• Waveforms

 

– DISPLAY Board –

– DIGITAL Board –

– OSD Board – (DE945)

1 IC1401 <z// (CLK0)

1 IC2004 qg (EXD)

1 IC102 id (XI)

• IC Block Diagrams

IC103 ML9261MBZ060 (DISPLAY Board)

HVO25

1

70

HVO26

HVO24

2

69

HVO27

HVO23

3

68

HVO28

HVO22

4

67

HVO29

HVO21

5

66

HVO30

HVO20

6

65

HVO31

IC105

BA6208F-E2 (DISPLAY Board)

B IN

5

SWITCH

MOTOR

4

A OUT

DRIVE

NC

6

 

3

GND

 

MOTOR

GND

7

SWITCH

2

B OUT

DRIVE

A IN

8

 

1

VCC

 

 

 

 

 

REG

 

 

4 Vp-p

10 MHz

6.2 MHz

2 IC1201 od (X1)

2 IC2001 9

5.6 Vp-p

16 MHz

14 MHz

5.4 Vp-p

16 MHz

2IC12 qh (X OUT)

4.8 Vp-p

7.28 MHz

4.8 Vp-p

HVO19

7

 

 

64

HVO32

 

HVO18

8

 

 

63

HVO33

 

HVO17

9

 

 

62

HVO34

 

HVO16 10

 

 

61

HVO35

 

HVO15 11

 

 

60

HVO36

 

HVO14 12

 

 

59

HVO37

 

HVO13 13

 

OUTPUT

58

HVO38

 

HVO12 14

 

57

HVO39

 

 

CIRCUIT

 

HVO11 15

 

 

56

HVO40

 

HVO10 16

 

 

55

HVO41

 

HVO9 17

 

 

54

HVO42

 

HVO8 18

 

 

53

HVO43

 

HVO7 19

C

 

52

HVO44

 

HVO6 20

60BIT

51

HVO45

 

HVO5 21

R

REGISTER

50

HVO46

 

HVO4 22

 

 

49

HVO47

 

HVO3 23

RESET

 

48

HVO48

 

HVO2 24

 

47

HVO49

 

 

 

 

HVO1 25

SI

 

46

HVO50

4.7 Vp-p

VDISP 26

60BIT

45

HVO51

C

 

VDD 27

SHIFT SO

44

HVO52

 

DIN 28

R

REGISTER

43

HVO53

 

DOUT 29

 

42

HVO54

 

 

 

 

CLK 30

 

 

41

HVO55

 

LS 31

 

 

40

HVO56

 

CL 32

 

 

39

HVO57

 

CHG 33

 

 

38

HVO58

 

L-GND 34

 

 

37

HVO59

 

D-GND 35

 

 

36

HVO60

IC106 NJU3719L (DISPLAY Board)

P11

1

PARALLEL

30

VDD

DATA

P12

2

OUTPUT BUFFER

29

P10

P13

3

 

28

P9

P14

4

LATCH

27

P8

P15

5

26

P7

CIRCUIT

P16

6

25

P6

 

P17

7

 

24

P5

VSS

8

SHIFT

23

P4

P18

9

22

P3

REGISTER

P19

10

 

21

P2

P20

11

 

20

P1

P21

12

CONTROL

19

CLR

P22

13

CIRCUIT

18

STB

P23

14

 

17

CLK

P24

15

 

16

DATA

IC201

 

NJM2296D (VIDEO Board (DE845))

IC251, 252 NJM2296D (S-VIDEO Board (US, Canadian))

IC2005

 

NJM2296D (OSD Board (DE945))

V+

Vout2

SW1

Vin1

GND

Vout3

SW2

Vin2

16

15

14

13

12

11

10

9

S6

 

 

 

S7

 

 

 

 

 

 

S1

 

 

S2

 

 

 

 

S4

 

 

 

S5

 

S3

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

Vout1

SW5

Vin5

SW3

Vin4

SW4

Vin3

V-

IC253 NJM2145D (S-VIDEO Board (US, Canadian))

VCC

1

 

16

GND

OUT1

2

 

15

INH1

 

 

INH

 

 

IN4

3

 

14

INH2

 

 

INPUT

 

 

13

IN1

IN3

4

CIRCUIT

 

 

IN2

5

INH

12

NC

 

 

 

 

 

OUTPUT

11

OUT2-1

 

 

 

 

 

 

CIRCUIT

 

 

OUT3-1

6

 

10

OUT2-2

 

 

OUTPUT

 

 

 

 

 

 

CIRCUIT

 

 

OUT3-2

7

 

9

OUT2-3

 

 

OUTPUT

 

 

 

 

 

 

CIRCUIT

 

 

OUT3-3

8

 

 

 

42 42

Page 42
Image 42
Sony STR-DE845 service manual Waveforms Display Board Digital Board OSD Board DE945

STR-DE845 specifications

The Sony STR-DE845 is a vintage yet impressive 5.1-channel surround sound receiver that has captivated audio enthusiasts since its release. As part of Sony's esteemed line of home audio equipment, this model exemplifies a combination of classic design, robust build quality, and advanced features that enhance the listening experience.

One of the standout features of the STR-DE845 is its power output, capable of delivering 100 watts per channel at 8 ohms. This ample power ensures that your audio experience remains vibrant and dynamic, whether you’re enjoying music or watching movies. The receiver supports a range of speaker configurations, making it versatile enough to accommodate various home theater setups.

Another key characteristic of the STR-DE845 is its compatibility with Dolby Pro Logic and DTS surround sound formats. These technologies bring a cinematic experience into the home, allowing sound to envelop listeners from all directions. The receiver's ability to decode these formats enhances the clarity and immersion of soundtracks, providing an impressive auditory experience.

The STR-DE845 boasts a wide array of connectivity options, including multiple analog and digital inputs, which allow you to connect various audio sources such as CD players, VCRs, and gaming consoles. The inclusion of an AM/FM tuner also opens up the possibility for listening to local radio stations. For convenience, the receiver includes a remote control, enabling users to adjust settings and change inputs from a distance.

In terms of audio processing, the STR-DE845 features Advanced Digital Sound Field Processing (DSFP), which allows users to customize their listening experience based on room acoustics and personal preferences. This technology helps replicate the ambiance of live music venues and movie theaters, delivering an optimized sound experience regardless of the room's characteristics.

The design of the STR-DE845 is another highlight. With a sleek black finish and intuitive layout, this receiver fits seamlessly into any home entertainment setup. The front panel features a clear display, and the user-friendly interface makes navigating settings and configurations straightforward.

Moreover, the receiver's durability is noteworthy. Built with quality components, the STR-DE845 is designed to withstand the test of time, making it a dependable option for audiophiles and casual listeners alike.

In conclusion, the Sony STR-DE845 is a feature-packed surround sound receiver that combines quality, functionality, and a user-friendly experience. With its powerful output, advanced surround sound technologies, and versatility in connectivity, it remains a respectable choice for those looking to elevate their audio and home theater systems.