Yamaha HTY-7040 Service Manual page 83

A B C
SCHEMATIC DIAGRAMS
DSP 1/2
1
2
IC20
0
0
0
0
3.4
3
DIGITAL IN
0.4 3.3
0 0
4.9 0
0.4
0
IC3 D-1
0 0
3.4 3.4
4.9 1.6
DIR
0 1.7
0 1.6
3.4 3.4
0 0
4
Selector
5
0 3.3
1.7 0
1.7
0
1.7
0
1.3
1.7
0 1.7
1.7 0
0 1.7
6
0
3.3
1.3 0
1.3
1.7 0
1.7
1.7 0
1.7
1.7 0
1.7
0 0
7
CB1
8
9
POINT D-1 XL1 (Pin 29 of IC3)
10
D E F
0 3.4
3.3 0
3.3 3.3
2.4 3.3
2.4 2.3
IC6
2.3
3.4
0
1.6 1.6
0 0
0
0 0
0
1.7
0
0
0
0
DSP1
0
1.3
0
3.3
0
0 Decoder / Post processor
0
3.3
0
1.3
1.6
0
IC5
3.3
0 3.3
1.3
0
3.3
IC4
0 0
0
0
1.3
0 No replacement part available.
3.4
サービス部品供給なし
3.3
3.3
0
3.3
3.3
1.3
3.3
3.3
0
1.3
3.2
IC2: TC74VHC244FT
Octal bus buffer non-inverted 3-state outputs
IC1: TC74VHC157FT
Quad 2-channel multiplexer 1G 1
1A1 2
SELECT 1 16 Vcc
2Y4 3
1A 2 A S G 15 ST
1A2 4
1B 3 B A 14 4A
1Y 4 Y B 13 4B 2Y3 5
2A 5 12 4Y
A Y 1A3 6
2B 6 B A 11 3A
2Y2 7
2Y 7 Y Y B 10 3B
1A4 8
GND 8 9 3Y
2Y1 9
GND 10
G H I
FRONT
SURROUND
CENTER
ADC
0
3.4
1.4 1.7
1.7 0.7
0 0
5.0
2.5 0
2.5 5.0
2.5
2.5
2.5
2.5
0
0
3.3
0
0
3.3
3.3
1.3
3.3
0
3.3
0
3.3
0
3.3
2.5
3.3
0
DRAM
1.3
1.9
1.9
0
1.3
1.3
2.7
2.8
0
3.4
0
0.1 0.1
3.3
0.1 0.1
3.0
0 0
2.5
0 0.1
0
0.1 0.1
1.3
3.4 3.4
0
0.1 0.1
0
0.1 0.1
0
0
0
3.3
0 0.1
0.1 0.1
3.4 3.4
3.3
3.3 3.2
3.3 1.7
3.3 3.3
0
3.3 0
2.5 0
0 2.5
1.9 3.0
1.9 2.8
1.3 2.7
0
3.4
IC6: TC7SHU04FU
IC4: TC7SH08FU
20 Vcc
Inverter
2-input AND gate
19 2G
18 1Y1
NC VCC
1 5
IN B 1 5 V
CC
17 2A4
A Y
IN A IN A
2 2
1Y2
16
L H
GND 3 4 OUT Y
15 2A3 3 4
GND OUT Y
H L
14 1Y3
13 2A2
12 1Y4
11 2A1
J K
IC10
IC20: TC7SH126FU
Bus buffer
G V
1 5 CC
IN A
2
GND 3 4 OUT Y
G A Y
L X Z
IC11
H L L
H H H
IC7: TC74LCX245FT
Low voltage octal bus transceiver with 5-V tolerant inputs and outputs
DIR Vcc
1 20
A1 2 19 OE
A2 3 18 B1
A3 4 17 B2
A4 B3
5 16
A5 6 15 B4
A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
GND 10 11 B8
0 0
0 0
5.0 ANALOG IN
2.5
2.5
0
Page 85 A2
to INPUT_CB13
FLASH ROM
0 0
0 3.4
0
0
0 0.1
2.5 0.1
0 0.1
0 0.1
2.5 0.1
0.1
0.1
3.3 0.1
3.3 3.4
0.1
0.1
0.1
0 0
0 0
3.0 0.1
2.8 0.1
2.7 0.1
1.3 3.3
0
1.9
1.9 3.3
0 3.3
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# 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.
L M N
YSP-4000/YSP-40D/HTY-7040
IC9: WM8738
24-bit stereo ADC
6 4 11
AVDD 9
CONTROL
INTERFACE
CAP 5
AGND 10
7 ADC SDATO
RIN 2
12 LRCLK
DIGITAL AUDIO
FILTERS INTERFACE
3 BCLK
LIN 8 ADC 13 MCLK
1 14
IC10, 11: PQ1CZ41H2Z
Chopper regulators
V
V OUT
IN
2
1
Voltage ON/OFF
regulator circuit
ON/OFF control
PWM COMP.
5
Q
Overcurrent
R
detection F/F
circuit S
ERROR AMP. O
adj
4
V
ref
Overheat
detection
circuit
3
COM
IC8: W9816G6CH-7
512 K x 2 banks x 16-bit SDRAM
CLK 35
CLOCK
BUFFER
CKE 34
CONTROL COLUMN DECODER
CS 18
SIGNAL R
RAS 17 GENERATOR O
COMMAND
W
CAS 16 DECODER
D CELL ARRAY
2 DQ0
E
WE 15 BANK #0
C
3 DQ1
O
D
E 5 DQ2
R
A10 20
6 DQ3
SENSE AMPLIFIER
8 DQ4
9 DQ5
MODE 11 DQ6
A0 21
REGISTER
12 DQ7
A3 24 ADDRESS
REFRESH DQ
BUFFER
39 DQ8
A4 27 COUNTER BUFFER
40 DQ9
A9 32
42 DQ10
BA 19
43 DQ11
45 DQ12
46 DQ13
REFRESH COLUMN
COLUMN DECODER
48 DQ14
COUNTER COUNTER
R
O 49 DQ15
W
D CELL ARRAY
E
BANK #1
C
O
D
E
14 LDQM
R
36 UDQM
SENSE AMPLIFIER
IC5: D70YE101BRFP266
Floating-point digital signal processors
Program/Data
JTAG EMU
256
RAM
D1
256K Bytes McASP0
Data 64 32
16 Serializes
R/W Program/Data
ROM Page1
C67x+ Microprocessor 256
32
256K Bytes
D2
Memory
Data 64 Controller 32
Program/Data
R/W McASP1
256 ROM Page2
6 Serializes
256K Bytes
32
Program
I/O INT Fetch Program/Data
32
ROM Page3 McASP2
256
256K Bytes 2 Serializes
32 DIT Only
CSP 32 32
Program
32 SPI1
Cache 256
32K Bytes PMP DMP
32 SPI0
32 32
32 I2C0
High-performance
32
Crossbar Switch
32 I2C1
32 32 32 32
32 RTI
32 PLL
I/O Interrupts MAX0 CONTROL MAX1 Events
Out In
EMIF
dMAX
Peripheral Interrupt and DMA Events
IC3: LC89057W-VF4AD-E
Digital audio interface transceiver
EMPHA/UO AUDIO/VO INT CL CE CI XMODE
32 33 35 40 39 38 41
RXOUT 1 Microcontroller
Cbit, Ubit 37 DO
I/F
RX0 2
36 RERR
RX1 3
RX2 4
Demodulation
Input Data
RX3 5 21 RDATA
Selector &
Selector
Lock detect
RX4 8
RX5/VI 9
SDIN
24
RX6/UI 10
16 RMCK
LPF 13 PLL
17 RBCK
Clock 20 RLRCK
TMCK/PIO0 44
Selector
22 SBCK
Modulation
TBCK/PIO1 45 1/N
& 23 SLRCK
TLRCK/PIO2 46
Parallel Port
47
TDATA/PIO3
TXO/PIOEN 48
29 28 27 34
XIN XOUT XMCK CKST
83