Yamaha RX-V800 Service Manual page 51

A B
SCHEMATIC DIAGRAM (DSP)
1
DSP
IC507, IC513: TC74HC00AF
IC510, IC511: TC74HCU04AF
Quad 2-Input Nand Gate
1A 1 14 Vcc
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
2Y 6 9 3A
2
GND 7 8 3Y
IC508: TC74VHCT08AF
Quad 2-Input And Gate
1A 1 14 Vcc
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
4.9
2Y 6 9 3A
0.5
GND 7 8 3Y
0.5
0.5
DIGITAL OUT INHIBIT 0.5
4.9
3
0
0
1.5
5.0
5.0 14
1.5
4 3.3
4 4.9 6
0 6 1.5
4.9
5 3.3
0
5 4.9
3.1
0
1.7
5.0
1.0
1
4.9
0 3 1 3.3
3 1.7
0 2 4.9
4.9 2 ~
3.3
7 ~
0
4.9
4.9
0
4.0
4 4.9
0
4.0
DUTY
4.9
0
CORRECTOR
4.0
4.9
0
8 4.9 14
4.0
11 12 3.6
4.9 3
1
4.9 4.9
0
2.6 13
3.6
2 17
0 4 0
5
5
0 9 0
7 8
0
4.9
0 10 0
6
LEVEL CONVERT & SIGNAL DETECT
DIGITAL IN
3.1 5.0
14
3 4 5 6 0 0
2.6 3.1 0.4 0
7
0
6
0
3.1
13 1 12 2 0 0
3.1 0.4
2.6 0
0
0
11 9 10 8
4.9 0
0
IC502: MSM514260C-60JS
4Mbit DRAM
7
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 Addess
Control Clock
Counter
Input
8 8
Buffers
Row
Row
9 Address 9
Word Memory
Deco-
Buffers Drivers
ders Cells
8
Output
8 8
Buffers
VCC
20
On Chip
VBB Generater
VSS 21
9
C D E
REGULATOR
2.5 4.9
3.3 4.9
3.3 4.9
0
1000/6.3
0
0.7
0.7
0.7
0.7
0
0
2.5
0.7
0.4
0.7
0
0.7
0.5
PHONO EQ
2.1
2.1
2.0
~
~
~
~
~
0
0
0
0
3.3
0
4.8
12
11 0
~
0 0
13 0
4.8
0
9
8
0 1
0 0
10 4.0
0
4.0
4.0
0
2.5
0 0
0
Point 1
Pin 1 of IC501
5.0
14
3 4 5.0 6
0
0
5
0
13 1 5.0 2
0
12 0
11 9
8
10
IC505: PQ025EZ5MZP IC514: AK4527VQ
Regulator 24bit CODEC
Vin 1 3 Vo
LIN+
30
LIN-
29
RIN+ 32
RIN- 31
2 Vc
5
GND
DQ1~DQ8 LPF
LOUT1 27
ROUT1 28 LPF
IC506: µPC29M33T-E1
Voltage Regulator
INPUT LPF
1 LOUT2 25
ROUT2 26 LPF
Safety Drive
Limiter
DQ9~DQ16 LOUT3 23 LPF
Amp.
ROUT3 LPF
3 OUTPUT 24
Excessive Electric
Current Protection
2 GND
F G
E-62/J-58
to FUNC (1)
D1
MAIN L
~ 3.3
0 4
3
14
~ 10
5 8
0.5 ~
1 6 ~
9
0.5 12 7
0 11 3.3
2
0.5 3.3
0 13
0
2.5
0 1000/6.3
0
3.3
3.3
3.3
0
0
0
0
0
3.3
~
~
~
0
0
1.6
1.6
1.6
0
0
0
2.5
0
0
0
1.6
1.6
1.6
~
~
~
~
0
0
IC515~519, IC522: µPC4570G2
Dual OP-Amp
OUT 1 8 +V
1 CC
–IN 2 7 OUT
1 2
+ – + –
+IN 3 6 –IN
1 2
–V 4 5 +IN
CC 2
Audio
IC520: AK4393-VF-E2
I/F
ADC HPF
D/A Converter
DIF0 DIF1 DIF2 DVDD DVSS DEM0 DEM1
ADC HPF 12 13 14 2 1 10 11
LRCK
7
Serial Input De-emphasis
DAC DATT MCLK BICK 5
39 MCLK Interface Control
SDATA 6
LRCK
6 LRCK
BICK 4 BICK
DAC DATT De-emphasis 8X
PD 4
Soft Mute Interpolator Modulator
10 DAUX
DAC DATT SMUTE
8
De-emphasis 8X
Format
Soft Mute Interpolator Modulator
Converter
DFS 9
DAC DATT
Control Register Clock DMder
6DOUT
1 SDOS
DAC DATT
25 3 26 27 28
9 SDTO
CS CCLK CDTI P/S MCLK CKS0 CKS1 CKS2
SDIN1 SDTI1
DAC DATT 6
SDIN2 SDTI2
7
SDIN3
8 SDTI3
H I
0 0
3.3 0
1.6 3.3 0
0 -11.3
3.3 3.3
1.6 0
~ 0
0
0
~ 0
0 0 0
0 0
3.3 0
0 0
0 5.0
3.0 0
0 0
D/A CONVERTER
IC509: NJM2904M
Dual OP-Amp
Q2 Q3
– Q1 Q4
INPUTS
+
Q8 Q9
5.0
5.0 5.0
2.5 2.5
5.0
CENTER
2.5 2.5
2.5
2.5
2.5 2.5 2.5
2.5 2.5
2.5
2.5
2.5
0
2.5
2.5
2.5
0 0
0
FRONT L
REAR L
0 0 0 -11.3
-11.3
0 0
0
0 -11.3
0 0
CODEC
-11.3
0 0 0
0 0 0 -11.3
0 0
0
0 0 0 -11.3
0 0
0
AVDD AVSS
18 19
BVSS
15
24 VCOM 0 0 0
-11.3
-11.3
AOUTL+
23 0 0
0
SCF
22 AOUTL-
AOUTR+
21
0 0 0 -11.3
SCF
20 AOUTR- -11.3
0 0
0
17 16
VREFH VREFL
# All voltage are measured with a 10MΩ /V DC electric 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.
J K L
RX-V800/RX-V800RDS/HTR-5280/DSP-AX8
11.9
8
0 6
7
5
0 0
0
-11.3
0
0
-11.3 0
0 3
1
0 2
0
4
-11.9
V–
Q6
Q5
Q7
OUTPUT
Q13
Q11
Q12
Q10
8 6
11.9
7 8 6
2.5 11.9
2.5 5 7
2.5
2.5 2.5 5
2.5
3
2.5
3 1
2.5
1 2.5 2
2 -11.9
2.5 2.5
-11.9 4
4 2.5
11.9
8
0 3
1
0
2
0
0
2.7K
0
470P
0
470P
2.7K
6
0
0 7
5
0
4
0
-11.9
3 8
1
2
2.7K
470P
470P
2.7K
6
7
5
4
11.9
0 3 8
1
0 2
0
0
2.7K
0
470P
0
470P
2.7K
6
0
7
0
5
0
4
0
-11.9
E-64/J-60