Yamaha RX-SL80, Service Manual

Page: 59 / 82

A B C D E F G H
1
2
3
4
5
6
I J K L M N
7
8
9
10
59
RX-SL80
■
SCHEMATIC DIAGRAM (DIGITAL)
* All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
Page 61
to MAIN
L7
Page 63
to POWER(4)
F8 Page 63
to POWER(5)
D5 Page 60
to INPUT(1)
H1 Page 64
to POWER(12)
F3 Page 60
to INPUT(1)
E1 Page 62
to POWER(1)
D7
EVE
(POST PROCESSING DSP)
MICRO COMPUTER
4M SDRAM
1M SRAM
ADAM
(DECODE DSP)
DIR
Level Shift
5V 3.3V
SELECTOR
CODEC
CUI
x : NOT USED
O: USED / APPLICABLE
Page 58
to INPUT(2)
H2
REGULATOR
0
0
0
3.3
0.4
3.3
0
3.3
3.3
0
0
0
3.3
1.5
1.6
1.6
3.3
0
3.3
0
1.6 1.7
0
3.3 1.7 0.9 1.7 1.7
0.5
0 0 0 0
3.3
0
5.0 3.3 0.2 3.3
0 0
~
2.6
3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
0 0 0
0
5.0 5.0 5.0 5.0 5.0 3.3
~ ~ ~
3.3 3.3
5.0 5.0
3.3 3.3
0
0 0
0 0 0
5.0
5.0
5.0
5.2
0.1
0
0.1
5.2
1.4
0.1
3.0
1.2
5.2
5.2
0.1
0
0
0
5.0
0
0
0
0
0
0
0
0.1
0.1
0.1
0
5.0
0
5.0
5.0
5.0
5.0
5.0
0
0
5.0
0
0 0 0
5.0
5.0
0 0
5.0 0.1 5.1
0
5.0 5.1
0 0
5.1 5.0
0
4.9
0 0 0
4.6
0
5.1 5.0 2.5
0 0
4.4
0.6
0
0.7
0 0
5.0 5.0 5.0 5.0 0.2 5.0 5.0 5.0 5.0 2.3
0
2.5
5.0
5.0 5.0
0
0
5.0
0
1.7 5.0 5.0
~
5.0
3.0
0
0.1
0
3.3
1.5
1.7
0.1
0
0
0
3.3
0
1.7
1.7
0
1.7
1.7
0
11.9 5.0
0
0
11.9
11.9
-11.7
0
0
0
0
0
0
0
-11.7
0
0
0
11.9
0
0
0
-11.7
0
0
0
11.9 5.0
0
0
0
0
2.4 2.4
2.4
4.8
2.4
4.8
0
11.9
0
0
-11.7
0
0
0
5.0
5.0
5.2
0.1
0
0.1
5.2
0
0
0
0
0
1.7
0.1
0.1
1.5
0
0
2.4
2.4
0
2.4
2.4
2.4
2.4
2.4
2.4
0.1 4.8 4.8 4.8
0
3.3
0 0 0
2.4 2.4
0
3.3 3.3 5.0
0
1.7
0
4.8
4.8
2.4
5.0 2.2 2.2 2.2 2.2 5.0 2.3 2.5 2.6 2.3 3.0 1.8 1.0 1.7 1.7 1.6 5.0
0
2.2 2.2 2.2 2.2
0
2.2 2.2 2.0 2.2
2.2
2.1 2.2
~ ~ ~
1.6 1.7
0
2.5 1.6 1.7 1.7 1.6 3.3 1.7
~
1.0
~ ~
1.8 2.1 3.0 2.2 2.2 2.2 2.2 3.3 2.2 2.2 2.2
0
0
1.6
0
1.1 2.5 3.3 3.3 3.2 3.3
0
2.5
5.0
3.3
0
0.1
3.3
3.3
5.0
1.7
1.7
1.7
0.9
0
0
0
0.7
1.3
1.3
2.5
2.2
2.2
2.2
3.3
1.7
1.7
0
0
0
0.1
0.1
0.1
1.7
1.5
0
2.5
2.0
2.2
2.3
2.6
2.5
2.3
2.2
0.1
0.1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.1
0.1
0.1
0
0.1
5.0
5.0
3.2
0
0.2
0.2
0.2
3.2
0.2
3.1
0.1
0.1
0.1
0.1
0.1
3.3
3.3 3.3 1.2
1.2
0
3.0
0
1.2
3.1
0.2
3.2
0
3.3
0
0
0
0
1.2
1.2
3.3
0.1
0
3.3
3.3
3.3
1.2
1.2
0
0
3.3
0
3.3
3.3
1.2
1.2
0
0
0
3.3
3.3
3.3
0
0
0
1.2 1.2
0 0
1,2
0
0
3.3
0 0 0 0
0
1.2
0
0
1.6
0 0
1.2 1.2
0
0
1.7 0.9
1.7 1.7 1.6 3.3 1.7
0
1.2
0.1
1.2
1.2
0
3.2
0.2
0.2
0.2
1.2
1.2
0
0
3.3
0.3
1.2
1.2
0
0
3.3
0
0.7
0
0
1.3
1.3
1.7
1.7
1.2 1.2
0
0.1 0.1 0.1 0.1
0
0.2 0.2 3.3 0.1 0.1 0.1 0.1 1.2
0 0
0.2 0.2 0.2 1.2 1.2
0 0
3.3 0.2 0.2 1.2 1.2
0 0
0.2
0.2 0.1 0.1
2
1
3
0
2.4
2.6
0
2.4
2.4
5.0
0.1
0
5.0
5.0
5.0
5.0
0
5.0
0
2.0
5.0
0.2
0
1.3
0
SURROUND L CENTER
FRONT L
SURROUND L
CENTER
FRONT L
FRONT L
CENTER
SURROUND L
FRONT L
CENTER
SURROUND L
FRONT L
CENTER
SURROUND L
DIGITAL INPUT
DIGITAL INPUT
DIGITAL INPUT
IC303 : SN74LV245APWR
Octal 3-State Bus Transceivers
1 DIR
2 A1
3 A2
4
A3
5 A4
6 A5
7 A6
8 A7
9
A8
10 GND
20 V
CC
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
19 ENG
IC315–318 :
µ
PC4570G2
Dual OP-Amp
– +
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4 5
+IN
1
–IN
2
+IN
2
– +
6
7
8
IC300 : PQ012FZ01ZP
Regulator
DC INPUT (VIN) DC OUTPUT (VO)
ON/OFF CONTROL (VC)
GND
2
5
3 1
I C
G 4A 4B 4Y 3A 3B
1A 1B 1Y 2A 2B 2Y
3Y S
15
STROBE
2
1A
14
4A
13
4B
12
4Y
11
3A
10
3B
9
3Y
1
SELECT
3
1B
4
1Y
5
2A
6
2B
7
2Y
8
16
V
CC
GND
INPUTS OUTPUT OUTPUT INPUTS
INPUTS OUTPUT OUTPUT INPUTS
IC309 : 74VHC157MTCX
2 to 1 Data Selectors
INPUTS
X
L
H H
L
L
L
A
B
SELECT
STROBE
G
OUTPUT
Y
A1
B1
A2
V
DD
B4
1
2
3
4 11
Y1 A4
Y4
12
13
14
B2
Y2
B3
A3
5
6
7 V
SS
Y3 8
9
10
IC319 : SN74AHCT08PWR
Quad 2 Input AND
IC308 : MSM514260E-60J3R1
262,144 word x 16 bit Dynamic RAM
1
VCC
2
DQ1
3 DQ2
4 DQ3
5
DQ4
6
VCC
7
DQ5
8 DQ6
9 DQ7
10 DQ8
11
NC
12
NC
13 WE
14 RAS
15 NC
16
A0
17
A1
18 A2
19 A3
20 VCC
40
VSS
39
DQ16
38 DQ15
37 DQ14
36
DQ13
35
VSS
34
DQ12
33 DQ11
32 DQ10
31 DQ9
30
NC
29
LCAS
28 UCAS
27 OE
26 A8
25
A7
24
A6
23 A5
22 A4
21 VSS
TIMING
GENERATOR
I/O
CONTROLLER
I/O
CONTROLLER
COLUMN
DECODERS
SENSE
AMPLIFIERS
I/O
SELECTOR
OUTPUT
BUFFERS
OUTPUT
BUFFERS
INPUT
BUFFERS
INPUT
BUFFERS
MEMORY
CELLS
COLUMN
ADDRESS
BUFFERS
INTERNAL
ADDRESS
COUNTER
REFRESH
CONTROL CLOCK
ROW
DECODERS
WORD
DRIVERS
ON CHIP
VBB GENERATOR
ROW
ADDRESS
BUFFERS
RAS
LCAS
UCAS
A0~A8
VCC
VSS
WE OE
DQ1~DQ8
DQ9~DQ16
9 9
16 16
8
8
8
8
8
8
8
8
9 9
IC301 : BS62LV1026SC-55
1M SRAM
IC311 : AK4628VQ
192kHz 24bit 8ch CODEC
1
2
3
4
5
6
7
8
9
10
11
SDOS
I2C
SMUTE
BICK
LRCK
SDTI1
SDTI2
SDTI3
SDTO
D AUX
DFS
12 13 14 15 16 17 18 19 20 21 22
SDTI4
DZFE
TVDD
DVDD
DVSS
PDN
TST1
CAD1 CAD0
LOUT4
ROUT4
33
32
31
30
29
28
27
26
25
24
23
DZF2/OVF
RIN
LIN
NC
TST2
ROUT1
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
44 43 42 41 40 39 38 37 36 35 34
TDM0 LOOP0/SDA/CDTI DIF1/SCL/CCLK DIF0/CSN P/S MCLK DZF1 AVSS AVDD VREFH VCOM
DATT L P F DAC
L OUT1
H P F A D C
L IN
MCLK
LRCK
BICK
DAUX
SDOS
SDTO
SDTI1
SDTI2
SDTI3
SDTI4
FORMAT
CONVERTER
H P F A D C R IN
DATT L P F DAC R OUT1
DATT L P F DAC L OUT2
DATT
L P F DAC R OUT2
DATT L P F DAC
L OUT4
DATT L P F DAC
DATT L P F DAC
L OUT3
DATT L P F DAC
R OUT4
R OUT3
A U D I O
I / F
MCLK
LRCK
BICK
SDOUT
SDIN1
SDIN2
SDIN3
SDIN4
* 電圧は、内部抵抗10MΩの電圧計で測定したものです。
*
Z
印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
* 本回路図は、標準回路図です。改良のため予告なく変更することがございます。
Point
q
(Pin 29 of IC302)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0V
Point
w
(Pin 13 of IC306)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0V
Point
e
(Pin 28 of IC312)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VCC
Address
Input
Buffer
Column Decoder
Row
Decoder
Memory Arrey
1024 x 1024
A15
CE2
WE
A13
A8
A9
A11
OE
A10
CE1
DQ7
DQ6
DQ5
DQ4
DQ3
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
NC
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
A6
20 1024
1024
126
Address Input Buffer
14
1024
DQ0
DQ1
DQ2
GND
A7
A12
A14
A16
A15
A13
A8
A9
A11
Control
CE2
CE1
WE
OE
Vdd
Gnd
A5 A4 A3 A2 A1 A0 A10
Data
Input
Buffer
Data
Output
Buffer
Column VO
Write Driver
Sense Amp
DQ0
8
8
8
8
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7