Yamaha RX-V557, Руководство по обслуживанию

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A
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5
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8
9
10
B C D E F G H I J K L M N
81
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
SCHEMATIC DIAGRAM (DSP 1/2)
★
All voltages are measured with a 10M
Ω
/V DC electronic 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.
★ 電圧は、内部抵抗10MΩの電圧計で測定したものです。
★
s 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。
IC1: SN74LVU04APWR
Hex Inverters
1A
1Y
2Y
VCC
6A
1
2
3
4 11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 4Y 8
9
10
GND
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC3:
SN74AHCT00PWR
Quad 2-Input Nand Gate
Vcc 14 1A 1
IC6: W9816G6CH
512K x 2 Banks x 16 Bits SDRAM
CLOCK
BUFFER
ADDRESS
BUFFER
CLK 35
18
CKE 34
A10 20
CS
17 RAS
16 CAS
15 WE
21 A0
〜
24 A3
27 A4
〜
32 A9
19 BA
2 DQ0
3 DQ1
5 DQ2
6 DQ3
8 DQ4
9 DQ5
11 DQ6
12 DQ7
39 DQ8
40 DQ9
42 DQ10
43 DQ11
45 DQ12
46 DQ13
48 DQ14
49 DQ15
14 LDQM
36 UDQM
COMMAND
DECODER
REFRESH
COUNTER
REFRESH
COUNTER DQ
BUFFER
COLUMN
COUNTER
MODE
REGISTER
CONTROL
SIGNAL
GENERATOR
CELL ARRAY
BANK #0
R
O
W
D
E
C
O
D
E
R
COLUMN DECODER
SENSE AMPLIFIER
CELL ARRAY
BANK #1
R
O
W
D
E
C
O
D
E
R
COLUMN DECODER
SENSE AMPLIFIER
2
3
5
6
11
10
14
13
15
1
G
A/B
4B
4A
3B
3A
2B
2A
1B
1A
4
7
9
12
1Y
2Y
3Y
4Y
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A/B
1A
1B
1Y
2A
2B
2Y
GND
VCC
G
4A
4B
4Y
3A
3B
3Y
IC7: SN74LV157APWR
Quadruple 2-line to 1-line data selectors/multiplexers
V SS
V
CC
WE
CE
A
0
to A
17
OE
Erase Voltage
Generator
DQ 0 to DQ 15
State
Control
Command
Register
Program Voltage
Generator
Low V
CC
Detector
Address
Latch
X-Decoder
Y-Decoder
Cell Matrix
Y-Gating
Chip Enable
Output Enable
Logic
Data Latch
Input/Output
Buffers
STB
STB
Timer for
Program/Erase
A
-1
BYTE
RESET
RY/BY
Buffer
RY/BY
A15
A14
A13
A12
A11
A10
A9
A8
N.C.
N.C.
WE
RESET
N.C.
N.C.
RY/BY
N.C.
A17
A7
A6
A5
A4
A3
A2
A1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25 A16
BYTE
VSS
DQ 15/A-1
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
VCC
DQ11
DQ3
DQ10
DQ2
DQ9
DQ1
DQ8
DQ0
OE
VSS
CE
A0
IC8: MBM29LV400BC
FLASH MEMORY
1 DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
Vcc
OE
B1
B2
B3
B4
B5
B6
B7
B8
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
IC10: SN74LV245APWR
Octal Bus Transceiver with 3-state Outputs IC11:
µ
PC29M33T-E1
Voltage Regulator
3 OUTPUT
1 INPUT
2 GND
Safety Drive
Limiter
Excessive Electric
Current Protection
Sudden Current
Protection
Starter Circuit
Driver
Standard Voltage
Overheat Protection
Amp.
Y 4
B 2
GND 3
IC12: SN74AHC1G08DCKR
2-Input And Gate
Vcc 5 A 1 1
DC input
(Vin)
GND
DC output
(Vo)
3
5
IC13: PQ012FZ01ZP
Voltage Regulator
2
Bias power supply
(VB)
ON/OFF control
(Vc)
4
Specific IC
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC22: SN74AHCT08PWR
Quad 2-Input And Gate
Vcc 14 1A 1
Input
Selector
RXOUT
RX0
RX1
RX2
RX3
RX4
RX5/VI
RX6/UI
LPF
TMCK/PIO0
TBCK/PIO1
TLRCK/PIO2
TDATA/PIO3
TXO/PIOEN
Cbit, Ubit
Microcontroller
I/F
Data
Selector
Clock
Selector
Modulation
&
Parallel Port
PLL
XIN XOUT XMCK CKST
SLRCK
SBCK
RLRCK
RBCK
RMCK
SDIN
RDATA
RERR
DO
XMODE CI CE CL INT AUDIO/VO EMPHA/UO
1/N
Demodulation
&
Lock detect
1
2
3
4
5
8
9
10
13
44
45
46
47
48
29 28 27 34
23
22
20
17
16
24
21
36
37
41 38 39 48 35 33 32
IC2: LC89057W-VF4D-E
Digital Audio Interface Transceiver
Y 4
B 2
GND 3
IC26: SN74AHCT1G32DCKR
2-Input or Gate
Vcc 5 A 1
A-3
Point: A-3 Pin 28 of IC2
DIGITAL IN
DIGITAL IN
ANALOG IN
ANALOG IN
DIGITAL IN
3.4
0.1
0.1 3.4 1.7 1.7
0
3.4
1.7 0.1
0
0
0
0
3.4
0.1
4.4
4.3
4.0
4.0
3.4
3.4
3.4
3.4
1.6
1.7
1.6
3.4
3.4
0
0 3.4 4.8 3.4 0.4 0.5 3.0
0 3.4 3.4 0
0
0
0.1
0.1
2.0 3.2
3.4
0
2.9 1.3
0
1.3
0
3.4
3.4
0.1
4.9
0
0
3.4
4.9 0.1 3.4
4.9
4.9
0
4.0
0
4.9
4.3
0
4.9
4.0
0
4.9
2.3 1.8
4.9
4.4
0.1 4.9 4.9
0 4.9 0
0.1
0
1.7
1.7
0.1
1.7
1.9
1.8
0 1.7
3.4
0
0.1
0
0.1
1.7
0.2
0
3.4
1.7
0.1
3.4
0.1
3.4
0
3.4
0
0
0
0
0
3.0
0.1
5.0
0
5.0
0
5.0
3.4
5.0
3.4
0
0.1
5.0
3.4
0 3.4 3.1 0.1 3.4 3.4 0.5 0.4 0
3.4
0
4.4 4.8 4.8 4.5 4.5 0.7 0.7
0
3.1
3.5 0
3.2
0
3.2
3.2
3.5
3.4
3.2
3.2
3.2
3.5
3.2
3.4
3.4
3.4
3.4
0.8
0.2
0.4
0.4
0.4
3.4
3.5
0
3.2
3.1
0
3.2
3.2
3.5
3.2
3.2
3.2
3.2
3.5
3.2
1.8
3.5
0.2
0.2
1.7
2.1
2.5
2.7
0
0
0.2
0.2
0.2
0.2
0.8
0.2
0.2
0.2
3.4
3.4
0.2
0.2
1.7
2.1
2.5
2.7
3.4
0.4
0.4
0.2
3.5
0
3.2
3.2
3.1
3.2
3.2
3.2
3.2
3.5
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.1
0
3.4
0.4
3.2
0.1
1.3
0
3.4
3.4
3.4
0
1.3
0.1
1.3
0
0.1
0.1
1.7
1.3
0
1.7
3.4
0
1.3
0
3.1
3.0
3.4
0
1.3
0.5
0
1.3
3.4
3.4
1.3
3.4
0
1.3
3.4
0
0
1.3
1.3
0
3.4
1.7
0.2
1.7
1.3
0.1
1.3
1.3
0
~
1.3
1.3
0.1
0.1
0
3.4
1.7
1.7
3.4
3.4
0
1.3
3.1
3.2
3.2
3.2
3.2
3.2
3.4
0
1.3
3.2
3.2
3.2
3.2
3.2
3.2
3.2
1.3
0
3.4
3.1
3.2
3.2
3.4
3.2
3.4
0
1.3
1.3
0
3.4 3.4 3.4
0
1.3 0.4 0.3 0.4 3.4
0
1.3 3.4 2.7 2.5 2.1 3.4
0
1.7
3.4
0.2
1.8
3.4
1.3
0
3.4
3.4
0
0.2 3.4
0
1.3 0.2 0.8 0.2 0.2 0.2 0.2 1.3
0
3.4 0.2 0.2 0.2 3.4 3.4
1.3
1.3 0 3.4
3.4 1.7 0 3.1
1.3 0 0 1.3 1.3 0 3.4 3.4 3.4 1.3 0 3.4 3.4 3.4 3.4 3.4 0
0
1.3
3.4
3.4
0.1
3.4
1.3 0 1.3
0.1
3.4
0 3.4
0
3.4
0 1.3
0
0
3.4
to SUBTR (2)
HTR-5850: Page 89 J9
RX-V457/HTR-5840/DSP-AX457: Page 90 J9
RX-V557/DSP-AX557: Page 88 J9
DSP
MAIN
DECODER
16M SRAM
4M ROM
DIR
BUFFER
BUFFER
SELECTOR