S16 1 2 3 4 5 6 7 8...

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