Circuit Diagrams; Schematic Diagrams - Yamaha NS-BP300 Service Manual

A B C

SCHEMATIC DIAGRAMS

FUNCTION 1/3
1
2
A
(B, G models)
5.3
5.4
RDS
IC301
5.3
1.4
0.8
3
(A, B models)
CB303
Page 70 C5
to DAB_CB902
(A, B models)
4
0.3
0.3
5
0.2
5.0
To FM TUNER 0
1.4
0
9.1
3.3
0
6
PLAYER
0 0
CD IN
0 0
AUDIO IN
0 0
0 0
AUX
7
iPod IN
0 0
Page 64 I5
8 0 0 0
0
to FUNCTION (2)_W701
0
CB301
SW OUT
-6.8
0
9
OUTPUT
SUBWOOFER
0
-6.8
0
0 0
0 0
10
D E F
POINT A XL301 (Pin 14 of IC301)
9.1
5.4
0
IC304
INPUT SELECTOR
IC302
IC304
7.0
0
IC305
0 0
0 0
IC305
0
-6.8
LME49723MAX/NOPB
7.0
0
IC306
0 0 0
0
0
0
0
0
0 IC306
0 0
LME49723MAX/NOPB
-6.8
7.0
0
0 0
IC310
0
0
0
0
0
0
0 IC310 0
-6.8
0
7.0
0
0 IC307
0
0 0
IC307
0
-6.8
0 7.0
IC309 0
0
IC309
0
0
G H I
FUNCTION (1)
OUT L
SELECTOR/
VOLUME/
IC303
TONE CONTROL/
BUFFER
7.0 6.4
7.0
0
-6.8 -6.8
0
0
-6.8 -6.8
0
-6.9
-6.9 -6.3
J K L
IC301: LC72725KM-UY-TLM-E
RDS signal demodulation IC
+3V
Vdda
REFERENCE
VOLTAGE
Vssa
MPXIN ANTIALIASING
TEST
IC303: NJW1194V
2-channel electronic volume input selector and tone control
Ach Tone Filter
V+ GND V-
Bias
InA1
InA2
InA3
InA4
TONE
InB1
InB2
InB3
TONE
InB4
Bch Tone Filter
0
0
14.2
0
0
0
Page 66 B2
0
IC304, 305, 307, 310: NJM2068MD-TE2
0
to MAIN (1)_CB502
Dual operational amplifier
9.0
-6.9
0
0
OUT 1 1 8 +V
CB305
–IN OUT
1 2 7
+ – + –
+IN 1 3 6 -IN
–V CC 4 5 +IN
IC308: BA15218F
Dual high slew rate, low noise operational amplifier
6.4
OUT1 1 8
0
IC308
0
0 0
– IN1 2 7
1ch
0 – +
0
2ch
+ IN1 3 6
0 + –
0
0 W301 V 4 5
EE
0
0 0
Page 69 B7
IC308
0
-6.3 to MAIN (5)_CB53
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
M N
R-840/NS-BP300
VREF FLOUT CIN
+3V
CLOCK Vddd
PLL
RECOVERY
(57kHz)
(1187.5Hz)
Vssd
VREF
57kHz
BPF
SMOOTHING DATA RDDA
FILTER (SCF) FILTER DECODER
RDCL
RAM
MODE
(128bits)
RST
CLK(4.332MHz)
RDS-ID RDS-ID/
TEST
DETECT READY
OSC
XIN XOUT
RDS-ID/READY 1 16 RDCL
RDDA 2 15 RST
VREF 3 14 XOUT
MPXIN 4 13
XIN
Vdda 5 12 Vddd
Vssa 6 11 Vssd
FLOUT 7 10 MODE
CIN 8 9 TEST
IC302: NJM2752RB0
2-input/1-output stereo audio selector
5
LOGIC CNT1
IN1A 2 1 OUTA
9
IN1B
IN2A 4
10 OUTB
IN2B 7
3
V +
Vref 6 Vref
8
GND
V-
Control Logic
Zero Cross Detection
InA1 1 32 InB1
OutA InA2 2 31 InB2
InB3
InA3 3 30
InA4 4 29 InB4
GND 5 28 GND
DCCAP_A 6 27 DCCAP_B
OutB
GND 7 26 GND
OutA 8 25 OutB
VDDOUT ADR1
9 24
DATA 10 23 ADR0
DLOCK 11 22 V+
LATCH 12 21 V-
GND 13 20 GND
Tone_Tra
14 19 Tone_Tr1b
Tone_Ba1a Tone_Ba1b
15 18
Tone_Ba2a 16 17 Tone_Ba2b
IC306: LME49723MAX/NOPB
Dual high fidelity audio operational amplifier
CC
OUTPUT A 1 8 V+
2
2 INVERTING INPUT A 2 7 OUTPUT B
A B
2
- + + -
NON-INVERTING
3 6 INVERTING INPUT B
INPUT A
NON-INVERTING
V- 4 5
INPUT B
IC309: NJM4580E
Dual operational amplifier
V+
V 8
CC
OUT2
2, 6 1, 7 OUTPUT
–INPUT
+INPUT
– IN2 3, 5
+ IN2
V–
4
and must be replaced
63