NAD 375BEE C - Schematics Diagram Keyboard and Display

MP R P0.6 AUX CD P0.2 P2.1 TAPE2 P2.0 TAPE1 P0.5 TUNER P2.2 DISC P0.3 P0.4
TXD
+5VD
DGND
T1OUT
R1IN
RXD
SCL
SDA
RST
VOL-
VOL+
P1.2
P1.3
SCL
SDA
RST
RXD
TXD
IR OUT
IR IN
P3.6
P3.7
IR OUT
BRIDGE
VOL-
IR IN
P2.0
P2.1
P2.2
/EA
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.1
P0.0
+5VD
P2.3
P2.7
P2.6
P2.7
P2.6
P0.7
P2.4
P2.5
VOL+
EXTRA
R1IN
CD
MP F
TAPE2
TAPE1
DISC
MP R
PHONO EN
MM/MC
T1OUT
MUTE
+5VD
SP A
SP B
PROTECT
SCLED
TUNER
TONE
P2.3
P2.4
P2.5
+5VD
IR OUT
STBY
TP
TP
PROT
PHONO EN
P3.5
BRIDGE SCLED
P3.7
SCL
SDA
/EA
P1.3
IR IN
AUX+5VD
+5VD
SCL
P0.1
P3.5
AMBER
BLUE
RED
AMBER
BLUE
RED
EXTRA
PHONO
FLICKER
SP B
SP A
P1.2
P1.3
PHONO
P2.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P0.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
STBY
TONE
P0.5
PROTECT PROT
P3.7 MP F
P3.6
SP A SP B
MUTE
MM/MC
+5.6VD
FLICKER
P0.0
+12V
+5VD
+5.6VD +5VD
+5.6VD
+5VD
+5.6VD
+5VD
+5VD
+5VD
+12V
+8V
+26V
+8V
+5VD
+12V
+12V
+8V
SP A
SP B MP TUNER
AUX
CD DISC
All Polyester capacitors are 63V 5% unless noted.
All Elec. capacitors are 50V 20% unless noted.
All Resistor are 1/6W 5% RJ13 unless noted.
TO MAIN BOARD P205B
TO MAIN BOARD P201B
TAPE1TAPE2 TONE
TO TONE BOARD P302B
POWER
TO STANDBY BOARD P402B
IPOD INPUT
/1K V /1K V
/16V
Optional Reglator
/ 10V
Q530
2SA1015
Q530
2SA1015
D514
BL-BB52V1
D514
BL-BB52V1
Q546
2SC1815
Q546
2SC1815
IC506
N.I.
IC506
N.I.
O
3
I
1
G
2
D507
BL-BB52V1
D507
BL-BB52V1
C511
100nF
C511
100nF
Q543
2SC1815
Q543
2SC1815
P503A
CON2X10 MALE
P503A
CON2X10 MALE
1
5
3
6
2
4
7 8
9 10
11 12
13 14
15 16
17 18
19 20
Q531
2SA1015
Q531
2SA1015
R528
10K
R528
10K
+
C520
10uF
+
C520
10uF
R568
10K
R568
10K
R535
1K
R535
1K
C509
100nF
C509
100nF
R514
56
R514
56
R522
130
R522
130
R523
10K
R523
10K
R518
56
R518
56
D511
BL-BB52V1
D511
BL-BB52V1
R541
1K
R541
1K
D521 N.I.D521 N.I.
R501
10K
R501
10K
R511
1Kx8
R511
1Kx8
1 2
3
4
5
6
7
8
9
D515
BL-BB52V1
D515
BL-BB52V1
R547
1K
R547
1K
R571
4.7K
R571
4.7K
Q522
DTA114ESA
Q522
DTA114ESA
R531
56
R531
56
C510
100nF
C510
100nF
D536
1N4148
D536
1N4148
P502A
6PIN2.54-A60B
P502A
6PIN2.54-A60B
2
3
4
1
5
6
S502
IT-1102D-1160
S502
IT-1102D-1160
1 2
R532
56
R532
56
R504
10K
R504
10K
R546
4.7K
R546
4.7K
R527
10K
R527
10K
R530
56
R530
56
R545
1K
R545
1K
D506
BL-BB52V1
D506
BL-BB52V1
D537
N.I.
D537
N.I.
Q532
2SA1015
Q532
2SA1015
+
C516
N.I.
+
C516
N.I.
Q545
2SC1815
Q545
2SC1815
X501
11.0592MHZ
X501
11.0592MHZ
D544
1N4148
D544
1N4148
D548
1N4148
D548
1N4148
Q505
2SA1015
Q505
2SA1015
G501
GND-8
G501
GND-8
1
D533
1N4148
D533
1N4148
D529 N.I.D529 N.I.
R512
10K
R512
10K
C503
100nF
C503
100nF
R538
1K
R538
1K
R519
56
R519
56
R562
4.7K
R562
4.7K
D510
BL-BB52V1
D510
BL-BB52V1
D516
BL-BB52V1
D516
BL-BB52V1
+
C508
100uF
+
C508
100uF
R516
56
R516
56
C502 100nFC502 100nF
R510
1Kx8
R510
1Kx8
1 2
3
4
5
6
7
8
9
Q506
2SA1015
Q506
2SA1015
S506
IT-1102D-1160
S506
IT-1102D-1160
1 2
R563
4.7K
R563
4.7K
R550
4.7K
R550
4.7K
S507
IT-1102D-1160
S507
IT-1102D-1160
1 2
D525
N.I.
D525
N.I.
S501
IT-1102D-1160
S501
IT-1102D-1160
1 2
R502
1K
R502
1K
D512
BL-BB5B5201-B
D512
BL-BB5B5201-B
C501 100nFC501 100nF
R544
1K
R544
1K
R505
10K
R505
10K
C512
100nF
C512
100nF
Q541
2SC1815
Q541
2SC1815
S509
IT-1102D-1160
S509
IT-1102D-1160
1 2
R525
100
R525
100
D543
1N4148
D543
1N4148
C505
22pF
C505
22pF
Q547
2SC1815
Q547
2SC1815
Q529
2SA1015
Q529
2SA1015
C506
22pF
C506
22pF
R540
1K
R540
1K
R534
1K
R534
1K
R536
1K
R536
1K
R533
56
R533
56
R554
4.7K
R554
4.7K
R515
56
R515
56
Q509
2SA1015
Q509
2SA1015
R529
56
R529
56
S505
IT-1102D-1160
S505
IT-1102D-1160
1 2
R549
4.7K
R549
4.7K
R561
4.7K
R561
4.7K
D550
1N4007
D550
1N4007
D505
BL-BB52V1
D505
BL-BB52V1
Q533
2SD667
Q533
2SD667
D531
N.I.
D531
N.I.
Q528
2SA1015
Q528
2SA1015
R552
4.7K
R552
4.7K
D534
4.7V
D534
4.7V
R520
130
R520
130
D535
1N4148
D535
1N4148
R560
4.7K
R560
4.7K
S510
IT-1102D-1160
S510
IT-1102D-1160
1 2
D527 N.I.D527 N.I.
D545
1N4148
D545
1N4148
D526 N.I.D526 N.I.
D546
1N4148
D546
1N4148
R556
4.7K
R556
4.7K
R503
10K
R503
10K
D539
1N4148
D539
1N4148
D502
1N4148
D502
1N4148
R506
1K
R506
1K
R567
1K
R567
1K
R543
1K
R543
1K
+
C517
1000uF
+
C517
1000uF
D530
N.I.
D530
N.I.
Q544
2SC1815
Q544
2SC1815
Q540
2SC1815
Q540
2SC1815
R521
270
R521
270
Q536
2SC1815
Q536
2SC1815
S508
IT-1102D-1160
S508
IT-1102D-1160
1 2
R569
2.2K
R569
2.2K
S503
IT-1102D-1160
S503
IT-1102D-1160
1 2
Q539
2SC1815
Q539
2SC1815
R566
10
R566
10
C513
100nF
C513
100nF
S504
IT-1102D-1160
S504
IT-1102D-1160
1 2
Q524
DTA114ESA
Q524
DTA114ESA
+
C519
10uF
+
C519
10uF
R551
0
R551
0
R559
4.7K
R559
4.7K
R513
56
R513
56
R509
10K
R509
10K
R517
56
R517
56
Q549
2SC1815
Q549
2SC1815
+
C518
10uF
+
C518
10uF
Q508
2SA1015
Q508
2SA1015
R526
4.7K
R526
4.7K
D538
1N4148
D538
1N4148
D504
Three LED
D504
Three LED
2
1
3
4
C504
100nF
C504
100nF
D532
1N4148
D532
1N4148
D520 N.I.D520 N.I.
D517
1N4148
D517
1N4148
D542
1N4148
D542
1N4148
R557
4.7K
R557
4.7K
R572
4.7K
R572
4.7K
+
C521
N.I.
+
C521
N.I.
Q537
2SC1815
Q537
2SC1815
D523
N.I.
D523
N.I.
D509
BL-BB5B5201-B
D509
BL-BB5B5201-B
R570
4.7K
R570
4.7K
S511
IT-1102D-1160
S511
IT-1102D-1160
1 2
J501
PHONE JACK
J501
PHONE JACK
3
2
1
5
4
Q542
2SC1815
Q542
2SC1815
C514
100nF
C514
100nF
Q503
2SA1015
Q503
2SA1015
D547
1N4148
D547
1N4148
D503
1N4148
D503
1N4148
R542
1K
R542
1K
D508
BL-BB52V1
D508
BL-BB52V1
P504A
5PIN 2.54-760B
P504A
5PIN 2.54-760B
2
3
4
1
5
IC504
IS1U60L
IC504
IS1U60L
3
V
2
G
1
S
4
G
5
G
R507
10K
R507
10K
IC503
AT89S52-24PU
IC503
AT89S52-24PU
P1.0/T2
1
P1.1/T2EX
2
P1.2
3
P1.3
4
P1.4
5
P1.5/MOSI
6
P1.6/MISO
7
P1.7/SCK
8
P3.0/RXD
10
P3.1/TXD
11
EA/VPP
31
ALE/PROG
30
P3.2/INT0
12
P3.5/T1
15
P3.4/T0
14
P3.3/INT1
13
P3.6/WR
16
RST
9
P0.0/AD0
39
P0.1/AD1
38
P0.2/AD2
37
P0.3/AD3
36
P0.4/AD4
35
P0.5/AD5
34
P0.6/AD6
33
P0.7/AD7
32
PSEN
29
P2.6/A14
27
P2.5/A13
26
P2.4/A12
25
P2.3/A11
24
P2.2/A10
23
P2.1/A9
22
P2.7/A15
28
P3.7/RD
17
P2.0/A8
21
GND
20
XTAL1
19
VCC
40
XTAL2
18
D522 N.I.D522 N.I.
Q523
DTA114ESA
Q523
DTA114ESA
Q504
2SA1015
Q504
2SA1015
Q525
DTC114ESA
Q525
DTC114ESA
R564
4.7K
R564
4.7K
Q534
2SC1815
Q534
2SC1815
Q502
2SC1815
Q502
2SC1815
R555
4.7K
R555
4.7K
P501A
10PIN2.54-A240B
P501A
10PIN2.54-A240B
2
3
4
1
5
6
7
8
9
10
IC502
CAT1021LI-42
IC502
CAT1021LI-42
/RST
2
SCL
6
Vcc
8
NC
1
GND
4
RST
7
SDA
5
WP
3
Q510
2SA1015
Q510
2SA1015
R548
1K
R548
1K
D549
1N4148
D549
1N4148
R539
1K
R539
1K
C507
10nF
C507
10nF
R537
1K
R537
1K
C515
N.I.
C515
N.I.
D519
N.I.
D519
N.I.
D518
1N4148
D518
1N4148
IC501
SP232EEP
IC501
SP232EEP
C1+
1
V+
2
C1-
3
C2+
4
C2-
5
V-
6
T2OUT
7
R2IN
8
VCC
16
R2OUT
9
T2IN
10
T1IN
11
R1OUT
12
R1IN
13
T1OUT
14
GND
15
R508
10K
R508
10K
IC505
74HC4094
IC505
74HC4094
STR
1
D
2
CLK
3
OE
15
Q1
4
Q2
5
Q3
6
Q4
7
Q5
14
Q6
13
Q7
12
Q8
11
QS
9
QS
10
VDD
16
VSS
8
D513
BL-BB52V1
D513
BL-BB52V1
D528 N.I.D528 N.I.
Q538
2SC1815
Q538
2SC1815
R558
4.7K
R558
4.7K
D540
1N4148
D540
1N4148
Q507
2SA1015
Q507
2SA1015
R565
10
R565
10
D501
1N4007
D501
1N4007
D524
N.I.
D524
N.I.
D541
1N4148
D541
1N4148
Q535
2SC1815
Q535
2SC1815
Q548
2SC1815
Q548
2SC1815
Q551
2SC1815
Q551
2SC1815
Q550
2SC1815
Q550
2SC1815
R553
4.7K
R553
4.7K
R524
N.I.
R524
N.I.
- 14 -
SCHEMATICS DIAGRAM KEYBOARD AND DISPLAY