Remote Control Transmitter; Schematic Diagram - Yamaha AV-S70 Service Manual

A
1

REMOTE CONTROL TRANSMITTER

SCHEMATIC DIAGRAM

VDD
C1
470µF
C3 0.1µF
2
OPTION
C4
K65
VBAT
R3
220kΩ
3 R4
0.01µF
1MΩ
Q1
2N3904
VDD
VBAT
BAT
1.5V x 2
4
5
6
7
B
38
VDD
17
VDD
C2
39
0.1µF VSS
16 27
P21/TXD/S00
VSS
28
P20/SCK0
15
X1
X1
4.0MHz
14
X2
13
IC
4
P47/KR7
5
VDD
P46/KR6
6
P45/KR5
7
R7 P44/KR4
470kΩ 8
P43/KR3
18
RESET 9
P42/KR2
C6
10
P41/KR1
0.1µF
11
P40/KR0
IC1
25
P30/INTP0
C5 40
37
P17
NC NC
41
P16
12
NC NC
42
P15
43
P14
38
44
NC P00 P13
35 1
P12
NC P01
2
34
P11
NC P02
3
P10
32
NC P04
21
31
P51/T02
NC P05
30
NC P06
29
NC P07
22
P50/T10/T00
26
P22/RXD/S10
33
P03
19
24
P53
P31/INTP1
23 20
P52
P32/INTP2/CPT2
C
VDD VDD VDD
R6 R2
1kΩ 1kΩ
6 8
SCL VDD
5
SDA
C7
0.1µF
IC2
7
NC
1
A0 4
VSS
2
A1
3
A2
P47
P41 P42 P43 P44 P45
P46
P45
K50 K51 K52 K53
P44
P43
P16
K42 K43 K44 K45 K46
P42
P41
P15
K34 K35 K36 K37
NC
P14 K26 K27 K28 K29 K30
P13 K18 K19 K20 K21 K22
P12 K10 K11 K12
NC
P16
P15 P11
P14
P13
P12
P11
VBAT VDD VBAT
NC
R5
820Ω
R16
D2
100kΩ
R15
6.8Ω
VDD
512
JP1
256
NC
Initial code of YAMAHA
Key
FUNCTION
No.
10
11 DSP SET
12
INPUT
16 TruBass
18 VOL –
19
20
21 VOL +
22
23 TEST
26 DSP ON/OFF
27 S70
28 VCR
29
SAT
30 TV
31
34 1 (TEST MODE only)
35
4 (TEST MODE only)
36 7 (TEST MODE only)
37
MENU +
39 SUBWOOFER –
42
2 (TEST MODE only)
43 5 (TEST MODE only)
44
8 (TEST MODE only)
45 MENU
46 NIGHT MODE
50 3 (TEST MODE only)
51 6 (TEST MODE only)
52 9 (TEST MODE only)
53 MENU –
55 SUBWOOFER +
D
AV-S70/NX-SW70
P46 P47
K55
K39
K31
K23
K16
D3
R1
22Ω
Q4
8550D
CUSTOM DATA
(HEX) (HEX)
78 9C
78 51
78 5E
78 8B
78 1F
— —
— —
78 1E
78 0F
78 5F
78 50
— —
— —
— —
— —
— —
78 11
78 14
78 17
78 9E
78 4D
78 12
78 15
78 18
78 9D
78 8A
78 13
78 16
78 19
78 9F
78 4C
E
55