Remote Control Transmitter; Schematic Diagram - Yamaha RX-V795a Service Manual

RX-V795a/RDS/HTR-5170

REMOTE CONTROL TRANSMITTER

SCHEMATIC DIAGRAM

K10 K20 K30
K9 K19 K29
K8 K18 K28
K7 K17 K27
K6 K16 K26
K5 K15 K25
K4 K14 K24
K3 K13 K23
K2 K12 K22
K1 K11 K21
M34570M4-081FP
R2
47Ω
+
BAT
1.5VX2
C1 C2
47µF 220µF
List of the fixed code
MODE TV
Key
Key MAME
No.
ID # 0037
1
1 CH1
2 2 CH2
3
3 CH3
4
4 CH4
5
5 CH5
6
6 CH6
7 7 CH7
8
8 CH8
9 9 CH9
10 DSP
11
0 CH0
12 POWER 7A-1D
13 STANDBY
14 ENTER CH Select
15
CLEAR – – – –
16 EFFECT Surround
17 CH+ CH+
18 CH– CH–
19 MUTE Mute
20 VOL+
21 TV VOL–
22 TV VOL+
23 SKIP– – – – –
24 DISPLAY Display
25 SLEEP Sleep
26 PLAY VCR Play
27
PAUSE VCR Pause
28 STOP VCR Stop
29
SKIP+ – – – –
30
VOL–
31 TV INPUT
32
TV POWER
33 REC VCR REC
34 FF VCR FF
REW VCR REW
35
36 MENU – – – –
93 37 TITLE – – – –
– – – – : No Code
ROTARY SW
MODE
9 : AMP/TUNER
8 : MD/TAPE
K37
7 : CD
K36
6 : DSP
K35
5 : DVD/LD
K34
4 : DVD_MENU
K33
3 : VCR
K32
2 : CABLE/DSS
K31
1 : TV
COMMON
SET UP CHECK LINE
IC1
D3(1/2)
D3(2/2)
1SS181
T1
C3
0.1µF
R5
100kΩ
X1 4MHz
Cable/DBS VCR
2455 3072
CH1 CH1
CH2 CH2
CH3 CH3
CH4 CH4
CH5 CH5
CH6 CH6
CH7 CH7
CH8 CH8
CH9 CH9
Shift of only Ten key in DSP Mode
CH0 CH0
Power Power
7A-1E
CH Select CH Select
+100 – – – –
7A-56
CH+ CH+
CH– CH–
7A-1C
7A-1A
TV VOL–
TV VOL+
Left – – – –
Display Display
7A-57
Menu Select Play
Up Pause
Down Stop
Right – – – –
7A-1B
TV Input
TV Power
– – – – REC
Recall FF
– – – – REW
Menu – – – –
– – – – – – – –
IC2 :
SC501054DW(U,C,L,R,T)
SC501055DW(A,B,G)
IC2
1 28
PB0 OSC1
2 27
C4
PB1 OSC2
0.1 µF
3 26
PB2 VDD
4 25 /WAKE UP
PB3 IRQ
5 24
PB4 RESET
6 23
PB5 IRO
7 22
PB6 VSS
8 21
PB7 LPRST
9 20
PA0 PC3
/INDI.
10 19
PA1 PC2
/BUSY
11 18
PA2 PC1
/DATA
12 17
PA3 PC0
13 16
PA4 PA7
14 15
PA5 PA6
D2
R4
SLR-342VC
62Ω INDICATOR(RED_LED)
D5
RLS-73
2
1
2.1V 1C3
R3
3
C5
220Ω
R7
0.1µF
10kΩ
DVD Menu DVD/LD DSP
– – – – 4545(DVD) – – – –
7C-94 7A-15 7A-88
7C-95 7A-16 7A-89
7C-96 7A-18 7A-8A
7C-97 7A-17 7A-8B
7C-98 7A-54 7A-8C
7C-99 7A-0F 7A-8D
7C-9A 7A-14 7A-8E
7C-9B 7A-55 7A-8F
7C-9C 7A-13 7A-90
– – – –
7C-93 7A-87 7A-91
7A-1D
7C-9D – – – – 7A-12
7C-9F – – – – 7A-85
7C-8B 7A-10
7C-8A 7A-11
7C-B5 7C-B9 7A-53
7C-9E 7C-A6 7A-C2
7C-B8 7C-82 – – – –
7C-B4 7C-83 7A-98
7C-B3 7C-85 7A-99
7C-B6 7C-BA 7A-52
– – – –
– – – – – – – – – – – –
7C-B7 7C-AE 7A-58
7C-AC 7C-AB 7A-59
7C-B2 7C-AD 7A-9C
7C-B1 7C-AA 7A-86
Key arrangement
12
R6
1MΩ
T2
X2
4MHz
1
2
4
5
7
8
11
14
10
18 17
22
30 19
21
25
32
33
27
D4(2/2)
26
23
D4(1/2)
1SS184
28
35
R1
37
2.0Ω(1/4W)
D1
S1D303C-01
Q1
2SC3265
CD Tape/MD
6187 8524(Tape)
7A-15
7A-16
7A-18
7A-17
7A-54
7A-0F
7A-14
7A-55
7A-13
Shift of only Ten key in DSP Mode
7A-87
7A-1D
7A-1E
– – – – – – – –
– – – – – – – –
7A-56
7A-4F – – – –
7A-50 – – – –
7A-1C
7A-1A
TV VOL–
TV VOL+
7A-0B 7A-07
79-0B – – – –
7A-57
7A-08 7A-00
7A-09 – – – –
7A-09 7A-03
7A-0A 7A-40
7A-1B
TV Input 7A-06
TV Power
– – – – 7A-04
7A-0C 7A-02
7A-0D 7A-01
– – – – – – – –
– – – – – – – –
13
3
6
9
15
16
20
24
31
29
34
36
AMP/Tuner
– – – –
7A-12
7A-85
7A-10
7A-11
7A-53
7A-C2
– – – –
7A-98
7A-99
7A-52
– – – –
– – – –
7A-58
7A-59
7A-9C
7A-86