Yamaha RX-V1500 Service Manual page 78

A B C
RX-V1500/DSP-AX1500
SCHEMATIC DIAGRAM (DSP 2/2)
1
Page 80 M6 Page 80 E1
to FUNCTION to FUNCTION
2
ANALOG IN
3
DRAM
4
5
0
DSP
DIGITAL IN
3.4
4.9
3.2
2.8
3.4
4.9
1.7
6
1.7
1.7
0.1
0
0
0.1
0.7
0.1
1.6
2.6
7
8
9
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
10
78
D E F
IC533
NJM78L05UA 5.0
OUT IN
2.5
1.7 COM
0 5.0
1.7 5.0
1.7 5.0
2.5
1.7 0
3.4 2.5
5.0 2.5
2.5
5.0
2.5
0
2.5
A/D CONVERTER
2.6 0
0.5
0.5
0.9
1.0
0.9
0.9
AUTO CALIBRATION
0.6
3.4
0.6
0.6 4.9
0.6 3.2
3.4 0
3.4
4.9
1.7
1.7
0.1 0.1
0.5 0.5
0.5 0.5
0.5 0.5
1.7 1.7
0
0
0.5 0.5
1.7 1.7
0 2.6
R636
4.7K
R842
0 0
5.6K 3.4
2 1
5
R843
5.6K
3
0
0 4
Remarks
2400
x: NOT USED
O: USED / APPLICABLE
G H
11.5
4.7K D/A CONVERTER
0
0
0
1.7
1.7
1.4
1.7
0
0 3.4
0
4.9
4.7K
-11.9 3.4
2.8
0
SELECTOR
3.4
0.1
1.6
1.0
0
0
0
C812
0.1/16
C810
0.1/16
C813
0.1/16
C811
D/A CONVERTER
0.1/16
0 0
0 0
0.2
0.2
0.2
1.6
1.7
0
3.4
2.8
4.9
2.6
0
0
0
3.4
3.4
3.4
3.4
4.9
0.2
0.2
1.6
0.2
0.2
1.6
0
D/A CONVERTER
1.7
1.7
0.2
1.7
3.4
4.9
3.4
2.8
IC533: NJM78L05UA
Voltage Regulator
INPUT
OUTPUT
GND
I J K
11.5
390P
2 8
1.5 1
3 0
1.5
0 0 -11.6
-11.6
0 0
4.9
0
0
2.5
2.5
-11.6
2.5
2.5
5
1.5 7
0
6
4
1.5
390P
-11.9
3.4
0
0
11.5
0 390P
2 8
1.5 1
3 0
0
1.5
0 3.4 2.9 2.9
0
0.6
0 2.9 0
0
0 2.9
0
0.6
0
3.4 2.9 0
5
1.5 7
0
6
1.5 4
390P
-11.9
SURROUND BACK L
11.5
390P
2 8
0 1
3 0
0
3.4 2.9 2.9
0
0.6
0 2.9 0
0
0 2.9
0
0.6
0
0
2.5 3.4 2.9
5
2.5
1.5 7
0
2.4 6
4
1.5
2.4 390P
-11.9
2.4
2.4
2.4
2.4
2.4
CENTER
2.4 11.5
390P
2 8
2.4
1.5 1
2.4 3 0
-11.4 1.5
0 0
0
-11.3
0 0
0
0
0 0
0
-10.3
0 0
0
-11.4
5
1.5
7
6 0
1.5 4
390P
-11.9
11.5
2
8
1.5 1
3 0
1.5
3.4 2.9 2.9
0
0.6
0 2.9
0
0
0 2.9
0
0.6
0
3.4 2.9 2.9
5
1.5 7
6 0
1.5 4
-11.9
FRONT L
11.5
390P
2
8
1.9 1
3 0
1.9
3.4 2.9 2.9
0
0.6
0 2.9
0
4.9
0 0
2.5
2.5 0 2.9 0
0.6
2.5
0
2.5 3.4 2.9 0
5
1.9 7
6 0
1.9 4
390P
-11.9
IC532: SN74AHC1G08DCKR IC524: AK4358VQ
2-Input And Gate 192kHz 24Bit 8ch DAC
A 1 5 Vcc
DZF Audio
B 2 I/F
LOUT1+
2
SCF DAC DATT
LOUT1–
GND 3 4 Y 1
ROUT1+ 48
SCF DAC DATT
ROUT1– 47
LOUT2+
46
SCF DAC DATT PCM
LOUT2– 45
ROUT2+ Control
44
SCF DAC DATT
Register
ROUT2–
43
LOUT3+ 42
SCF DAC DATT
LOUT3– 41
ROUT3+
40
SCF DAC DATT
ROUT3– 39
LOUT4+ DSD
38
SCF DAC DATT
LOUT4–
37
ROUT4+ 33
SCF DAC DATT
ROUT4– 32
L M N
0
0
0
0
IC517: MSM514260E-60JS
4Mbit DRAM
WE OE
13 27
Timing
RAS 14
Generator
I/O
Controller
LCAS 29
Output
UCAS 28 8 8
I/O Buffers
Controller
Column
Input
9 Address 9 Column Decoders
8 8
Buffers
Buffers
I/O
Internal
Sense Amplifiers 16 16
Refresh Selector
A0~A8 Address
Control Clock
Counter
Input
8
8
Buffers
Row
Row
9 Address 9
Word Memory
Deco-
Buffers
Drivers Cells
ders
Output
8
8
Buffers
VCC 20
On Chip
VBB Generator
VSS 21
IC519: AK5380-VT
96kHz 24Bit 2ch ADC
VA AGND VD DGND MCLK
6 5 7 8 11
Clock
Divider
Decimation
AINL 10 LRCK
2
Filter
Decimation 12 SCLK
AINR 1
Filter
Serial I/O
9 SDTO
Voltage Interface
VCOM
4
Reference
16 13 14 15
TST PDN DIF TTL
IC520, 525~530: NJM2068MD
Dual OP-Amp.
OUT 1 1 8 +V CC
–IN 2 7 OUT
1 2
+ – + –
+IN 1 3 6 –IN 2
–V 4
CC 5 +IN 2
IC521, 523: AK4382AVT
D/A Converter
MCLK
1
14 VDD
De-emphasis Clock
13 VSS
Control Divider
CSN 6
µP 16 DZFL
CCLK 7
Interface
CDTI 8 15 DZFR
AOUTL+
8X 12
LRCK Audio Interpolator 11 AOUTL-
4
BICK 2 Data
SDTI 3 Interface
8X 10 AOUTR+
Interpolator
9 AOUTR-
5
PDN
IC522: 74VHC157MTCX
Quad 2-Input Multiplexer
1
S
10 MCLK
17 LRCK
E 15
9 BICK
SDTI1
14
I1d 10
9 Zd
15 SDTI2
I0d 11
16 SDTI3
13 SDTI4
I1c 13
12 Zc
3-wire I0c 14
or 12C
I1b 6
7 Zb
22 DCLK
25 DSDL1 I0b 5
26 DSDR1
I1a 3
4
27 DSDL2 Za
I0a 2
28 DSDR2
DSDL3
29
30 DSDR3
23 DSDL4
24 DSDR4
DQ1~
DQ8
DQ9~
DQ16