A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
79
INPUT
SR-300/NS-BR300/NS-P705/NS-B380
SCHEMATIC DIAGRAMS
★
All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★
Components having special characteristics are marked
⚠
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● ⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがございます。
CB603
CB601
IC601
IC603
IC605
IC602
IC604
CB606
CB604
W1601
3.3
3.3
3.3
3.3
0
12.3
0
1.7
1.7
3.3
1.7
1.7
0
0
0
0
0
3.3
3.3
1.7
1.7
3.4
3.0
2.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.0
5.0
0
0
0.4
3.4
3.4
3.4
8.9
0.2
8.9
12.3
9.7
0
9.7
5.0
12.3
13.5
13.5
0
0
0
0
12.3
12.3
5.1
5.1
0
2.6
2.6
2.6
2.5
2.5
2.5
0
0
0
0
2.6
2.6
2.5
2.5
5.0
0
0
0
0
0
0
13.5
0
0
0
3.4
0
0
3.3
3.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
3.4
3.3
3.3
3.3
1.8
0.2
3.3
0
0
0
3.4
3.4
3.4
1.8
0
0
0
0
0
0
1.7
1.7
1.7
1.3
4.0
0
0
0
0
1.3
1.7
3.3
3.3
3.3
1.7
2.6
2.6
2.6
4.9
5.1
0
0
0
1.7
3.4
POINT
A XL601 (Pin 14 of IC603)
A
INPUT
OUTPUT
COMMON
3
1
2
IC605
: KIA78L05F-RTF/P
Three terminal positive voltage regulator
Z1
R1
R9
R1
0
R1
R1
1
R1
R3
Q2 Q7
Q8
R
Q6
C1
Q16
Q1
Q14
Q4
R2
R4
R1
2
R8
R7
R6
R5
R2
Z2
Q9
Q10
Q5
Q12
Q13
Q11
Q3
REFERENCE
VOLTAGE
CIN
FLOUT
VREF
VREF
ANTIALIASING
FILTER
57kHz
BPF
(SCF)
SMOOTHING
FILTER
MPXIN
+3V
Vdda
Vssa
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
+3V
Vddd
RDS-ID/
READY
RST
Vssd
DATA
DECODER
XOUT
XIN
TEST
TEST
CLK(4.332MHz)
OSC
RAM
(128bits)
RDDA
RDCL
RDS-ID
DETECT
MODE
IC603
LC72725KM-UY-TLM-E
RDS signal demodulation IC
CIN
TEST
Vssd
MODE
Vddd
XIN
XOUT
RST
RDCL
FLOUT
RDS-ID/READY
RDDA
VREF
MPXIN
Vdda
Vssa
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
IC601
: NJM2750M-TE2
4 input /1 output stereo audio selector
1
IN1a
IN2a
IN4a
IN1b
IN2b
IN4b
IN3b
IN3a
V+
(N.C.)
OUTb
OUTa
GND
Vref
CNT1
CNT2
2
3
4
LOGIC
V+
5
6
7
8
16
15
14
13
12
11
10
9
bias
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
IN
L
V
IN
R
V
REF
1
V
REF
2
V
CC
AGND
PDWN
BYPAS
TEST
LRCK
MODE1
MODE0
FMT1
FMT0
OSR
SCKI
V
DD
DGND
DOUT
BCK
IC604
: PCM1803DBR
Stereo A/D converter
BCK
VINL
Reference
VREF1
VREF2
VINR
Delta-Sigma
Modulator
Delta-Sigma
Modulator
x 1/64, x 1/128
Decimation
Filter
With
High-Pass Filter
Power Supply
AGND
VCC
VDD
DGND
Clock and Timing Control
Serial
Interface
Mode/
Format
Control
LRCK
DOUT
FMT0
FMT1
MODE0
MODE1
BYPAS
OSR
PDWN
SCKI
TEST
IC602
: TPS54331DR
3A, 28V input, STEP DPWN SWIFT
TM
DC/DC converter
with ECO-MODE
TM
ECO-MODE ™
Minimum Clamp
Error
Amplifier
Shutdown
Shutdown
Logic
Shutdown
Voltage
Reference
4
SS
6
COMP
5
VSENSE
3
EN
2
VIN
1 BOOT
8 PH
7 GND
∑
+
+
–
Discharge
Logic
Maximum
Clamp
S
Q
1.25V
Enable
Threshold
Enable
Comparator
Thermal
Shutdown
165C
Boot
UVLO
Boot
Charge
VSENSE
Slope
Compensation
Oscillator
12A/V
Current
Sense
PWM
Latch
PWM
Comparator
Frequency
Shift
gm = 92μA/V
DC gain = 800 V/V
BW = 2.7MHz
Gate
Logic
Drive
R
80m-ohms
2.1V
0.8V
2 μA
1 μA
2 μA
2 k-ohms
RDS
ANALOG INPUT
TV
No replacement part available.
サービス部品供給なし
(G, F models)
DOCK
AUDIO INPUT SELECTOR
LEGULATOR
ADC
to MAIN_CB310
Page 82
B8
to MAIN_CB305
Page 81
B6
to POWER (1)_CB705
Page 83
K4
To FM TUNER