NAD T748 - Page 48

FROM POWER TRANS
VFD_CS
VFD_CLK
VFD_DATA
AC 5.8V AC 5.8V
40V
VFD_DATA
VFD_CLK
VFD_CS
VFD_RST
KEY_2
REMOTE_IN
VFD_RST
GND GND
AC XXV
ST+5V
+5VD_SYS
HP_IN
KEY2
VOL_DOWN
KEY1
STBY+5R6V
KEY_1
VOL_UP
+5VD_SYS
GND
ESD
FROM MCU B'D
POWER_ON
GND
HIGH : BLUE ON
LOW : ORG ON
HPR OUT
HPL OUT
TO VIDEO PCB
TO INPUT PCB
C_IN
Y_IN
FRONT_CVBS
FRONT_SC
FRONT_SY
FRONT RCH FRONT LCH
MIC & OPTICAL PCB
LCH
RCH
CVBS
S-VIDEO
OPTICAL IN
H/P IN
FROM AMP PCB
GND
+5V
+5V
GND
D+5V
OPT_IN
DGND
MIC_IN
MIC_ON
R5157 : 10k ==> 27k
R5160 : 10k ==> 27k
40dB ==> 58dB
GND
GND
MIC IN
OPT_IN
D+5V
DGND
MIC_IN
MIC_ON
MIC_IN
MIC_ON
FRONT PCB
AUDIO & VIDEO PCB
HEADPHONE PCB
A+12V
DNGADNGA
A+12V
AGND
A-12V
HP_IN
GND
HP_IN
GND
OPT_IN
DGND
-12V
AGND
+12V
GND
AGND
A-12V
FL FR
CNT
SW SL SR
BSL BSR
ZONE2 L ZONE2 R
PROTECT_IN
F SPK ON S SPK ON
BS SPK ON
HP RL ON
MCUGND
ST 5R6V
+12V
IPOD_RX
REMOTE_IN
RS232 TX RS232 RX
ST 5R6V
REMOTE_IN
IR OUT
MCUGND
-12V
FAN_DET
TO AMP B'D
FROM INPUT B'D
GUIDE PCB(INPUT<-->AMP)
CUP12370Z-6
-12V
+12V ST 5R6V FAN_DET
IPOD_TX
IPOD_RX
IPOD_TX
MCUGND
STANDBY : ORANGE
POWER ON : BLUE
CUP12370Z-1
CUP12370Z-2
CUP12370Z-3
CUP12370Z-4
CUP12370Z-5
FROM RS232C B'D
GOLD CHANGE
OPEN
ADD
OPEN
R5028
1K
R5029
1K
R5030
1K
C5041 0.1
R5041
47
C5042
1000P
C5043 1000P
C5044 1000P
C5037
10/16V
R5035
4.7
R5044
47
R5043
47
R5042
47
R5048
8.2K
C5045
100/16V
C5046
0.1
C5035
0.1
C9027
0.1
C5058
0.1
C5038
0.1
C5047
0.1
C5033
100/16V
R5033
4.7
12345
CN502
C5034
100P
R5034
OPEN
321
VccGND
VOUT
RC501
R/C SENSOR
R5026
100
C5023 0.022 C5024 0.022
R5023
2.7K
R5024
2.7K
VR502
R5045
10
R5047
10
C5005 1000P
R5027
1K
D5056
8.2V
C5056
10/50V
D5044
27V
D5053
15V
C5061
OPEN
Q5051
KTC1027Y
D5055
1N4003
R5051
47K
C5051
0.01
C5052
47/63V
R5053
1.2K
C5054
0.01
R5054
100K
R5052
100K
R5055
3.3 1%
61
F2 F2
62 58
VDISP DGND
VDD
F1
56 55 2
IC
54 53
LGND
OSCO
RESET
CS
DO
DA CP
TEST
NC
IC F1
57 552 51 50 49 48 7 16
FIP51
VFD DISPLAY
C5048
39P
R5056
3.3 1%
20
2123
22
19
18 16
17 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN501
14 13 12 11 10 9 8
7654321
IC501
TC74HCT7007F
C5001 1000P
D5116
1SS133
C5115 0.1
D5115
1SS133
R5115 4.7
JW502
C5055
47/63V
Q5001
KRA102M
D5057
1SS133
C5060
47/63V
C5053
47/63V
R5005 1K 1%
R5008
2.7K 1%
R5007
1.8K 1%
R5006
1.5K 1%
S5007
ENTER
S5008
RIGHT
S5009
UP
S5010
DOWN
S5006
LEFT
R5001 1K 1%
R5004
2.7K 1%
R5003
1.8K 1%
R5002
1.5K 1%
S5012
MENU
S5003
SURROUND
S5005
SOURCE >>
S5011
SOURCE <<
R5011
3.3K 1%
R5012
5.6K 1%
Q5033
KRC102M
C5031
0.1
OB
D5032
2 COLOR LED
Q5032
KRA102M
Q5031
KRA102M
R5031
680
R5032
560
C5032
0.1
S5001
POWER
54321
BN512_1
Q5036
KRC102M
Q5037
KRC102M
R5036
10K
C5220
0.1
C5215
470P
C5214
470P
C5219
0.1
C5218
470/10V
RX
VCC
GND
OUT
321
JK522
C5106
68P
C5107
68P
C5105
68P
R5105
75
R5107
75
R5106
75
R5101
470
R5102
470
R5103
100K
R5104 100K C5104
100P
C5103
100P
54321
BN501
JW501
D5112
1SS133
C5111 0.1
8
7
3
2
1
JK521
JK501
JK502
14 13 12 11 10 9 8
7654321
IC522
OPEN
C5217
0.1
D5111
1SS133
R5111 4.7
D5114
OPEN
C5113 OPEN
D5113
OPEN
R5113 OPEN
C5232 0.1
R5232 OPEN
JW521
C5231 0.1
R5231 4.7
R5154
100K
C5161
10/50V
C5159
470P
C5153
10/50V
R5156
1K
R5158
1K
R5151
100
R5152
100
C5151
47/25V
C5152 47/25V
C5157
47P
R5157
10K
R5160
10K
C5160
150P
V+
B OUTPUT
B-INPUT
B+INPUT
V-
A+INPUT
A-INPUT
A OUTPUT
-+
B
-+
A
8765
4321
IC521
NJM2068M
R5161
100K
8
9
6
7
5
4
3
2
1
JK541
C5144
150P
C5143
150P
R5144
47K
R5142
470
R5141
470
R5143
47K
C5142
1000P
C5141
1000P
C5149
0.1
R5149
4.7
JW522
JW503
R5220
4.7
Q5201
KRC102S
D5201
1SS355
C5203
0.1
R5201
2.2K
R5202
1.5K
R5203
10K
56
43
8
1
7
2
RY521
MIC RELAY
1234567
BN511
R5204
1
(1/4W)
C5112 0.1
R5112 4.7
R5009
4.7
C5059
0.022
R5059
1K
123456789
CN507
1 23
CN503
1 23
BN503
123
CN522
12
CN508
12
BN508
123456789
BN507
987654321
CN414
1
2
4
35
6
7
8
9
10
11
12
14
13
16
1517
18
28
27 25
26
23
24 22
21
20
19
29
30
CN420
32
31
34
3329
30
27
28
17
18
19
20
21
22 24
23 25
26
16
15
13
14
12
11
10
9
8
7
6
53
4
1
2
CN161
R5010
3.3K 1%
D5122
1SS355
C5121
0.1
D5121
1SS355
R5121
4.7
54321
BN512
PREOUT_FL PREOUT_CNT PREOUT_FR PREOUT_SW PREOUT_SL PREOUT_SR PREOUT_BSL PREOUT_BSR MULTI_PRE_L
RS232_TX
RS232_RX
MCUGND MCUGND HP_RL_ON BS_SKP_ON S_SPK_ON F_SPK_ON PROTECT_IN
MULTI_PRE_R
SCHEMATIC DIAGRAM (FRONT PART)
2-40 2-41