Yamaha HTR-5940, Руководство по обслуживанию

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A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
RX-V459/HTR-5940/HTR-5935/DSP-AX459
70
★
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.
DSP 2/3
DIGITAL IN
ANALOG IN
PL/PR
FL/FR
SBL/SBR
C/SW
SL/SR
0.1
5.0
0
4.0
0
4.9
0.3
0
4.9
0.3
0
4.9
2.4 2.4 0.6
5.0
0
0 4.9 0
0 4.9 0
0.1
0
0
0.3
0
3.3
0.3
0.6
0
3.3
0
4.0
3.3
3.3
3.3
0
0
3.3
1.6
1.5
1.7
3.3
0
0
3.1
1.3
1.3 3.1
0
3.1
0
3.3 5.0
3.3 5.0
0
0
3.3
0
1.7
0
3.3
1.7
0
1.7
0
0 3.3 0
3.3 0 5.0
3.2 0.1 3.1 0.9
3.3
0.6 5.0
0.9 3.5
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
0.5
0
5.0
0 0 0.1 3.1 3.2
0
0.1 0.1 0.1 0.1 0
3.3
3.3 0 0.5 0.1 5.0 0 5.0 5.0 5.0
3.3
3.3
0
0
0
0
1.7
0.1
0
0
0
0
1.2
1.7
3.3
0
1.7
0
3.3
0
1.2
1.7
0
3.3
1.2
0
0
0
1.2
0
3.3
3.3
3.3
0
3.3
3.3
1.2
3.3
3.3
0
0
0
0
0
3.3
3.3
1.2
3.3
0
3.3
0
3.3
0
3.3
0.4
3.3
0.1
1.2
0.1
0.1
0
3.0
1.6
1.2
1.8
0
3.3
2.8
2.9
0
1.2
0.1
0.1
0.1
3.3
3.3 3.3
2.9
0
0.1
3.3
0.1
1.2
0.1 0.2
0
0.2
3.3
0.1 0.2
1.2
0
0.1
0.1
1.2
0.2 0.2 0.1
3.3
0
0.2 0.2
1.2
0.2
2.9
3.3
0
1.7 3.3
0
1.7
0
1.7 1.7
0
1.7
0 0
3.3
0 0
0 1.2
0.1 1.3
0 1.2
3.1 0.9
3.3 0 1.2
3.3 3.3
0.4
0
1.7 1.7 1.7
0
0.5
3.3
3.3
3.3
0
3.3
0.2
0.1
0
0.2
0.2
3.3
0.2
0
0.1
0.1
0.1
3.3
2.9
3.3
3.3
3.3
0
3.3
0.4
0.1
0.1
0.1
3.0
3.3
0
0.1
0.1
0
0.2
0.2
3.3
0.1
0
0.2
0.2
0.2
3.3
2.9
1.7
3.3
0.1
0.1
2.9
2.8
1.8
1.6
0
0.1
0
0
0.1
0.4
0.1
0.1
2.9
3.3
3.3
0
0
2.8
1.8
1.6
3.0
0.1
0.1
0.1
0
3.3
0
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.2
3.3
0.1
0.2
0.2
0.2
0.2
0.1
0.2
0.2
3.3
0
3.3
3.3
A-2
0 0
0
5.4 0.1
0.1
0
0 0 0 0.2
0.2
0.2
0.2
1.8
1.8
1.8
0 0 0
3.5 3.5
3.3 3.5
1.5 1.5 1.5 1.5
0
0
0
3.5
3.5
3.5
3.5
3.5
3.5
3.5
0
0
0
0
0
1.9
1.8
0.2
A-1
DSP
XMDT
DIR
BUFFER
16M SDRAM 4M ROM
SELECTOR
S29AL004D70TF1020
No replacement part available.
サービス部品供給なし
IC54 : NJM2885DL1-33
Low dropout voltage regulator
Thermal
Protection
Bandgap
Reference
V OUT V IN
GND
1 3
2
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC63 : SN74AHCT08PWR
Quadruple 2-input positive-AND gates
Vcc 14 1A 1
Y 4
B 2
GND 3
IC61, 62 : SN74AHCT1G32DCKR
Single 2-input positive-OR gate
Vcc 5 A 1
IC64 : W9816G6CH -7
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
IC52 : 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
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
IC65 : SN74LV245APWR
Octal bus transceiver with 3-state outputs
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
IC56 : LC89057W-VF4A-E
Digital audio interface transceiver
IC53 : R1172S121D-E2-F
Power supply
V
DD
CE
Vref
Current Limit
V
OUT
GND
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
V
CC
G
4A
4B
4Y
3A
3B
3Y
IC58 : SN74LV157APWR
Quadruple 2-line to 1-line data selectors/multiplexers
Y 4
B 2
GND 3
IC59 : SN74AHC1G08DCKR
2-input positive-AND gate
Vcc 5 A 1
POINT A-2 Pin 29 of IC56 POINT A-1 Pin 28 of IC55
IC66 : S29AL004D70TF1020
4M-bit COMS 3.0 volt-only boot sector flash memory
A1
A15
NC
A14
A13
A12
A11
A10
A9
A8
NC
NC
WE#
RESET#
NC
NC
RY/BY#
A17
A7
A6
A5
A4
A3
A2
1
16
2
3
4
5
6
7
8
17
18
19
20
21
22
23
24
9
10
11
12
13
14
15
A16
DQ2
BYTE#
VSS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ9
DQ1
DQ8
DQ0
OE#
VSS
CE#
A0
DQ5
DQ12
DQ4
VCC
DQ11
DQ3
DQ10
48
33
47
46
45
44
43
42
41
40
39
38
37
36
35
34
25
32
31
30
29
28
27
26
In put/ Out put
Buff ers
X- Decoder
Y-Decoder
Chip Enab le
Out put Enable
Logi c
Erase V olt ag e
Generat or
PGM Vo ltag e
Generator
Tim er VCC De te ctor
State
Contr ol
Comm and
Regi st er
VCC
VSS
WE#
BYTE#
CE#
OE#
STB
STB
DQ0–DQ15 (A- 1)
Sect or Sw itc hes
RY/ BY#
RESET#
Data
Lat ch
Y- Gating
Cell M atrix
Addr
e
ss
La
tc
h
A0– A17
100/16
100/16
100/16
&6
XM