RX-397

■ BLOCK DIAGRAM
RY103
OPERATION
• See page 30 → SCHEMATIC DIAGRAM C834,835 Head Phone

FM/AM
TUNER 2,29 12,19 Motor Volume IC401 Muting Power RY101
VR431/IC431 Q401,402 Front A
FM/AM 7.2MHz Amp
C157,158

PHONO EQ 3,28 Pure Direct SW /MIMT

PHONO SW402 RY102
IC301
Front B
C156,159

NJU7313AM
OPERATION

Switch
• See page 30 → SCHEMATIC DIAGRAM

IC501
Tone
Con/Balance MAIN • See page 31 → SCHEMATIC DIAGRAM
7,24
CD/DVD VR751-754

5,26 8,23 F252

AUX RY251 ACH
SW101
Analog

4,27 6+9,22+25 +B

C140
ACL

F251/J252
MD

D111
REC OUT
11,20 MD G

C141
TAPE
ACL
TAPE –B

TE251
ACH SW101

FUNCTION • See page 29 → SCHEMATIC DIAGRAM ACL

+15V
+15
Q121

C135

D112-115
D109
G

DETECT
20 POWER

/RESET

C144
D110

THMR
OPERATION
PRD
PRV
PRI

ACL –15V –15

Q128
• See page 30 → SCHEMATIC DIAGRAM
91
80

90

93

12 ACL –22V
75 70 Q801 VP
IR REMOTE

C803
POWER RELEY
U801 D806

+
72
HP RERAY G
SPEAKER SW/STANDY SW 74,18
SW823/SW828/SW825 76,77
SPEAKER RELEY
VOLUME 78,79 65
MUTE CONTROL FL1
VR431, IC431 Microprocessor
M30626 81
POWER SAVE FL2
INPUT SELECTOR 84,85 IC602
SW827

KEY 94,95
SW801-818
SERIAL TUNER/RDS
FL DISPLAY FL DRIVER 83,100,1,2 CONTROL
ANALOG
V801 IC801
13 15
XL601
16MHz
Power
IC251,252,253 Detector
/Reset

Q254

D259
D605
+5BU

D604
s10 +5.5V +5M
IC601

Q252 RY251
D603 Q605
+5S

D261
C261
G

POWER RELAY POWER SAVE

28
 A B C D E F G H I J K

RX-397

■ SCHEMATIC DIAGRAM (FUNCTION)

1

IC501: NJU7313AM
Analog Function Switch

L1 2 29 R1
L2 3 28 R2

L3 4 27 R3
L4 5 26 R4

LEVEL SHIFTER
LEVEL SHIFTER
L-COM1 6 25 R-COM1

LATCH

LATCH
L5 7 24 R5

L6 8 23 R6

L-COM2 9 22 R-COM2

L7 10 21 R7

2 L8 11 20 R8

L-COM3 12 19 R-COM3
ST 14 17 DATA
CONTROL
VDD 30 16 CK

VEE 1 15 VSS

NC 13 18 NC

Page 31 C-2 Page 30 A-7 Page 30 J-6

TO MAIN (1) W103 TO OPERATION (1) CB801 TO OPERATION (13) CB301

TO OPERATION (2) CB407

Page 30 A-2
0
0 0

CD/DVD
4
0

TO OPERATION (2) CB401

0 4.8
0
10.1 5.4 5.4 4.8 4.8
5.2 11.9
0 0 11.9 14.5
0 5.4 4.8 4.2

Page 30 A-3
0
5.6 12.3
0
4.7
0 0.1 4.8
5.4
0.1

4.7 5.6 12.3

AUX
0 0 0 0

0
0
0 0

0 0
5

IC603 : LC72722PM
MD IN 0
RDS Decoder

FL OUT
0 0

VREF

C IN
0

1 5 6
0 VDDA 3 CLOCK

4.7
+
PLL 14 VDDD

4.7
4.7

4.7

4.8

4.8

4.4

4.6

4.7

4.7

4.7

4.7
RECOVERY

0
REFERENCE (57kHz)

0
0
0
0

0
(1187.5Hz)

0
VOLTAGE
VSSA 4 15 VSSD
VREF
4.7 4.7 57kHz
ANTIALIASING SMOOTHING DATA
MPX IN 2 bpf DECODER 19 RDS-ID
0 FILTER (SCF) FILTER
4.7 0
DO 20
MD OUT 0 0
CL 21 RAM ERROR CORRECTION SYNC/EC 18 SYNC
4.8 DI 22 CCB (24 BLOCK DATA) (SOFT DECISION) CONTROLLER
4.7 24 SYR
6 4.7 CE 23
CLK(4.332MHz)
0 T1 7 MEMORY
0 T2 8 CONTROL
TEST SYNC SYNC
T3 9 OSC/DIVIDER DETECT-1 DETECT-2
1.6 0
T4 10
1.8 0
1.7
11 16 17 13 12

X IN

X OUT
T5
T6
T7
0.9
0
4.8
4.8 0
TAPE PB
0 0

1.7 4.6

4.7 0

4.7 4.7
-0.6 4.7 4.7

4.7

0
0 14.2
Point q (Pin 13 of IC602)
7

0
0
4.7

4.7

4.7

2.3

2.2
4.7

4.8
0
0
0

0
0 -14.5
-0.6
TAPE
REC OUT

4.8

-14.4 4.7

1 * All voltages are measured with a 10MΩ/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.

29
 A B C D E F G H I J K L

RX-397

■ SCHEMATIC DIAGRAM (OPERATION)

1
IC301, 401, 751: NJM2068MD-TE
Dual OP-Amp

OUT1 1 8 +VCC

13.1 14.5 13.1

–IN1 2 7 OUT2
+ – + –
+IN1 3 6 –IN2
0
–VCC 4 5 +IN2

TO MAIN (1) CB107

PURE DIRECT OFF

Page 31 A-6
2 0
-14.4
TO FUNCTION (2) CB611

0
14.0
0
Page 29 D-4

0 -14.4
0.1 0

PURE DIRECT OFF PURE DIRECT ON 0.1

-14.0
0
TO FUNCTION (2) W601

0.1
Page 29 D-4

0.1 0
3

IC431: LB1641
Motor Driver

VCC 2

VCC 1
OUT 1

OUT 2
P1

P2
3 2 8 10 9 7
0
0.6 IC801: M66003-0131FP
0.8 Display Driver

PRE DRIVER
1.4
1.8 4 VZ
Display code
1.8 RAM CGROM
(35 bit x 166) 44 SEG00
0.1 14.1 (8-bit x 60)
14.1 Code Segment 19 SEG25
0.1 0 write output
0.8
17 SEG26
circuit
4 0.6 CS 2 Serial data
dot data
CGROM
(35 bit x 16)
9 SEG34
INPUT LOGIC write
IN 1 5 6 IN 2 SCK 3 receive
circuit Code/
GND 1 SDATA 4 command
control 45 SEG35
circuit DIG11/
52
SEG42
51 DIG12/
SEG41
code Segment DIG13/
select 50
digit SEG40
select/ 49 DIG14/
XIN 7 Clock output SEG39
timing Display
Page 31 J-5 generator clock controller scan pulse circuit 48 DIG15/
XOUT 6 SEG38
TO MAIN (2) W293 47 DIG16/
SEG37
-15.7

-12.7
-12.8

-19.7
-13.1
-21.4
-21.4
-21.4

-21.4
-21.4
-19.6

-21.4
-19.6
-21.3
-14.4

-21.2
-21.2
-14.4
-19.6
-21.3
-19.3
-14.8
-15.8
-13.9
-12.7
-12.7
-13.9
-21.4

-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8

-15.7
~
~

~
~

~
~

~
~

46 DIG17/
SEG36

63 DIG00
Digit
RESET 1 output
Vcc1 8 circuit
53 DIG10
Vcc2 18
5 Vss 5
-21.4

Vp 64
-21.2

-14.4
-21.3
-19.6
-21.4

-19.6
-21.4
-21.4

4.8
~
~

~
~

~
~

-21.2 -21.4
-16.0
-14.4 -21.4
-19.6 -21.4
-21.3 -13.1
-18.8
-19.3 -19.9
-14.8 ~
-15.8 ~
-13.9 -12.7
-18.8 12.6
-12.7 4.8
0
-12.7 2.1
-13.9 0 0
2.1
0 -21.6
-12.4
4.7

6 4.8 4.7
4.7

-19.8 4.7
-19.4
-19.8

TO FUNCTION (2) CB607

-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-19.8
-21.6

Page 29 H-3
0

0 0

-12.6

7
4.8
4.8
0
TO FUNCTION (2) CB606
Page 29 F-3

-22.3
8
-22.3

-21.6 -27.7 -27.7

-28.8 * All voltages are measured with a 10MΩ/V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
Page 31 B-2 those originally installed.
TO MAIN (1) CB103
* Schematic diagram is subject to change without notice.

30
 A B C D E F G H I J K

RX-397

■ SCHEMATIC DIAGRAM (MAIN)

1
IC102 : LM61CIZ
Temperature Sensor

+Vs

Vout

AC4.2

Page 30 D-8
TO POWER TRANSFORMER
GND TO OPERATION (1) W801 Page 29 E-3
TO FUNCTION (2) CB605

2
5.9
0.9
0

5.9

25.5 25.5 25.5 25.5

0.1

14.5
32.2
32.1
3 3.6 3.8
25.5
15.1 32.1 32.2
44.9
15.1 (32.8)

TO POWER TRANSFORMER
3.6 3.8 25.5 0 0
AC65.3 Point w
3.9 4.1 0 0 0
-32.5
CH 1 : (+) of C252
15.1
3.3 3.4 0 CH 2 : Collector of Q251
-44.9
(-32.8)
0

0
AC48.0

-15.1

-15.1

-14.6
-28.4
4

↑ ↑ ↑
AC POWER ON AC POWER OFF AC POWER ON
(Connect the power cable) (Disconnect the power cable) (Connect the power cable)

IC252 : TC4013BP
Dual D Flip Flop

TO MAIN (2) CB257

1Q 1 14 VDD

Page 31 K-5
Q
1Q 2 13
Q 2Q
44.8
Q
1CP 3 CP Q 12 2Q
44.8 44.7
1CL 4 CL CP 11 2CP
0 Page 30 G-5
5 1.0 44.8 1DATA 5 D CL 10 2CL TO POWER CABLE TO OPERATION (12) CB282
TO POWER TRANSFORMER
or
0.5 1PR 6 PR 9
0.5
D 2DATA Page 31 G-5
1.0
44.6
VSS 7 PR 8 2PR TO MAIN (4) W291
0 TO POWER TRANSFORMER
0
-0.4
-1.1 0

0.6 0.6
0 0
2 CH2 2 CH1
-43.6 -44.4 0

SPEAKERS
0
-0.5
-0.5
-1.1
-44.9 0
-1.1 4.8
-44.9
~ ~
-43.6
6 4.6 ~
~ ~ ~
-44.2

AC5.6
TO OPERATION (2) W404

4.7 ~
~
Page 30 E-2

0
4.6 ~
4.8
~ ~
0.1

0 4.3
0.1 ~ ~
0
0 ~ ~
~
~
0 0
0 ~ ~ ~

~ ~

-44.2
-43.6
0 ~
-44.9
0.1 10.1
7 -1.0 -1.0
-44.9
0
10.1 1.1

1.0 ~
~
-0.5 -0.5
0
-43.6 -44.4 10.1 0
0

0.1 0
~

0.7 0.7

-1.0 0
-0.4 0

0
44.6
1.1
0.5
0.5

1.1
44.8

44.8

* All voltages are measured with a 10MΩ/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.

31
 RX-397

REMOTE CONTROL RAX16

KEY NO. LAYOUT
■ SCHEMATIC DIAGRAM
K7 K9 K8
+3V
1 2
SW2
K25 K26
ZONE3 3 4 5 6

ZONE2 K10 K14 7 8 9 10

D1
SW1 1 KI/O6 KI/O5 20
K15 K16 K19 K17 14
ID2
2 KI/O4
19
KI/O7
ID1 3 S0 18 15 16
KI/O3 K21 K23 K22 K24

U1 µPD67AMC–311
Q1
4 S1/LED KI/O2 17
R2 17 18
47Ω 5 REM 16 K29 K27 K28
KI/O1
19 20
6 VDD KI/O0 15
K1 K20 K18 K2
7 XOUT KI3
14 21 22 23 24
4.00MHz 8 XIN 13 K6 K4 K3 K5
C1
KI2
J2 25 26 27 28
X1
R1 9 GND 12
1Ω 47µF
KI1 30 31
29
10 S2 KI0
11

YAMAHA RAX16 IR CODE TABLE

Code (ID2)
Key AMP DEVICE
Key Name
No. (RDS) CD TAPE
1 SLEEP 7D-93
2 POWER 7D-B2
3 CD/DVD 7D-87
4 PHONO 7D-88
5 TUNER 7D-89
6 STANDBY 7D-B1
7 MD 7D-86
8 TAPE 7D-8B
9 AUX 7D-8A
10 SPEAKERS-A 7D-E7
11 (no key) (no code)
12 (no key) (no code)
13 (no key) (no code)
14 SPEAKERS-B 7D-E8
15 PRESET (+) 7D-F5
16 VOLUME (+) 7D-8D
17 PRESET (-) 7D-F6

RX-397
18 VOLUME (-) 7D-8E
19 A/B/C/D/E 7D-F7
20 MUTE 7D-94
21 Device (no code) REW 7A-0D REW 7A-01
22 Device (no code) PAUSE 7A-09 A/B 7A-06
23 Device (no code) FF 7A-0C FF 7A-02
24 Device (no code) DISPLAY 79-0A (no code)
25 Device FREQ/TEXT 7D-23 SKIP (-) 7A-0B DIR A 7A-07
26 Device MODE-PTY 7D-25 STOP 7A-09 STOP 7A-03
27 Device SEEK-START 7D-26 SKIP (+) 7A-0A DIR B 7A-40
28 Device EON 7D-24 DISC SKIP 7A-4F REC 7A-04
29 Device (no code) PLAY 7A-08 PLAY 7A-00
30 AMP/DEVICE
31 CD/TAPE

33