Yamaha RX-SL80, Service Manual

Page: 60 / 82

A B C D E F G H
1
2
3
4
5
6
I J K L M N O
7
8
9
10
60
RX-SL80
x: NOT USED
O:USED / APPLICABLE
+
–
1
2
3
4
5
6
7
14
13
12
11
10
9
8
IC405: BD3812F-E2
Audio Sound Processor
OUT1
OUT2
SEL
DGND
MUTE
DA
CL
IN1
AGND1
IN2
AGND2
VEE
AGND3
VCC
LOGIC
+
–
IC406, 407, 419: TC74HC4053AF
Analog Multiplexer/Demultiplexer
16
VDD
6
INHIBIT
11
15
14
9
A
C
B
8
VSS
7
VEE
12 0X
13
1X
2
0Y
1
1Y
5
0Z
3 1Z
LEVEL
CONVERTER
10
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
4
Z-COM
X-COM
Y-COM
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
INPUT
OUTPUT
GND
IC414: NJM78M05DL1A
Voltage Regulator IC413: NJM79M12DL1A
IC415: NJM79M05DL1A
Voltage Regulator
COMMON
OUTPUT
INPUT
+
–
+
–
1 2
3
V
OUT
5
ON/OFF
4
Oadj
V
IN
V
REF
COM
Voltage
regulator
Over current
protection
circuit
Over heat
protection
circuit
ON/OFF
circuit
Soft
start
Oscillator
ERROR AMP.
PWM COMP.
F/F
Q
S
R
IC416: PQ1CG21H2F
Voltage Regulator
IC417: PQ025EN5MZPH
Voltage Regulator
1
Vin
3
Vo
2 Vc
5
GND
IC418:
µ
PC29M33T-E1
Voltage Regulator
3
OUTPUT
1 INPUT
2 GND
Safety Drive
Limiter
Excessive Electric
Current Protection
Sudden Current
Protection
Starter Circuit
Driver
Standard Voltage
Overheat Protection
Amp.
INPUT
OUTPUT
COMMON
IC412: NJM78M12FA
Voltage Regulator
P
age 64
to PO
WER (7)
C3
P
a
ge 64
to PO
WER (8)
C5
P
age 64
to PO
WER (12)
D7
P
a
ge 64
to PO
WER (9)
C8
P
age 63
to PO
WER (5)
D7
Page 64
to POWER (10)
G2 Page 64
to POWER (11)
K2
Page 59
to DIGITAL
G1 Page 63
to POWER (4)
J8 Page 59
to DIGITAL
C1
P
age 62
to Main
T
ransf
or
mer
M4
1
2
3
4
24
5
23
6
22
7
21
8
20
9
19
18
17
16
15 10
14 11
13 12
LOGIC
IC401: BD3842FS-E2
Function Switch
IC402: BA15218F
IC408, 409:
µ
PC4570G2
IC411: NJM2068MD-TE2
Dual OP-Amp.
– +
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4
5
+IN
1
–IN
2
+IN
2
– +
6
7
8
43
44
45
46
47
48
49
50
51
52
53
54
55
56
28
27
26
25
24
23
22
21
20
19
18
17
16
15
42 41 40 39 38 37 36 35 34 33 32 31 30 29
1 2 3 4 5 6 7 8 9 10 11 12 13 14
IC403: BD3815KS
Audio Sound Processor
GOUTFL VINFL GOUTFR VINFR TNFR TNFL BNF1R BNF2R BNF1L BNF2L GND10 OUTFR GND9 OUTFL
GND8
OUTSW
GND7
OUTSR
GND6
OUTSL
GND5
OUTC
GND4
OUTSB
VCC
GND3
VEE
VDD
INFRA
INFLA
INSWA
INSRA
INSLA
INCA
INSBA
INFRB
INFLB
INSWB
INSRB
INSLB
INCB
INSBB
GND1
GOUTSW
VINSW
GOUTC
VINC
GOUTRR
VINRR
GOUTRL
VINRL
GND2
PORTA PORTB
DA CL
TONE
A
SW1
B
A
B
LOGIC
A
B
A
B
A
B
A
B
A
B
A
B
A
B
+
–
+
–
+
–
+
–
+
–
+
–
+
–
SW2
A
B
SW3
+
–
+
–
+
–
+
–
+
–
+
–
IC404: LC72722PM
RDS Signal Processor
REFERENCE
VOLTAGE
57 kHz
bpf
(SCF)
CCB
TEST
PLL
(57 kHz)
ANTIALIASING
FILTER
SMOOTHING
FILTER
RAM
(24 BLOCK DATA)
ERROR CORRECTION
(SOFT DECISION)
SYNC / EC
CONTROLLER
SYNC
DETECT-1
DATA
DECODER
CLOCK
RECOVERY
(1187.5 Hz)
MEMORY
CONTROL
OSC/DIVIDER
VREF
CLK (4.332 MHz)
SYNC
DETECT-2
VDDA
VSSD
VDDD
RDS-ID
SYNC
SYR
VSSA
MPX IN
DO
CL
DI
CE
T1
T2
T3
T4
T5 T6 T7
X IN
VREF FL OUT C IN
X OUT
3 14
15
19
18
24
1 5 6
4
2
20
21
22
23
7
8
9
10
11 16 17 13 12
P
age 62
or
M6
P
a
ge 61 to MAIN (4)
L8
4
FRONT L
FRONT L
SURROUND L
CENTER
AC 30.6
AC 5.9
AC 11.0
-19.5
-0.1
0
18.8
-0.1
-0.1
0 12.5
6.2
6.2
18.8
0
0
0
11.9
-15.0 -12.0
18.2
0
0
0
5.0
0
2.5
2.5 4.7
3.3
0
3.3
0
4.7
4.7
0
4.9
-18.8
12.5 5.0 0 1.2 12.5
4.7 4.2 2.5 0 0
-5.0
-11.9 5.6
0
0
0
0
0
0 0
0
0
0
0 0
0
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0
0
-11.3
-11.3
11.1
0
0
11.1
0
0
0
0
0
11.1
4.8
-11.6
0
-11.3
5.7
0 0
0 0 0 5.6
0 0 0
0
-5.7
0
5.6
0 0 0
0
-5.7
-5.7
5.6
0
0
0
5.6
0
12.0 7.0
-12.2 -7.0
7.7
-7.7
-7.7
0
7.7
2.5
0
2.5
0
0
0
4.9
2.5
0
4.8
0
0
0
0
5.0
11.8
10.3
10.3
11.8 10.5
5.6
5.0
5.0
0
0
0
0
7.0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0
0 0 0
0
0
0
0
0
0
0
-7.0
0
0
-11.6
5.0
-11.8 4.8
11.8
-12.0
-11.8
0
0
0
0
-11.8
-11.8
0
0
0
-7.0
0
7.0
0
0
7.0
0
0
0
0
0
0
0
0
0
-11.8
0
0
0
0
0
0
* All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
* Components having special characteristics are marked
Z
and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
■
SCHEMATIC DIAGRAM (INPUT 2/2)
* 電圧は、内部抵抗10MΩの電圧計で測定したものです。
*
Z
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。
Point
r
(Pin 29 of IC302)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0V