NAD C316BEE, Service Manual, Page: 15 / 34

PHONE5
MP IN
C508
100pF
C509
100pF
1
2
3
CZ54
MP Input
S502 S503 S505 S501 S506 S504
D504 D505 D507 D503 D506 D508
R509
10K
R510
10K
DISC TAPE AUX CD VIDEO TUNER
D502
MP
+5V
TAPE VIDEO AUX TUNER CD DISC/MP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CZ53
+5V
R519
620
C502
0.1uF
+5V
IC503
HS0038B4
V
S
G
C510
0.1uF
IR receiver
C504
27P
C505
27P
X501
11.0592MHz
R508
10K
Remote Mute
Volume-
NC
1
NC
2
NC
3
Vss
4
SDA
5
SCL
6
NC
7
Vcc
8
IC502
24C01 C506
0.1uF
R507
10K
R502
10K
+5V
P1.0
1
RST
9
RXD/P3.0
10
TXD/P3.1
11
INT0/P3.2
12
INT1/P3.3
13
T0/P3.4
14
T1/P3.5
15
WR/P3.6
16
RD/P3.7
17
XTAL2
18
XTAL1
19
VSS
20
P2.0/A8
21
P2.1/A9
22
P2.2/A10
23
P2.3/A11
24
P2.4/A12
25
P2.5/A13
26
P2.6/A14
27
P2.7/A15
28
PSEN
29
ALE
30
EA
31
P0.7/AD7
32
P0.6/AD6
33
P0.5/AD5
34
P0.4/AD4
35
P0.3/AD3
36
P0.2/AD2
37
P0.1/AD1
38
P0.0/AD0
39
VDD
40
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
IC501
W78E052DDG
Record Mute
Q
11
9
2S
A
10
15
R186
100K
-18V
R184
10K
R185
10K
+5V
R
30
6
1K
R301
10K
R303
10K
R302
1K
R304
1K
R
30
5
1K
C302
4u7/25V
C303
4u7/25V
Q303
C1815
Q301
A1015
Q304
C1815
Q302
A1015
+5V
C304
220p
C305
220p
C301
10uF
C507
0.1uF
+5V
+5V
Q219
2SA1015
R286
100K
-18V
R284
10K
R285
10K
+5V
R501
10K
+5V
C501
10uF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CB53
Inputs Selection
+5V
R513
10K
R503
10K
Q501
2SC1815
R505
47K
+5V
R504 100K
R514
10K
R515
10K
R516
10K
R517
2K2
Q502
C1815
S507
TACT SWITCH
C511
0.1uF
R
em
ot
e
m
ut
e
R
ec
or
d
m
ut
e
IR IN
V
ol
um
e-
V
ol
um
e+
Standby
S
tandby
P
rot
ec
tion
Protection
Volume-
Remote Mute
Record Mute
Protection
Standby
IP
S
E
L
S
T
B
IP
S
E
L
C
L
K
IP
S
E
L
D
A
T
A
G
N
D
+
5V
Name
C315BEE Main Board
+5V
D509
1N4148
L51
100uH
D
114
1N
4148
D
214
1N
4148
Main Board
C512
0.1uF
SCHEMATICS DIAGRAM
PCB-1:MAIN BOARD Vm1.0
MCU CONTROL CIRCUIT Vm1.0
PCB:STANDBY BOARD Vm1.0
PCB-6:KEY BOARD Vm1.0
KEY CIRCUIT Vm1.0
R522
220
R521
470
Q504
DTC114
Q503
DTC114
R524
330
1
1
3
3
4
4
2
2
D501
3LED
Blue
Red
Amber
Q506
DTC114
Q505
DTC114
Q508
DTC114
+5V
1 2 3 4 5
CB52
1 2 3 4 5
CZ52
S
T
A
N
D
B
Y
+5V
R511
470
R512
470
Q507
DTA114
STANDBY Circuit Vm1.0