Yamaha HTR-6280, Руководство по обслуживанию

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A
1 2 3 4 5 6 7 8 9
10
BCD
E
F
G
H
I
J
K
L
M
N
RX-V1065/HTR-6280/AX-V1065
122
DIGITAL 4/5
★
All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★
Components having special characteristics are marked
⚠
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。
●
⚠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。
IC66 IC65 IC61
IC62
IC63
IC67 IC67 IC67 IC67
IC68
CB61
CB64
CB62 CB63
1.7 1.7 1.3 3.3 3.3
3.3
3.4 3.3 0.4
0 0
0 0
1.7 1.7 1.7 1.3
5.1
1.3 1.3 1.3
0 0
0 0
0
1.7
0 0 5.1 3.4 0
0
0 0
5.1 5.1
0
10.2
10.2
5.1
5.1
5.0 2.6 2.6 2.6
2.5
0
0
0 0
1.3 1.3 1.3
2.5
2.5
2.5 2.5 2.5
2.5
2.5
1.7 1.7 1.7 1.7 1.7 1.7 0
3.4
5.1 5.0 0 5.1 0
3.4
0 0
3.4
0
2.6
5.0
0
0
0
5.1
0.2
4.0
0
12.0
-11.8
0 0 0
0.4 0.4
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0
0
3.4 3.4
5.0
0
5.1
0
-11.7 -11.7 -11.7 -11.7
-0.4 -0.4
3.3 1.1
0 0 0
2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
SUB
W
OOFER
SURR
OUND L
CENTER
SURR
OUND B
A
CK L
FR
ONT L
FL/FR C/SW SL/SR
SBL/SBR
DIGIT
AL IN
ANAL
OG IN
DIGIT
AL IN
IC62
: TC74VHC157FT
Quad 2-channel multiplexer
SELECT
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
7
GND
8
Vcc
16
ST
15
4A
14
4B
13
4Y
12
3A
11
3B
10
3Y
9
AS
G
BA YB AY BA YY
B
IC65
: PCM1680DBQR
Audio digital-to-analog converter
Output Amp and
Low-Pass Filter
System Clock
Manager
Enhanced Multilevel
DeltaœSigma
Modulator
DA
C
Serial
Input
I/F
Function
Control
I/F
System Clock
Zero Detect
Power Supply
DA
C
Output Amp and
DA
C
DA
C
Output Amp and
DA
C
Output Amp and
DA
C
Output Amp and
V
OUT
1
V
OUT
2
V
OUT
3
V
COM
V
OUT
4
V
OUT
5
V
OUT
6
Low-Pass Filter Low-Pass Filter
Low-Pass Filter
Low-Pass Filter Low-Pass Filter
Output Amp and
AGND2
V CC 2
AGND1
V CC 1
DGND
V DD
ZERO1
ZERO2
BCK
LRCK
D
A
T
A
1
(1
, 2)
D
A
T
A
2
(3
, 4)
D
A
T
A
3
(5
, 6)
D
A
T
A
4
(7
, 8)
MS/ADR
MC/SCL
MD/SD
A
MSEL
SCK
8
Oversampling
Digital Filter
With
Function
Controller
DA
C
Output Amp and
DA
C
Output Amp and
V
OUT
7
V
OUT
8
Low-Pass Filter
Low-Pass Filter
(1) Open-drain output for the PCM1782
NOTE: Signal names in parentheses ( ) are for the PCM1781.
Power Supply
Enhanced Multilevel
Delta-Sigma
Modulator
V
OUT
L
Oversampling
4 x 8
Digital Filter
With
Function
Control
Audio Serial
Port
BCK LRCK DATA
Serial
Control
Port
Zero Detect
(TEST) SCK
System
Clock
Manager
MC (DEMP1) M
S
(DEMP0)
Output Amp
and
Low-Pass Filter
MD (MUTE)
DAC
V
COM
System Clock
AGND
V CC
ZEROR/ZEROA
(1)
(ZEROA)
ZEROL/NA
(1)
Output Amp
and
Low-Pass Filter
DAC
V
OUT
R
(FMT)
ZEROA V
OUT
L
V
OUT
R
V
COM
AGND V
CC
NC TEST
16 15 14 13 12 11 10
9
FMT
DEMP0 DEMP1
MUTE
SCK
DATA
BCK
LRCK
1 2 3 4 5 6 7 8
IC61
: PCM1
781DBQR
A
udio digit
al-t
o-analog con
v
e
rt
er
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
V
IN
L
V
IN
R
V
REF
1
V
REF
2
V
CC
AGND PDWN
BYPAS
TEST LRCK
MODE1 MODE0 FMT1 FMT0 OSR SCKI V
DD
DGND DOUT BCK
IC66
: PCM1
803DBR
St
er
eo A/D
con
v
e
rt
er
BCK
V
IN
L
Reference
V
REF
1
V
REF
2
V
IN
R
Delta-Sigma
Modulator
Delta-Sigma
Modulator
x 1/64, x 1/128
Decimation
Filter With
High-Pass Filter
Power Supply AGND
V
CC
V
DD
DGND
Clock and Timing Control
Serial
Interface
Mode/
Format Control
LRCK DOUT FMT0 FMT1 MODE0 MODE1 BYPAS OSR PDWN SCKI TEST
IC67
: TC74VHCT08AFT
Quad 2-input AND gate
Vcc
14
4B 4A 4Y 3B 3A 3Y
1A
1 2 3
13 12 11 10
9 8
4 5 6 7
1B 1Y 2A 2B 2Y
GND
IC63
:
NJM78M05DL1A (TE1)
Voltage regulator
INPUT OUTPUT GND
1 3 2
5 4
GND
V
CC
IC68
:
TC7SH08FU
2-input AND gate IN A IN B
OUT Y
(U model)
8 ch DAC 2 ch ADC 2 ch DAC
SELECTOR
to
DIGI
T
AL 3/5
to
DIGI
T
AL 3/5
to
DIGI
T
AL 2/5
to
DIGI
T
AL 3/5
to OPERATION (2)_CB452
P
age 125
B3
to OPERATION (2)_CB455
P
age 125
D3
to GUI_CB503
P
age 131
F1
to OPERATION (2)_CB458
P
age 125
E3