TECHNICS SA-EH760 Service Manual

: SOURCE SIGNAL LINE

SCHEMATIC DIAGRAM- 1

A OPERATION CIRCUIT

NOTE:

The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"

indicates the schematic diagram serial number located on the left corner in the schematic diagram.

			FL901 (RSL0298- F)
R997	150		FL DISPLAY

		R996		1	2
		150
D973	MA4030MTA		C920	50V4.7
			C928	50V4.7
C921	1000P	C922	35V33

V

E

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

C919

50V4.7

Y X W V U T S R Q P O N M L L J I H G F E D

C B A A B C D F G H I J K L M N O P Q R

R925

R901

R902

R903

R904

R905

R906

R907

R908

1K

820

1K

1.2K

1.5K

1.8K

2.2K

3.3K

4.7K

C908

470P

R922 10K

S901 (

S902 (MODE)

S903 (CLOCK/TIMER, DEMO)-

S904

(

S905 AUTO/(FMMONO)

S906 (TUNINGMODE)

S907 (SET)

S908 SELECTOR)(INPUT

S909 DISCRETE(6CH INPUT)

)

REC)

/

/

PLAY

53 54

C927

50V4.7

JK903 HEADPHONES

	R924		R913	R914	R915
U	1K		820	1K	1.2K
C907 470P	R921 10K	S914 (PS)	S915 (PTY)

R950

100 T

R944

2.2K

R949

4.7K

(RDS DISP MODE)

0V	R964
-6.1V	120

Q912

S	C924 0.1	C904
D974 MA165TA			0.01	R963
				-6.1V 120
				Q911

							0V
8				R511		R509	Q911,912
7
				47		47
3						S	2SD2144STA
4		C395	0.047	C509	0.01		MUTING
2
5
1				R512		R510
W905				47		47
C923	0.1	C396	0.047	C510	0.01	T
						M

R916	R909		R910	R911	R912
1.5K	1.8K		2.2K	3.3K	4.7K
	S910 (TUNING,		S911 (TUNING,)	S912 (TUNER/BAND)	S913 (DIGITAL S.WOOFER)
	)
R968					R966	R965
1M					3.9K	3.9K
	D961 MA4075MTA		R975 150K	C931 16V10
					R967
-6.2V	0.1V				2.2K
10K	C961	16V10
Q961
UN4115TA
MUTING CONT.

SCHEMATIC DIAGRAM- 2

: POSITIVE VOLTAGE LINE

: NEGATIVE VOLTAGE LINE

A

B

-27.6V

C

Q901

A

B C D E

F G H

I

J

K

L M N O P Q R

S

T

U V

UN4212TA

RESET

5.2V

-17.3V

-12.5V

-17.3V -22V

5.2V

-12.7V

-26.8V

-26.8V

-17.6V

-17.3V

-17.3V

-17.3V

-17.3V

-17.3V

-17.3V

-17.3V

-17.3V

-17.3V

22K

C914

50V2.2

50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31

0V

22K

MA165TA

P10

P9

P8 P7

DDV 3

P6

P5

P4

P3

P2

P1

NC NC 1G

2G

3G

4G

5G

6G

7G

D904

R976 100K

5.1V

-27.6V 51

- VP

4V

NC 30

5.2V

A

-26.9V 52

P11

0V

REMOCON 29

A

B

-21.8V 53

P12

-25V

RDS DATA 28

2.6V

B

C

-21.7V

54

P13

IC901

T

3.1ms.

RDS CLK 27

2.5V

C

0.5V

D

-11.8V 55

P14

LC8A524A5N28

HP SW 26

D

E

-16.8V 56

P15

SYSTEM CONTROL/

4.4V MIC DET 25

5.2V

F

-17.1V 57

P16

FL DRIVE

P-P

VR JOGA 24

5.2V

E

G

-21.7V 58

P17

4V

F=6MHz

VR JOGB 23

5.2V

F

H

-21.7V 59

P18

0V

3.4V

NC(GND) 22

-25V

1.3V

I

-12V

60

P19

T

3.1ms.

P-P

SH REQ 21

J

J

-12.6V 61

P20

F=6MHz

KEY KARAOKE 20

5.2V

K

-7.6V 62

P21

KEY TU 19

5.2V

L

-16.8V

63

P22

5.2V

VDD1 18

5.2V

M

-9.6V 64

P23

XC OUT 17

2.5V

R953

100

C925

1000P

P-P

N

-6.8V 65

P24

XC IN 16

2.2V

O

-18V 66

P25

F=32.7kHz

VSS 15

2.7V

P

-18V 67

P26

1.8V

X OUT 14

C915

Q

-18V 68

P27

5V

X IN 13

1.7V

0.01

P-P

R

-11.4V 69

P28

RESET 12

5.1V

R956

R957

S

-11.4V 70

P29

0V

F=32.7kHz

AC IN

11

2V

1K

1K

H

T

-12.2V

71

P30

T

16ms.

SEL/ TUNER 10

0V

5.2V 72

VDD4

5V

SEL TUNER

9

5.2V

R938

1K

R

U

-18V 73

P31

5V ST/ AV6CH

8

5.1V

V

-12.4V 74

P32

0V

RL2

7

R941

1K

F

W

-9.6V 75

P33

2V/2ms.DIV.

0V

RL1

6

5.1V

R942

1K

G

X

-4.8V

76

P34

2V/2ms.DIV.

LC72 CK

5

5.2V

R929

1K

A

Y

-11.7V 77

P35

5V

LC72 DO/ST

4

5.1V

R930

1K

B

D934MA165TA

D933MA165TA

R990100K

1.5V 78

REGIN0

LC72 CE

3

0V

1SS291TA

R932

1K

D

0V 79

81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

0V

3

REGIN1

T 10ms.

0V

LC72 DI

2

R931

1K

C

0V 80

STANDBY

LED S.W

LOUNGE CHORUS

MUTE

POWER

/ECO

MUTE2

SS 2 V

DD 2 V

NC

NC RL4 CS SH

DO SH

DI SH

CK SH

DET E

TIMER CR

CHECK

1

2.6V

X901

2

TIMER

SD

(6MHz)

1

R993

100K

0V

0V

0V

5.1V

5.1V

0V

5.2V

1.2V

3.8V

3.8V

4.4V

5.2V

5.2V

5.2V

T P

D905

100K

330K

20P

R954

R951

(32.7kHz)

C910

C905

1000P

C901

6.3V100

R926

C912

0.1

R952

10M

X902

2.2K

A B C

C911

MA165TA

1 H

18P

R937 10K

100

100

1K

1K

D903

R955

820K

10K

47K

D915

R935

R934

R988

R987

C913

16V10

R918

R928

L902

1SS291TA

1.5K

1K

47

470

2.7K

R936

100

R991

C926

1000P

L901

H10

R919

15K

R960

R958

R959

R933

R969

47K

D902

D901

1SS291TA

1SS291TA

6.3V100

5.2V

6.2V

10V1000

C916

C903

0.01

C902

D306

R939

SELS5223C

D906 MA165TA

(

)

A

1.5K

D954

R986

SELS5923C

( PLAY/

REC)

B

1.5K

L

O P

U

K

I

N

E

Q

D951

LNJ301MPUJAD

R995

(DIGITAL

S.WOOFER)

220

C

SCHEMATIC DIAGRAM- 3

A OPERATION CIRCUIT

: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE	: SOURCE SIGNAL LINE

A B C

C151

R158

16V10

2.5V

1

VREF

STDBY 20

IC151

R155

1K

120

LC72721NMTLM

C152

RDS SIGNAL

MA4051MTA

330P

2.5V

2

MPX IN

T3 19

DEMODULATOR

L153

1 H

L151

(TRI-AMPLIFIER)

100

H

5.1V

3

VDD

IDR 18

D956 SELS5923C

560P 6.3V47

C154 C158

R151

D

2.4V

1K

4

VSS

RDCL 17

C

R152

MA165TA

2.5V

3V

1K

5

FL OUT

RDDA 16

B

2.5V

R154

100K

R153

100K

D151

D907

R984

220

6

C IN

RDSID 15

W902B

15

7

T4 14

14

T1

13

L152

A

12

5.1V

100

H

B

11

8

T2

VDD 13

C155

1000P

C153

1000P

C160

1000P

C159

6.3V47

C

10

D

9

5.2V

9

PCL

VSS

12

E

8

F

7

G

6

2.6V

2.5V

H

5

10 X OUT

X IN 11

I

4

J

3

K

2

X151

L

1

C157

47P

C156

47P

7.2V

- 27.6V

M

W901B

5.1V

15

N

14

O

13

P

12

Q

11

10

9

8

7

E

F

A

6

5

R

4

VR901

S

3

EVQVBXFK124B

2

(VOLUME)

T

1

Z901

RCDGP1U28XD

R946

(REMOTE SENSOR)

Q902

R945

100

R943

100

1K

1

UN411FTA

COM B

A

MUTING CONT.

C909

1000P

1

2

3

U

0V

0V

2

3

10K

4.7K

R962

22K

R961

22K

R923

22K

C917

0.01

C918

6.3V100