Schematic Diagram - Yamaha CRX-E300 Service Manual

A B
SCHEMATIC DIAGRAM (INPUT)
1
to FLASH WRITER
T CHINA
L SINGAPORE
K KOREAN
2
3
4
5
MD
6
7
INPUT SELECTOR
Point 1 Pin 12 of IC307
8
9
C D E
# All voltage are measured with a 10MΩ/V DC electric volt meter.
# Components having special characteristics are marked s and must be
replaced with parts having specifications equal to those originally
installed.
# Schematic diagram is subject to change without notice.
Page 48 D9 Page 48 C9
to OPERATION to OPERATION
5.0 4.8
4.8
5.0 4.9
4.5
4.8
4.9
5.0
4.8
4.9
0.1
4.8
0
0
0
0.1
2.3
2.2 1.6 1.6 2.7
2.2 1.1 1.1 2.2
2.2 1.8 1.8 2.7
4.9 4.9 4.9 -11.8
0 0 0 4.9
4.9 4.9 4.9 4.9
0 0
0 0
0 0
0
0
12.1
30 29 28 27 25 24 22 21
5 8
7
26 23 20
0
6
0
0
0
0 2
0 0 1
5 8 11 3 0
0
4
1 2 3 4 6 7 9 10
-11.8
0
0 0 0
0 0 0 0
12.1
0
-11.8
0
4.8
0
F G
12.1
5 0
4
7
6
0
0
0
0 CD
4.9 4.9
0
0
0
0
4.9
4.9 0
6
0
7 0
5
0
8
0
MUTING -11.8
RDS model only
1
0 0 4.8 4.8 0.2 0 5.0 2.4
11.5
2.5 2.5 4.9 0 2.5 2.5 0 0
2.6
0.5
0
RDS DRIVE
0
0
5.0 12.1
0
H I J
IC303: TC74HC4051AP
Analog Multiplexer/Demultiplexer
INHIBIT VDD
6 16
A 11
LEVEL
B 10
CONVERTER
C 9
VSS 8
VEE 7
X0 13
X1 14
X2
15
X3 12
X4
1
X5 5
X6 2
X7
4
IC307: LC72722
RDS Decoder
VDDA 3
REFERENCE
VOLTAGE
VSSA 4
ANTIALIASING
MPX IN
2
DO
20
CL 21
DI 22
CE
23
T1 7
T2
8
x: NOT USED
T3 9
O: USED / APPLICABLE
T4 10
OPERATION KEY
Page 48 A9
Page 50 H8 to INPUT (3)
to OPERATION
to MAIN (1)
Page 50 B8
to MAIN (1)
MOTOR
DRIVE
TONE
CONTROL
12.1
0.1 5
8
7
6
0
0
VOLUME
2
1
0.1
3 0
4
0.1
-11.8
to INPUT (2)
K L
CRX-E300
INPUT STATES
BINARY TO 1-OF-8 "ON" CHANNEL (S)
C B A
INHIBIT
DECODER WITH INHIBIT
0 0 0 0 0
0 0 0 1 1
0 0 1 0 2
SW
0 0 1 1 3
SW
0 1 0 0 4
SW 0 1 0 1 5
SW 3 X 0 1 1 0 6
0 1 1 1 7
SW
1 X X X NONE
SW
SW
SW
IC304, 306, 751: NJM2068D-D
Dual OP-Amp.
1 2 3 4 5 6 7 8
1 5 6
CLOCK 14 VDDD
+ PLL
RECOVERY
(57kHz)
(1187.5Hz)
15 VSSD
VREF
57kHz
SMOOTHING DATA
bpf 19 RDS-ID
FILTER FILTER DECODER
(SCF)
18 SYNC
RAM ERROR CORRECTION SYNC/EC
CCB (24 BLOCK DATA) (SOFT DECISION) CONTROLLER
24 SYR
CLK(4.332MHz)
MEMORY
CONTROL
TEST SYNC SYNC
DETECT-1 DETECT-2
OSC/DIVIDER
11 16 17 13 12
IC305: LC78211
Analog Function Switch
1 30
L1 R1
2 29
L2 R2
L3 3 28 R3
L4 4 27 R4
5 26
LCOM1 RCOM1
L5 6 25 R5
L6 7 24 R6
LCOM2 8 23 RCOM2
L7 9 22 R7
L8 10 21 R8
11 20 RCOM3
LCOM3
V 19 LEVEL SHIFTER
DD
V SS 16
14
LATCH ZZ D1
12
V EE
15 CL
18 ZZ
RES
SHIFT REGISTER
S 17 13 CE
ZZ
IC309: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
IC752: LB1641
Motor Driver
3 2 8 10 9 7
4 VZ
IN 1 5 INPUT LOGIC 6 IN 2
GND 1
PIN CONNECTION DIAGRAM OF TRANSISTORS,
DIODES AND ICS.
2SC2878 2SC1740S 1SS133 NJM78L05A-T3
DTA114ES HZS5C1
Anode
3: OUT
Cathode
E E
C B 2: GND
C B 1: IN
NJM2068D-D LB1641 TC74HC4051AP
10
8
8 4
16
1
1 1
BU2092 LC72722 LC78211
15
12
9
24
18 30
1 1
1
47