Yamaha DSP-AX1/RX-V1 Service Manual page 76

A B C
DSP-AX1/RX-V1
SCHEMATIC DIAGRAM (DSP(1)-2)
1
2
4.8
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
4.8
0
~
~
~
~
~
4
~
~
~
~
0
3.2
2.0
2.5
4.6
5
1.6
4.8
4.8 4.8
0
~
4.8
0
4.8
4.8
0 ~
0
L/R
6
DIGITAL FILTER
L
7
DAC
8
9
Point t (Pin 3 of IC7)
V : 1V/div, H : 50 nsec/div
DC, 1 : 1 probe
10
0V
E-91/J-83
D E F
RAM RAM
3.2
4.8
DSP6
RC
FL/FR
RL/RR
C/LFE
4.8
0
L/R
RC
LS/RS
C/LFE
L/R
t
3.2
C/RC
REAR
CENTER
CENTER
µ IC57 : HD74HC00FPEL
IC47~56 : PC4570G2
Quad 2 Input NAND
Dual OP-Amp
A1 1 14 V DD
B1 2 13 B4
OUT 1 8 +V
1 CC
Y1 3 12 A4
–IN 1 2 7 OUT 2
+ – + –
A2 4 11 Y4
+IN 1 3 6 –IN 2
B2 5 10 B3
–V CC 4 5 +IN 2
Y2 6 9 A3
V 7 8 Y3
SS
G H
RAM
4.8
1.5
1.6
1.6
1.6
1.6
1.7
1.6
1.6
0
1.6
1.6
1.6
1.6
0 1.6
1.6
DSP6
0 3.5
0 1.6
0 4.8
~
0
0
2.4
~ 2.4
~ 2.4
2.4
~
~
~
~
0
~
0
~ 0
~ 3.2
~
0
4.8
~
~
~ 3.6
~ 3.9
~
~ 4.3
4.8 4.1
4.8
FL/FR
FRONT L
IC9, 12, 15, 18, 21 : DF1704E IC10, 11, 13, 14, 16, 17, 19, 20, 22, 23
24 bit Digital Filter : PCM1704F
24 bit D/A Converter
3 4 5 19 20
BCLK 2
BCKIN 2 WCLK 7
26 BCKO
SERIAL SERIAL INPUT I/F
LRCIN 28 INPUT DATA 1 &
I/F
WCKO CONTROL LOGIC
8X OVERSAMPLING 25
DIN 1 20BIT 9
DIGITAL FILTER OUTPUT
WITH I/F
INVERT 10
FUNCTION CONTROLLER
MD/CKO 24 DOL
11
REFERENCE
MC/LRIP 12
&
ML/RESV 23 DOR
13 SERVO
MODE
MODE 10 CONTROL
I/F SCK
MUTE 15
RST 14
CRYSTAL OSC POWER SUPPLY 19 17 4
DEM 16
17 18 27 6 7 9 22 8
I J K
3.2
4.8
0
RL/RR
FL/FR
3.0
4.4
C/RC
4.4
L/R
1.8
4.4
4.8
0
~
RC
0
0
FL/FR
0
RL/RR
~
0 C/LFE
L/R ~
~
0
4.8
~
~
~
~
~
~
4.8
3.2
RL/RR
REAR L
23—BIT DAC A
23—BIT DAC B 14 IOUT
BIPOLAR
3 NC
OFFSET
8 NC
13 NC
POWER SUPPLY 18 NC
5 6 20 16 11 12
L M N
IC33 ~ 35 : MSM514260C-60JS
262,144-word x 16 bit Dynamic RAM
VCC 1 40 VSS
DQ1 2 39 DQ16
DQ2 3 38 DQ15
DQ3 4 37 DQ14
DQ4 5 36 DQ13
VCC 6 35 VSS
DQ5 7 34 DQ12
DQ6 8 33 DQ11
DQ7 9 32 DQ10
DQ8 10 31 DQ9
NC 11 30 NC
NC 12 29 LCAS
WE 13 28 UCAS
RAS 14 27 OE
NC A8
15 26
A0 A7
16 25
A1 17 24 A6
A2 18 23 A5
A3 19 22 A4
VCC 20 21 VSS
WE OE
TIMING
RAS
GENERATOR
I/O
CONTROLLER
LCAS
OUTPUT
UCAS 8 8
I/O BUFFERS
CONTROLLER
DQ1~DQ8
COLUMN
COLUMN
9 ADDRESS 9 8 INPUT 8
DECODERS
BUFFERS BUFFERS
SENSE I/O
INTERNAL 16 16
REFRESH AMPLIFIERS SELECTOR
A0~A8 ADDRESS
CONTROL CLOCK
COUNTER
INPUT
8 8
BUFFERS
ROW
ROW WORD MEMORY
9 ADDRESS 9 DQ9~DQ16
DECODERS DRIVERS CELLS
BUFFERS
OUTPUT
8 8
BUFFERS
VCC
ON CHIP
VBB GENERATOR
VSS
P-E92/J84
E-1
P-E93/J85
D-4
P-E92/J84
D-1
P-E92/J84
D-1
* All voltage are measured with a 10MΩ/V DC electric 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.
O