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