Yamaha RX-V795a manuals

Yamaha RX-V795a Service Manual (70 pages)

Brand: Yamaha | Category: AV receivers | Size: 5.50 MB |

English

Table of contents

AV RECEIVER

1

■ TO SERVICE PERSONNEL

2

■ REMOTE CONTROL PANELS

2

■ FRONT PANELS

3

■ REAR PANELS

4

▼RX-V795aRDS B model

5

▼RX-V795aRDS G model

5

▼RX-V795a L model

5

■ SPECIFICATIONS

6

DIMENSIONS

7

■ INTERNAL VIEW

8

■ DISASSEMBLY PROCEDURES

8

!1!2!3!4!5!6!7!8!9

8

■ SELF DIAGNOSIS FUNCTION

9

DIAGNOSTIC MENU

10

CHK SUM:XXXX X

11

I PROTECTION

11

PS PRT : XX%

11

DC PRT : XX%

11

TMP PRT : XX%

11

(4) Diagnosis default status

12

2. YSS918-SRAM

14

2. YSS918

14

2. DSP FULL BIT

14

(2) DSP THROUGH

14

(3) AC3/DTS THROUGH

15

3. ST:10001001

15

(4) PRO LOGIC

15

4. PRO CNTR:LRG

15

4. PRO EFECT:OFF

15

(5) SPEAKERS SET

16

7.TEST LFE

17

(9) AD DATA CHECK

18

(10) STATUS FROM DSP MICOM

19

■ FACTORY PRESET

21

■ AMP ADJUSTMENTS

22

■ TUNER ADJUSTMENTS

23

FM Adjustment

24

RX-V795a/RDS/HTR-5170

25

1) Adjustment of sensitivity

26

■ DISPLAY DATA (V2573800)

27

■ IC DATA

28

IC4 : YSS918-F

29

Digital Pro-Logic Decoder

29

IC14 : LC87F5164A

32

IC406 : LC74781-9626

34

Superimpose

34

IC102 : LC75712E

36

Display Driver

36

IC21 : HD6433397A97F

37

Main Micro Processor

37

■ PIN CONNECTION DIAGRAM

39

■BLOCK DIAGRAM

40

■ BLOCK DIAGRAM

41

BLOCK DIAGRAM

41

■ SCHEMATIC DIAGRAM (DSP)

42

PHONO MM EQ AMP

43

INPUT SELECTOR

43

TAPE MONITOR

43

INPUT & VIDEO

44

FULL MUTE DRIVE

45

DISPLAY DRIVE

45

SYSTEM CONTROL

45

SPEAKER SETTING CONTROL

46

SPEAKER LEVEL CONTROL

46

MOTOR DRIVE

46

VOLUME AMP

46

DIGITAL SELECTOR

46

■ SCHEMATIC DIAGRAM (MAIN)

47

■ SCHEMATIC DIAGRAM (TUNER)

49

PARTS LIST

51

P.C.B. DSP

52

P.C.B. DSP & VIDEO

53

P.C.B. VIDEO

54

P.C.B. VIDEO & OPERATION

55

P.C.B. OPERATION

56

P.C.B. OPERATION & INPUT

57

P.C.B. INPUT & MAIN

58

P.C.B. MAIN

59

P.C.B. MAIN & TUNER

61

P.C.B. TUNER & TUNER/SMD

62

■ Chip Resistor

63

■ EXPLODED VIEW

64

■ MECHANICAL PARTS

65

REMOTE CONTROL TRANSMITTER

68

RX-V795a/RDS

70

HTR-5170

70

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