Schematic Diagram - Yamaha RX-V420 Service Manual

A
RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS
1
I REMOTE CONTROL TRANSMITTER (B, G models)
G SCHEMATIC DIAGRAM
2
R1
1 ohm
IR-LED
D1
LED
SIN4148
3
R2
180 ohm
Q1
2SD1781K
+ C1
47µF/16V
B1
3V
4
Function Keychart
Function
5
6
7
76
B
U1 JT7060-2
1 20
KI/O6 KI/O5
2 19
KI/O7 KI/O4
00
3 18
S0 KI/O3
4 17
S1 KI/O2
01
5
16
RESET
KI/O1
02
6 15
REM KI/O0
86
7 14
VDD KI3
85
13
8
XOUT KI2
X1
3.64MHz
9 12
XIN KI1
04
10 11
GND KI0
07
Custom
Code Data
(Hex)
7A 00
7A 01
7A 02
7A 03
7A 04
7A 06
7A 07
(CD)
7A 08
(CD)
7A 09
(CD)
7A 0A
(CD)
7A 0B
7A 0C
7A 0D
7A 0F
7A 10
7A 11
7A 12
––– 7A 13
7A 14
7A 15
7A 16
7A 17
C
08 10
0D 11
0A 12
59 9C
52 87
0B
0C 14
0F 17
Custom
Function Code Data
(Hex)
7A 18
––– 7A 19
7A 1A
7A 1B
––– 7A 1C
–––
7A 1E
7A 1F
7A 40
7A 4F
(DSP)
7A 52
(DSP) 7A 53
7A 54
7A 55
7A 56
7A 57
(DSP)
7A 58
(DSP)
7A 59
7A 85
7A 86
7A 87
7A 9C
D
18 15
16 56
1A 06
1B 4F 53
57 58
55
1F
86 58 9C
53 52
85 59 56
04 06
01 00 02
07 03 40
4F
0B 08 0A
0D 09 0C
11 10 12
15 16 18
17 54 0F
14 55
57 87
1A
1B
E
03
09
40
54
1F