Yamaha RX-V765 Service Manual page 118

A B C
RX-V765/HTR-6270/AX-V765
OPERATION 1/2
1
2
-35.2
-28.9
-33.1
-35.2
-37.4
-35.2
-33.0
3
-31.2
-35.2
-33.1
3.4
-35.2
-33.2
-35.3
-37.4
-35.8
-35.3
-35.2 3.4
3.4
-35.2 -35.8
-35.3
-35.2
-35.2
-35.2
-35.2
4
5.0 3.3
PURE HDMI
DIRECT THROUGH
5 indicator indicator
2.9 2.0
2.9
2.0
0
0
0
0
6
SCENE
CD TV
7
8
OPTIMIZER
JK401
MIC
5.1
12.0
0
0 IC401
0
0
0
IC401
0 0
-11.9
9
0 0
0 0
10
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
★ Components having special characteristics are marked
and must be replaced ●
with parts having specifications equal to those originally installed. パーツリストに記載されている部品を使用してください。
★ Schematic diagram is subject to change without notice.
● 本回路図は標準回路図です。改良のため予告なく変更することがございます。
118
D E F
3.4
3.4
-31.0 -31.1
-37.3
-31.0 -31.0
-33.0
-33.1
-33.0
-33.1
-33.0
-33.1
IC402
-31.0
3.4 3.4 3.4
1.6
1.6
0 -30.5
-35.3 -35.2
3.2
-35.1 -35.1
3.2
-34.1
3.4
3.3
-37.6
0 0
INPUT PROGRAM
U, C, R, T, K, A, B, G, E, F, L models
J model
BD/DVD
12.0
12.0
11.7
12.0
11.7 0
12.0
0
0
Page 114 B2
to DIGITAL_CB20
印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
G H I
OPERATION (1)
JK472
PHONES
VOLUME
VIDEO
-37.7 CB403
3.3
0
0
VIDEO
-29.9
AUX
-29.9 AUDIO
PORTABLE
Page 123 L7
to VIDEO (6)_CB333
CB404
0
0
0
0
0
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
RX-V765/HTR-6270
Ohm 0 +1.0k
Page 119 I5
V 0 – 0.15 0.15 – 0.42
A/D value
0 – 11 12 – 32
to OPERATION (2)_CB461 (3.3 V=255)
KEY1 SCENE SCENE
(133 pin) RADIO CD
Ohm 0 +1.0k
V 0 – 0.15 0.15 – 0.42
A/D value
0 – 11 12 – 32
(3.3 V=255)
KEY2 PURE STRAIGHT /
(134 pin) DIRECT EFFECT
J K L
OPERATION (3)
CB477
Page 123 A3
to VIDEO (1)_W3401
CB475
W4407
JK472
OPERATION (7)
W4408
0
0
0
0
0
CB476
0 0 0 0
JK471
0 0 0 0
OPERATION (10)
W4404
MAIN ZONE ON/OFF
(U, C, R, T, K, A, B, G, E, F, L models)
STANDBY/ON
OPERATION (6)
(J model)
AX-V765
+1.0k +1.5k +1.5k +2.2k +3.3k +4.7k +22.0k +33.0k Ohm 0 +1.0k +1.0k
0.43 – 0.70 0.71 – 0.97 0.98 – 1.24 1.25 – 1.53 1.54 – 1.84 1.84 – 2.1 2.34 – 2.55 2.55 – 2.97 V 0 – 0.15 0.15 – 0.42 0.43 – 0.70
A/D value
33 – 54 55 – 75 76 – 95 96 – 118 119 – 142 143 – 162 181 – 197 198 – 229 0 – 11 12 – 32 33 – 54
(3.3 V=255)
KEY1 SCENE SCENE SCENE
SCENE SCENE ZONE2 ZONE2 MAIN ZONE TONE
— —
TV BD/DVD ON/OFF CONTROL ON/OFF CONTROL (133 pin) RADIO CD TV
+1.0k +1.5k +1.8k +2.2k +3.3k +4.7k +6.8k +10.0k +22.0k +68.0k Ohm 0 +1.0k +1.0k
V 0 – 0.15 0.15 – 0.42 0.43 – 0.70
0.43 – 0.70 0.71 – 0.99 1.0 – 1.27 1.28 – 1.56 1.57 – 1.86 1.86 – 2.14 2.14 – 2.4 2.4 – 2.65 2.66 – 2.91 2.92 – 3.17
A/D value
0 – 11 12 – 32 33 – 54
33 – 54 55 – 77 78 – 98 99 – 120 121 – 143 144 – 165 166 – 185 186 – 205 206 – 225 226 – 245
(3.3 V=255)
CATEGORY CATEGORY KEY2 PURE STRAIGHT /
PRESET PRESET TUNING CH TUNING CH INFO
INFO MEMORY < > — — (134 pin) DIRECT EFFECT
< > < >
FM AM
M N
IC401: NJM4565M
Dual operational amplifier
V+
8
2, 6
–INPUT OUTPUT
1, 7
+INPUT
3, 5
V–
4
IC402: M66003-0131FP-R
18 digit 5 x 7 segment VFD controller/driver
Display code
CGROM
RAM
(35-bit x 166) 44 SEG00
(8-bit x 60)
Segment 19 SEG25
Code
output
write 17 SEG26
circuit
CGROM
CS 2 Serial dot data 9 SEG34
data (35-bit x 16)
receive write
SCK 3
Code/
SDATA circuit
4 command
45 SEG35
control
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
Segment/
code DIG13/
Digit 50
select SEG40
select/
DIG14/
XIN 7 49
Clock output SEG39
timing Display
generator
clock controller scan pulse circuit DIG15/
XOUT 6 48
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63 DIG00
Digit
RESET 1 output
circuit
Vcc1 8
53 DIG10
Vcc2 18
Vss 5
Vp 64
+1.5k +1.5k +2.2k +3.3k +4.7k +22.0k +33.0k
0.71 – 0.97 0.98 – 1.24 1.25 – 1.53 1.54 – 1.84 1.84 – 2.1 2.34 – 2.55 2.55 – 2.97
55 – 75 76 – 95 96 – 118 119 – 142 143 – 162 181 – 197 198 – 229
SCENE STANDBY/ TONE
SLEEP MUTE — —
BD/DVD ON CONTROL
+1.5k +1.8k +2.2k +3.3k +4.7k +6.8k +10.0k +22.0k +68.0k
0.71 – 0.99 1.0 – 1.27 1.28 – 1.56 1.57 – 1.86 1.86 – 2.14 2.14 – 2.4 2.4 – 2.65 2.66 – 2.91 2.92 – 3.17
55 – 77 78 – 98 99 – 120 121 – 143 144 – 165 166 – 185 186 – 205 206 – 225 226 – 245
PRESET PRESET TUNING TUNING
MEMORY FM AM — —
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