NAD C 725BEE, Service Manual

Page: 23 / 50

DGND
C712
10n
C717
100u/16V
2
3
1
IC702
DGND
IR RECEIVER
V
S
G
+5.8V
FM-6038TM2-5AN
R740
10K
IR IN IR OUT
P102
57
P91
1
P90
2
CNVSS
3
P87/XCIN
4
P86/XCOUT
5
RESET
6
XOUT
7
VSS
8
XIN
9
VCC
10
P85/NMI
11
P84/INT2
12
P83/INT1
13
P82/INT0
14
P81
15
P80
16
P77
17
P76
18
P75
19
P74
20
P73
21
P72
22
RXD2/P71
23
TXD2/P70
24
TXD1/P67
25
RXD1/P66
26
P65
27
P64
28
P33
29
P32
30
P31
31
P30
32
TXD0/P63
33
RXD0/P62
34
P61
35
P60
36
P27
37
P26
38
P25
39
P24
40
P23
41
P22
42
SCL/P21
43
SDA/P20
44
P17
45
P16
46
P15
47
P03
48
P02
49
P01
50
P00
51
P107
52
P106
53
P105
54
P104
55
P103
56
P101
58
AVSS
59
P100
60
VREF
61
AVCC
62
P93
63
P92
64
IC703
M30281F6HP
+5.8V
DGND
R775100K
1
2
CZ707
CON2
C719
22UF/16V
R776
0R
1
2
CZ706
CON2
C721
0.1uF +5.8V
RESET
1
GND
2
RESET
3
VDD
5
MR
4
IC704
TPS3825-50DBVT
DGND
Y701
18.432 MHz
C722
20P C723
20P
DGND DGND
R774
1MEG
R773
33
DGND
A0
1
A1
2
A2
3
Vss
4
SDA
5
SCL
6
WP
7
Vdd
8
IC705
24C16
DGND
+5.8V
C720
0.1uF
DGND
R777
1K
R778
1K
+5.8V
1
2
3
4
5
6
7
8
CZ704
TO PREAMP SCH
DGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CZ702
TO PREAMP SCH
+5.8V +5.8V
R752
22K
+5.8V +3.3V
DGND DGND DGND DGND DGND DGND
+5.8V
DGND
DGND
M
P
REC OP
TUNER REC OP AUX REC OP TAPE REC OP VIDEO REC OP
C718
0.1u
AUX REC OP
Q706
C1815
M
P
REC OP
VIDEO REC OP CD REC OP TAPE REC OP
R727
4K7 R729
4K7 R731
4K7 R733
4K7 R735
4K7 R737
4K7
C710
10n
C711
10n
C713
10n
C714
10n
C715
10n
TUNER REC OP
C716
10n
CD REC OP
R738
4K7 R736
4K7 R734
4K7 R732
4K7 R730
4K7 R728
4K7
D715
BLUE
D714
BLUE
D713
BLUE
R722
2.2K
D712
BLUE
D711
BLUE
D710
BLUE
STR
1
D
2
CLK
3
OE
15
VCC
16
Q1
4
Q2
5
Q3
6
Q4
7
Q5
14
Q6
13
Q7
12
Q8
11
QS
9
QS
10
GND
8
IC707
CD4094
+12V
D716
1N4148
Q707
C1815 Q708
C1815 Q709
C1815 Q710
C1815 Q711
C1815
SPEAKER A SPEAKER B
SPEAKER B
SPEAKER A
SCL SDA
SDA
SCL
RS232 TXD
RS232 RXD
RS232 TXD RS232 RXD Ipod TXD
Ipod TXD
Ipod RXD
Ipod RXD
DAB RXD
DAB TXD
DAB TXD
DAB RXD
IP SEL DATA IP SEL STB OP SEL STB2 IP SEL CLK OP SEL CLK OP SEL DATA OP SEL STB1 Protect Red
DGND
+5.8V
R711
10k
R712
10k
R710
10K
R713
10K
C706
0.1uF C707
0.1uF
C708
0.1uF
C705
0.1uF
A
1
C
2
B
3
IC706
EC12E1220801-F20
+5.8V
ENCODE REC OUT 1 ENCODE REC OUT 2
ENCODE REC OUT 2 ENCODE REC OUT 1
S716
MP
S717
DISC
S718
CD
S711
AUX
S712
TAPE
S713
TUNER
S714
SpeakerA
S707
SpeakerB
S708
Preset down
S709
Preset up
S710
Tune down
S703
Tune up
S704
Display
S705
Memory
S706
Blend
S701
FM Mute/Mode
S702
TONE DEFEAT
P1 P2 P3 P4 P5 KEY1 KEY2 KEY3 KEY4
P1
P2
P3
P4
P5
KEY1
KEY2
KEY3
KEY4
DGND
R714
10K R715
10K R716
10K R749
10K
Stereo
Tuned
PLL CLK1
PLL D1
PLL D0
PLL CE
RDS CLK
RDS DATA
1
2
3
4
5
6
7
8
CZ701
CON8
To Ipod TXD
To Ipod RXD
To DAB RXD
To DAB TXD
Stereo Tuned PLL CLK1 PLL D0 PLL D1
PLL CE
RDS CLK
RDS DATA
VFD DA VFD CP VFD CS VFD RESET
VFD RESET
VFD CP
VFD CS
VFD DA
IR OUT
IR IN
OP SEL DATA
OP SEL CLK
OP SEL STB2
Unit Protect
+5.8V
+12V
DGND
+39V
VFD POWER1
VFD POWER2
MAIN MUTE
BAND
+5.8V
IP SEL STB
IP SEL DATA
IP SEL CLK
+5.8V
+5.8V
DGND
Power On Blue/Flash Power Standby Am
ber
Power Standby Am
ber
Power On Blue/Flash
F1
1
F2
69
16G
52
Q16
53
TSB
54
TSA
55
DA
56
CP
57
CS
58
RESET
59
OSC
60
VDD
61
VH
62
PGND
63
LGND
64
IC701
16-BT-130GINK
Q701
C1815
Q724
DTC114
R753
4K7 R754
4K7 R755
4K7
VFD POW
ER2
VFD POW
ER1
+39V
+5.8V
DGND
R781
33K
+5.8V
DGND
R779
10
R780
10
C734
0.1uF
DGND
C733
0.1uF
DGND
R784
10K
R782
100K R783
10K
Q731
C1815
DGND
+39V TO MAIN BOARD CB35
AGND
MP
D
E
T
MP
D
E
T
1 2 3
CZ705
G L R
C730
100p
C731
100p
C732
0.1uF
TP701
R767
N.I.
AGND
MP DOCK SEL
D702
1N4148 D703
1N4148 D704
1N4148 D705
1N4148 D701
1N4148
C703
0.1uF
C704
100uF/16V
DGND
DGND
M
P LED
MP LED
DGND
R794
4K7
R793
4K7
C739
10n
Q732
C1815
R795
2.2K
D718
1N4148
+12V
1
2
3
CZ709
+5.8V
1
2
3
CZ703
D719
BLUE
C725BEE MP BOARD
TONE DEFEAT
OP SEL CLK OP SEL DATA OP SEL STB1
+5.8V +3.3V
R760*
22K
+5.8V +3.3V
Q723*
C1815
Q703*
C1815
R759*
4K7 R758*
4K7 R757*
15K
+5.8V
R763 10
C724
10uF/16V
R764 10
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2OUT
7
R2IN
8
R2OUT
9
T2IN
10
T1IN
11
R1OUT
12
R1IN
13
T1OUT
14
GND
15
VCC
16
IC709
SP232EEP-L
C725 0.1uF/25V
C727 0.1uF/25V
C728 0.1uF/25V
C729
0.1uF/25V
DGND
DGND
R761 100
R762 100
C766
1nF
C767
1nF
DGND
+5.8V
+5.8V
DGND
1 2
3 4
5 6
7 8
9 10
11 12
13 14
CZ708 HEADER 7X2 2.54 pitch
CLK1
Busy
CNVss
CE
Reset
RS232 TXD
RS232 RXD
R701
47K
CE
CNVss
CLK1 Busy
Reset
+5.8V
+3.3V
R702
1k
D721
3.3V
DGND
R786
15k
R785
10k
Q702
C1815
DGND
Unit Protect
R703
4K7
1 2 3 4 5 6 7 8 9
R748
10K*8
1 2 3 4 5 6
CB710
CON6
DGND
KEY1
P1
P1
KEY1
R704
10K
D722
1N4148 D723
1N4148
1A
1B
1Y
2A
2B
2Y
GND 3Y
3A
3B
4Y
4A
4B
VCC
IC710
74HC86
+5.8V
R708
15K
C769
10uF/16V
DGND
R709
10K
+5.8V
DGND
+5.8V
C768
0.1uF
DGND
R791
N.I.
R787 N.I.
R788 N.I.
R789 N.I.
R790 N.I.
C770 N.I.
C771 N.I.
C772 N.I.
C773 N.I.
C774 N.I.
DGND
DGND
DGND
DGND
DGND
+5.8V
R705
10K
+5.8V
TONE DEFEAT MP DOCK SEL MAIN MUTE RECORD MUTE BAND
+5.8V
DGND
C775
0.1u
STR
1
D
2
CLK
3
OE
15
VCC
16
Q1
4
Q2
5
Q3
6
Q4
7
Q5
14
Q6
13
Q7
12
Q8
11
QS
9
QS
10
GND
8
IC711
CD4094
OP SEL CLK OP SEL STB1
RECORD MUTE
DGND
1
2
3
4
5
6
7
CZ711
TO POWER BOARD
DGND
+5.8V
STANDBY
Soft clipping
Soft clipping
Soft Clipping Detection
STANDBY
R718
220
R717
100
S715
ON/Standby
R744
220
C725BEE STANDBY Vc1.
0
1 2 3 4 5 6
CZ710
CON6
1
1
3
3
4
4
2
2
D707
3LED DGND
RED AMBER BLUE
Protect Red
R719 5.1k
D724
1N4148
C776
100uF/16V
R720
10k
R721
10k
R723
10k
Q734
C1815
+5.8V
DGND
Trans. Protect Det.
Trans.
Protect Det.
17VAC
Q733
DTC114
DGND
Q704
KSC2690
R765
1K
R766
1K5
+12V
R796
47
R797
47
R798
47
R799
47
R768
47
R769
47
R770
47
C777
47p
C778
47p
C779
47p
C780
47p
C781
47p
C782
47p
C783
47p
DGND
IP SEL STB OP SEL STB2 OP SEL CLK OP SEL DATA OP SEL STB1
DGND
C725BEE KEYBOARD
22K AH