NAD T 747, Service Manual

Page: 49 / 130

SCHEMATIC DIAGRAM (FRONT PART)
3-41 3-42
TO POWER TRANS.
FR
O
M
M
C
U
&
D
S
P PC
B
VFD_CS
VFD_CLK
VFD_DATA
A
C 5.
8V
A
C 5.
8V
40V
VFD_DATA
VFD_CLK
VFD_CS
VFD_RST
POWER_H
KEY_1
KEY_2
REMOTE_IN
HPR OUT
HPL OUT
T
O
V
ID
E
O
A
SS'Y
TO
I
N
P
U
T A
S
S
'Y
C_IN
Y_IN
FRONT_CVBS
FRONT_SC
FRONT_SY
FRONT RCH
FRONT LCH
PHONES & OPTICAL PCB
KEY_1
KEY_2
VOL_B
VOL_A
L
R
GAME
CVBS
S-VIDEO
GND
OP
T
IC
A
L I
N
PH
O
N
E
S
O
U
T
FR
O
M
A
M
P PC
B
VFD_RST
VFD PCB
GND
D+5V
ST+5V
GND GND
AC
X
X
V
ST
+5
V
ST+5V
+5V
+5V
+5V
GND
HIGH : BLUE ON
LOW : ORG ON
-7V
+7V
OPT_IN
CUP12126-1
CUP12126-4
CUP12126-5
CUP12126-6
CUP12126-7
D+5V
OPT_IN
DGND
MIC_IN
MIC_ON
D+5V
DGND
MIC_IN
MIC_ON
BN507 & CN507
R5157 : 10k ==> 27k
R5160 : 10k ==> 27k
40dB ==> 58dB
R5028
1K
R5029
1K
R5030
1K
2
13
46
57
81
0
91
1
12
14
13
15
16
17
18
19
20
21
CN
501
C5036
10/16V
C5041 0.1
R5041
47
C5042
1000P
C5043 1000P
C5044 1000P
C5037
10/
16V
R5035
4.7
R5044
47
R5043
47
R5042
47
R
5048 8.
2K
C5045
100/
16V
C5046
0.
1u
F
C5035
0.022
C5057
0.
022
C5058
0.
022
C5038
0.
047
L5057
10uH
C5047
0.
1u
F
C5001
1000P
C5033
100/
16V
R5033
4.7
5 4 3 2 1
CN502
C5034
150P
R
5034 47K
3 2 1
Vcc GND VOUT
RC501
R/C SENSOR
C5059
0.
022
R5059
1K
C5220
0.
1
54321
CN
522
C5215
470P
C5214
470P
C5219
0.
1
C5218
470/
10
RX
VCC
GND
OUT
3
2
1
JK522
4
3
2
1
BN
5
0
2
C5106
100P
C5107 100P
C5105
100P
R
5105
75
R
5026
100
C5023
0.
022
C5024
0.
022
R
5023
2.
7K
R
5024
2.
7K
VR502
VR ENCODER
R
5107 75
R
5106
75
R5101
470
R5102
470
R
5103 100K
R
5104
100K
C5104 100P
C5103
100P
5
4
3
2
1 BN
5
0
1
JW501
D5112
OPEN
C5111 OPEN
8
7
3
2
1
JK521
1
2
3
4
5
6
7
JK501
JK502
R5045
10
R
5047
10
14 13 12 11 10 9 8
7 6 5 4 3 2 1
IC501
HVITC74VHCT08FT
C5005
1000P
R
5005
1K
R
5008
2.
7K
R
5007 1.
8K
R
5006 1.
5K
S5007
RIGHT
S5008
ENTER
S5009
UP
S5010
DOWN
S5006
LEFT
14 13 12 11 10 9 8
7 6 5 4 3 2 1
IC522
HVITC74VHCT08FT
Q5033
KRC102M
C5217
0.
1
D5111 OPEN
R5111 OPEN
D5114
OPEN
C5113 OPEN
D5113 OPEN
R5113 OPEN
C5232 0.1
R5232 open
JW521
C5231 0.1
R5231 4.7
R5027
1K
D
5056 8.
2V
C5056 10/
50V
D
5044 Z2
7
V
D
5053 13V
C5055 47/
63V
C5053
47/
63
Q5051
C2316Y
D
5055
1N
4003
R
5051
47K
C5051
0.
01u
F
C5052
47/
63
R5053
1.2K
C5054
0.
01u
F
R
5054
100K
R
5052
100K
R
5055
3.
3
D5116
OPEN
C5115 OPEN
D5115
OPEN
R5115 OPEN
JW502
C5031
0.
1
C5060 47/
63V
61
F2 F2
62 58
VD
IS
P
DG
N
D
VD
D
F1
56 55 2
IC
54 53
LGND OS
C
O
RES
ET
CS
DO DA
CP
TE
S
T
NC IC F1
57 5 52 51 50 49 48 7 6 1
FIP51 CFLHCA16S201T
C5048
39P
O B
D5032
CVD1L0593A2B12MA402
Q
5032
K
R
A
102M
Q
5031
K
R
A
102M
R5031
680
R5032
560
C5032
0.
1
R
5001
1K
R
5004
2.
7K
R
5003 1.
8K
R
5002 1.
5K
S5012
MENU
S5003
SURROUND
S5005
SOURCE LIST >>
S5001
POWER
S5011
SOURCE LIST <<
R
5011 3.
3K
R
5012 5.
6K
3
2
1
B
N
508
3
2
1
CN
508CJ
P
0
3G
I236Z
W
R
5154
100K
(H
)
C5161
10/50V(H)
C5159 470P
(H
)
C5153
10/50V(H)
R5156
1K(H)
R5158
1K(H)
R5151
100(H)
R5152
100(H)
C5151
47/
25V
(H
)
C5152
47/
25V
(H
)
C5157
47P(H)
R5157
10K(H)
R5160
10K(H)
C5160
150P(H)
V+
B O
U
T
P
U
T
B-
IN
P
U
T
B+
IN
P
U
T
V-
A+
IN
P
U
T
A-
IN
P
U
T
A O
U
T
P
U
T
-
+
B
-+
A
8 7 6 5
4 3 2 1
IC521
R
5161
100K
(H
)
8
9
6
7
5
4
3
2
1
1
8
7
3
2
4
5
9
6
JK541
HJJ2E027Z
C5144 150P
(H
)
C5143 150P
(H
)
R
5144
47K
(H
)
R5142
470(H)
R5141
470(H)
R
5143
47K
(H
)
C5142
1000P
(H
)
C5141
1000P
(H
)
C5149
0.1uF(H)
R5149
4.7(H)
7654321
B
N
507
7654321
CN
507
CJ
P
0
7G
I236Z
W
R5009
4.7
JW522
5
4
3
2
1
1
2
3
4
5
B
N
512_1
CJ
P
0
5G
B
4
6Z
Y
5
4
3
2
1
1
2
3
4
5
B
N
512
CJ
P
0
5G
B
4
6Z
Y
Q5036
KRC102M
Q5037
KRC102M
12
R
5036
CR
D
2
0T
J103T
JW503
R5220
4.7
Q5201
C102S(H)
D
5201
1S
S
355(
H
)
C5203 0.
1u
F(
H
)
R5201
2.2K(H)
R
5202
1.
5K
(H
)
R
5203
10K
(H
)
5 6
4 3
8
1
7
2
RY521
CS
L4
A
016Z
U(
H
)
R5056
2.2
5 4 3 2 1
1 2 3 4 5
BN511 CWB05
R5204
1(1/4)
C5112 0.1
R5112 OPEN
OPTICAL_IN