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4

5

2

3

1

C

B

A

SCHEMATIC DIAGRAM

AG-370

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

7C31

10P

7C30

10P

S2

7R78
10/2W

7R77
10/2W

1

2

1XS10

1

2

1XP10

1

2

3

1XP9

1

2

3

1XS9

1
2
3
4
5

1XP8

1
2
3
4
5

1XS8

1
2
3
4
5

1XP5

1

2

3

4

5

1XS5

1

2

3

1XS7

2S2
SPB

1X1
SPECKER

7V25
5401

S1

POWER SW

C1
103/250V

FU1
2.5A/250V

1C15

6800U/50V

1R3

15K

1C14

6800U/50V

1C16

104

1C17

104

1R2

15K

1D10
5404

1D11
5404

1D12
5404

1D9
5404

7C22
104

7C28

33U/50V

1D15

4004

1D18

4004

1D14
4148

7R69
10K

7R70

100

7R73
47K

7R74

47K

1C13
10U/50V

1R5

22K

7C27

220U/16V

7C26

220U/16V

1D13

4148

7R72
10K

7C25
4U7/50V

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
4U7/50V

7R5
3K3

7R7
3K3

7R25
3K3

7R29
220

7C5

47U/63V

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

3K3

7R49
33K

7R37
220

7R39

33

7R43

0.33/5W

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

3K3

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

7R8
3K3

7R6
3K3

7C2
4U7/50V

7R2
1K

7V2
5551

7R18
100

7R20
100

7R16
22K

7R52
1K

7C18
47U/25V

7R4
100K

7C4

100P

7C3

100P

7R3

100K

7C24

10U/50V

7R67
2K7

7R68

3K3/1W

7R64

220K

7D8
4148

7R65
220K

7R66

4K7

1XP15

1XP17

1D1
4004

1D2
4004

1D3
4004

1D4
4004

1C1

100U/35V

1C2
104

1R1
100

1XP16

1D5
4004

1D6
4004

1D7
4004

1D8
4004

1C4

2200U/25V

1C5

2200U/25V

1C6

104

1C7

104

1N3

78M05

1N1

7812

1N2

7912

1C8

104

1C9

104

1C10

1000U/16V

1C11

1000U/16V

1C3

470U/16V

1D16

4004

1D17

4004

1R4

2K2

1C12

100U/25V

REL1

1FU1
5A/250V

1FU2

5A/250V

1

8

7

3

2

4

5

7K1

7R75 330

7R76

330

1

2

3

1XS4

2S1
SPA

7D7
30V

7D1
24V

7D3

24V

7D2
24V

7D4

24V

7D10
12V

7R57

18K

7D5
4148

7D6
4148

7R58
18K

1

2

1XP12

1
2

1XP13

+12

-12V

7D11
4148

7D12
4148

7C29
103/50V

1D19

24V

1

2

3

4

5

6

1XS11

1C18

100U/35V

1R6

100

B/R-

B/L-
G
A/R-

A/L-

R

R

G

L

L

R R

G

L

AC 120V/230V

SEL.SW

VOLTAGE

DGND

SPA

SPB

-24V

0V AC

2.5V

2.5V

DGND

+5V

L

A/L-

A/R-

A/L+

A/R+

B/L+

B/L-

B/R+

B/R-

L

G

R

A/L-

A/R-

G

B/L-

B/R-

DG

SPB

SPB

DG

B/L-

G

B/R-

+5V
G

G

+12V

1 st Issue; January 2003

AM/FM Stereo Receiver

A

AG

G--3

3770

0

Summary of Contents for AG-370

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: ...Frequency Response 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 520 kHz 1 720 kHz 10 kHz steps Usable Sensitivity 55 d...

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 7VR1 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 1 2 3 4 5 6 7 8 9 q w e r t y u i o p a s d f g h j k l z x c v b n m...

Page 7: ...10 CONTROL PCB ASSY 033700201 22 9A06536400 LEG GOLD 540082601 23 9A06536300 LEG BLACK 540082600 24 9A09581600 BOTTOM COVER 520504800 25 9A06901000 SIDE BRACKET L 52W360300 26 9A09581800 SIDE BRACKET...

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

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

Page 10: ...TR 2SD1047E 7V21 22 9A09590300 TR 2SB817E 7V23 24 9A09589700 TR 2N5551 7V25 9A09589800 TR 2N5401 7V26 29 9A09590100 TR 2SC8050D 7VR1 2 9A09585700 VR SEMI FIXED 300 J REL1 9A09591100 RELAY 12V 5A CONT...

Page 11: ...810 HEADPHONE PCB ASSY 9A09625700 HEADPHONE PCB 9A06901600 H P JACK HOLDER 7D11 12 9A09589500 DIODE IN4148 7K1 9A06535000 HEAD PHONE JACK 7R75 76 9A06889700 R 1 2W 330 POWER SELECT SW PCB ASSY REF NO...

Page 12: ...471 3C6 471 3C9 22 3C10 22 3C7 471 3C8 471 3R8 1K 3R7 1K 3R6 3K9 3R5 3K9 3R4 3K9 3R3 3K9 3R2 3K9 3R1 3K9 4R14 1K 3C12 104 3C11 104 3V1 C1815 3V3 C1815 3V2 C1815 CD L PHONO CD R L REC L AUX L AUX R TAP...

Page 13: ...20 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 3K3 7C12 104 7C8 47U 63V 7R24 3K3 7R22 3K3 7R36 220 7C16 30P 7VR2 300 7R34 1K5 7R32 3K...

Page 14: ...14 2K 2R9 100K 2C10 471 2C15 203 2C9 15 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 2C34 220U 10V 2C33 4U7 50...

Page 15: ...TUNER 7 CD 8 AUTO MEMORY DOWN UP 3 4 5 6 2 1 24V 5V 5V 1N4148 8C1 470U 16 8C3 100U 16 8D2 5 1V 8C2 104 8R2 10K 8C4 10uF 25 24V 1 2 3 1XP7 1 2 3 1XP6 1XP14 1 2 3 4 8C10 104 GND 8D3 8D4 8D5 8D6 8D7 8D8...

Page 16: ...471 3C6 471 3C9 22 3C10 22 3C7 471 3C8 471 3R8 1K 3R7 1K 3R6 3K9 3R5 3K9 3R4 3K9 3R3 3K9 3R2 3K9 3R1 3K9 4R14 1K 3C12 104 3C11 104 3V1 C1815 3V3 C1815 3V2 C1815 CD L PHONO CD R L REC L AUX L AUX R TAP...

Page 17: ...20 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 3K3 7C12 104 7C8 47U 63V 7R24 3K3 7R22 3K3 7R36 220 7C16 30P 7VR2 300 7R34 1K5 7R32 3K...

Page 18: ...14 2K 2R9 100K 2C10 471 2C15 203 2C9 15 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 2C34 220U 10V 2C33 4U7 50...

Page 19: ...TUNER 7 CD 8 AUTO MEMORY DOWN UP 3 4 5 6 2 1 24V 5V 5V 1N4148 8C1 470U 16 8C3 100U 16 8D2 5 1V 8C2 104 8R2 10K 8C4 10uF 25 24V 1 2 3 1XP7 1 2 3 1XP6 1XP14 1 2 3 4 8C10 104 GND 8D3 8D4 8D5 8D6 8D7 8D8...

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