Schematic Diagram - Yamaha RX-V750 Service Manual

A B C
SCHEMATIC DIAGRAM (DSP)
1
DUTY CORRECTOR
4.9
4.9
0
4.9
3.6
4.9
0
4.9 4.9
3.6
0 0
0 0
2.6
2
0.2
0.1
0 0
4.9
0
0.1
0
0.1
4.8
4.9
0.1
0.1
4.9
0.1
4.1
0
4.8
0.3
3 0
4.8
3.3
0.4
0
3.6
0.3
0
4.8 3.4
3.1
0.4
2.6 3.2 0.2
0
4 0.4
3.4
0
2.6 3.2 0.4
0 4.8
0.4
DIGITAL IN
5
s2
4.9
0.2 0.2
0.2 4.9
0.2 3.3
0.2 0.2
0.2 0.2
0.2
0.2
3.1
0.2
0.2
0.2
0.2 3.3
6
3.3
0.2 0.2
0.2 3.1
0.2 0.2
0.2 0.2
0.2 0.2
0.2 0.2
0
0 0.2
0
1M 1.3
1.3
SRAM
3.4
2.8
0
2.8
3.4
3.4
1.3
7
1.3
0
0
3.4
0
3.4
3.4
1.3
1.3
0
0
0
3.4
3.4
3.4
8
9
IC3 : TC74HCT00AF IC1 : MM74HCU04SJX
Quad 2 Input NAND Hex Inverters
IC4 : NJM2904M-T1
IC17, 19, 21 : NE5532DR
IC18 : µPC4570G2
A1 1 14 V 1A 1
DD
IC20 : NJM2068MD-TE2
B1 2 13 B4 1Y 2
10 Dual OP-Amp
Y1 3 12 A4 2A 3
A2 4 11 Y4 2Y 4
OUT 1 1 8 +V CC
B2 5 10 B3 3A 5
–IN 1 2 7 OUT 2
+ – + –
+IN 1 3 6 –IN 2 Y2 6 9 A3 3Y 6
–V 4 5 +IN 7
CC 2 V SS 7 8 Y3 V SS
D E F
RX-V750/DSP-AX750/DSP-AX750SE/RX-V650 Page 83
100/16 47/16
s2 C2
UR23810 UR83747
100/16 47/16
s3 C22, 78, 80, 87, 105
UR23810 UR23747
s4 C17, 19, 33, 50, 53, 100/16 47/16
125 UU13810 UU13747
X: NOT USED
O: USED / APPLICABLE
3.0 1.3
4.9 2.5
3.4 4.9
3.4 4.9
REGULATOR
3.4
3.3
0.1
0
0
DIR
3.4
1.6
1.6
1.7
1
3.4
0
0.2
1.3
1.3
0
3.3
0.2
0.2
ADAM 0.2
1.3
(DECODE DSP)
1.3
0
0
3.4
0.2
0.3
1.2
1.3
1.3
0
0
0.1
3.4
0.1
SL/SR
0.7
0
0
~
1.3
1.8
1.7 L/R
SBL/SBR
DIGITAL IN
A/D IN
IC22 : SN74AHCT08PWR IC14 : 74VHC157MTCX
Quad 2 Input AND 2 to 1 Data Selectors
INPUTS OUTPUT INPUTS OUTPUT
14 V A1 1 14 V
DD DD
V CC STROBE 4A 4B 4Y 3A 3B 3Y
13 6A B1 2 13 B4 16 15 14 13 12 11 10 9
12 6Y Y1 3 12 A4
G 4A 4B 4Y 3A 3B
INPUTS
11 5A A2 4 11 Y4 S 3Y
SELECT STROBE
G
10 5Y B2 5 10 B3 1A 1B 1Y 2A 2B 2Y
X H
L L
H L
9 4A Y2 6 9 A3
1 2 3 4 5 6 7 8
SELECT 1A 1B 1Y 2A 2B 2Y GND
8 4Y V SS 7 8 Y3
INPUTS OUTPUT INPUTS OUTPUT
G H
J-2 RX-V750/DSP-AX750/DSP-AX750SE/RX-V650 Page 81 K-10
HTR-5760 Page 82 K-10
HTR-5760 Page 84 K-2
TO OPERATION (4) W881 TO FUNCTION (2) CB506
ANALOG IN
4M DRAM
2.5
0
1.3
1.3
1.9
1.9
1.9
EVE
1.9
1.3
(POST PROCESSING DSP)
3.4 1.3
4.8 1.3
2.8 1.3
2.9 3.4
3.4 1.7
4.9 1.7
1.7
1.7
~
0.1
PL/PR
0.1
0 SL/SR ~
1.5
0.1
SBL/SBR
0.7 0.2
~ C/SW ~
1.3 1.9
L/R
2.5 0
C/LFE
3.4
2.8
3.4
IC10 : SN74LV245APWR IC6 : CY62128BLL-70SCT
Octal 3-State Bus Transceivers Static RAM
NC 1 32 VCC
DIR
1 20 V CC
A16 2 31 A15
A1 19 ENG A14 3 30 CE2
2
A12 4 29 WE
A2 3 18 B1
A7 5 28 A13
A6 6 27 A8
A3 4 17 B2 INPUT BUFFER
A5 7 26 A9
A0
A1
A4 5 16 B3 A4 8 25 A11
A2
A3 9 24 OE A3
512 X 512
A5 6 15 B4 A4
A2 10 23 A10
A5
ARRAY
A6
A1 11 22 CE1
A6 7 14 B5
OUTPUT A7
Y A0 12 21 I/O7 A8
A7 8 13 B6 I/O0 13 20 I/O6
L
A
I/O1 14 19 I/O5 COLUMN
B
A8 9 12 B7 CE1
DECODER
I/O2 15 18 I/O4 CE2
WE
GND 10 11 B8 GND 16 17 I/O3
OE
I J K
RX-V750/DSP-AX750/DSP-AX750SE/RX-V650 Page 83 F-7
Page 80 F-1 HTR-5760 Page 84 F-7
TO OPERATION (1) CB804
TO FUNCTION (1) CB305
0.7
0
9.1 5.0
5.0
9.1
DAC
11.8
1.8 1.4
1.4 0
1.7
1.5 5.0
1.7
0
3.4 2.4
4.9 2.4
3.4 2.4 1.4
2.9 2.4
1.4 0
–11.8
s4
3.4 3.4
0.1 0
1.9 1.7
1.5 1.7
0 1.7
1.7
0 11.8
1.7
0 0
0 1.7
0
SW
0 0
0
–11.8
11.8
0
0 0
ANALOG IN
0 0
0 0
0 2.5
–11.8
0.1 CODEC 2.5
1.7
0
1.7
2.5
~
0.2 2.5
1.5 2.5
1.9 2.5 11.8
0
0 2.5 0 0
0 2.5
A/D IN
0
0 0
–11.8
11.8
0
0 0
0
0 0
–11.8
IC8 : MSM514260E-60JS
262,144 word x 16 bit Dynamic RAM
VCC 1 40 VSS
WE OE
DQ1 2 39 DQ16
TIMING
RAS
DQ2 DQ15 GENERATOR
3 38
I/O
DQ3 4 37 DQ14 LCAS CONTROLLER
DQ4 5 36 DQ13
UCAS
I/O
VCC 6 35 VSS
CONTROLLER
DQ5 7 34 DQ12
COLUMN COLUMN
DQ6 8 33 DQ11
I/O0 9 ADDRESS 9 DECODERS
DQ7 9 32 DQ10 BUFFERS
I/O1
DQ8 DQ9
10 31
SENSE I/O
I/O2 NC 11 30 NC INTERNAL 16
REFRESH AMPLIFIERS SELECTOR
A0~A8 ADDRESS
NC 12 29 LCAS CONTROL CLOCK
COUNTER
I/O3
WE 13 28 UCAS
I/O4
RAS 14 27 OE
ROW
ROW WORD MEMORY
I/O5 NC 15 26 A8 9 ADDRESS 9
DECODERS DRIVERS CELLS
BUFFERS
A0 16 25 A7
I/O6
A1 A6
17 24 VCC
I/O7
A2 18 23 A5
ON CHIP
A3 19 22 A4
VBB GENERATOR
VCC 20 21 VSS
VSS
L M N
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760
Point q (Pin 28 of IC2)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0 0
0.5
11.7 –11.7
0V
0.1
IC15 : AK4382AVT
L
D/A Convertter
MCLK
1
14 VDD
CSN 6
DE-EMPHASIS CLOCK
µP 13 VSS
CONTROL DIVIDER
CCLK 7
INTERFACE
16 DZFL
CDTI 8
DZFR
15
∆ ∑ 12 AOUTL+
LRCK 4 8X
SCF
INTERPOLATOR MODULATOR
11 AOUTL–
AUDIO
BICK 2 DATA
INTERFACE
∆ ∑ 10 AOUTR+
8X
SCF
SDTI INTERPOLATOR MODULATOR
3 9 AOUTR–
5
PDN
ANALOG IN
IC16 : AK4628VQ
192kHz 24bit 8ch CODEC
SDOS DZF2/OVF
1 33
I2C 2 32 RIN
SMUTE 3 31 LIN
C BICK 4 30 NC
LRCK 5 29 TST2
SDTI1 ROUT1
6 28
SDTI2 7 27 LOUT1
SDTI3 8 26 ROUT2
SDTO LOUT2
9 25
SW
D AUX 10 24 ROUT3
DFS 11 23 LOUT3
SBL A U D I O
L IN A D C H P F I/F
MCLK MCLK
LRCK LRCK
R IN A D C H P F
BICK BICK
DAUX
L OUT1 L P F DAC DATT
FORMAT
R OUT1 L P F DAC DATT
CONVERTER
L OUT2 L P F DAC DATT
SDOUT
R OUT2 L P F DAC DATT
SDOS
L OUT3
L P F DAC DATT SDTO
SL
R OUT3 L P F DAC DATT
SDIN1 SDTI1
SDIN2 SDTI2
L OUT4 L P F DAC DATT
SDIN3 SDTI3
SDTI4
R OUT4 L P F DAC DATT SDIN4
PL
IC12 : PQ025EZ5MZP
IC13 : PQ012FZ01ZP
Rgulator
DC INPUT (VIN) 1 3 DC OUTPUT (VO)
I C
2 ON/OFF CONTROL (VC)
5
GND
OUTPUT
8 8 * All voltages are measured with a 10M Ω /V DC electronic volt meter.
BUFFERS
DQ1~DQ8 * Components having special characteristics are marked Z and
INPUT
8 8 must be replaced with parts having specifications equal to
BUFFERS
those originally installed.
16 * Schematic diagram is subject to change without notice.
INPUT
8 8
BUFFERS
DQ9~DQ16
OUTPUT
8 8
BUFFERS Z
79