ONKYO TX-SR8450
Manual de Servicio

TX-SR504/504E/8450 IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-21
Q5501 : R2S15211FP (8 ch Electronic Volume and 11 Input Selector and Tone Control)-2/3
BLOCK DIAGRAM AND PIN CONFIGURATION
1

I/F

40

39

38

37 36

35

34

33

32

31

30

29

28

27

26

25

INLB/RECL2 SUB SUBL

AVCC

DATA 42 CLOCK 43 AVEE 44 INR1 45 INL1 46 INR2 47 INL2

MCU

INR10/RECR4

DGND 41

24 AVCC
INL10/RECL4 ADCR

23 TREL
ATT INR11/RECR5 ADCL

22 BASSL2
0/-6/-12/-18dB INL11/RECL5 FRIN2 Bass/ Treble

MAIN INRB/RECR2 MONO

21 BASSL1
+16~0dB (1dBstep)

RECR3 FLIN2

0~-95dB, -14~+14dB (1dBstep) (2dB step)

20 FRC 19 FROUT 18 AGND

RECL3 SRIN2

Tone
FLIN1 SLIN2

FRIN1 SWIN2

48

Tone
CIN1 CIN2
0~-95dB (1dBstep) Bass/ Treble -14~+14dB +16~0dB (2dB step) (1dBstep)

17 FLOUT 16 FLC 15 6-C

INR3 49 INL3 50 INR4 51 INL4 52 INR5 53 INL5 54 INR6 55 INL6 56 INR7 57 INL7 58 INR8 59 INL8 60 INRA/RECR1 61
REC

SBRIN2 SBLIN2 SLIN1
+16~-95dB (1dBstep)

14 6-OUT (SR OUT) 13 AGND
SBLIN1 BASSR

BASSR

+16~-95dB (1dBstep) +16~-95dB (1dBstep)

SRIN1 TRER

12 5-OUT (SL OUT) 11 5-C 10 4-C

+16~-95dB (1dBstep)

2

9 4-OUT (SW OUT) 8 AGND

+16~-95dB (1dBstep)

7 3-OUT (C OUT) 6 3-C

+16~-95dB (1dBstep)

5 2-C 4 2-OUT (SBR OUT) 3 AGND 2 1-OUT (SBL OUT) 1 1-C

INLA/RECL1 62 INR9 63 INL9 64

65

66

67
SUBR

68

69

70

71

72

73

74

75

76
SWIN1

77

78

79

80
SBRIN1