Yamaha RX-V2065 Service Manual page 130

A B C
RX-V2065/HTR-6295
OPERATION 1/2
1
2
-33.1
-28.9
-30.9
-33.0
-35.2
-35.1
-30.8
3
-35.0
-35.0
-33.0
3.3
3.3 -35.1
-35.0
-35.1
-37.3
-35.2
-35.2
-35.1 3.3
3.3
-35.0 -35.2
-35.2
-35.2
-35.2
-35.2
-35.1
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
ZONE
CONTROLS
8
OPTIMIZER JK401
MIC
5.1
12.0
0
0
IC401
0
0
0
IC401
0 0
-11.7
9
0 0
0 0
10
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
130
D E F
3.3
3.3
-31.0 -31.0
-33.0
-30.9 -30.9
-33.0
-33.0
-30.9
-33.0
-33.0
-33.0
IC402 -30.0
1.5 3.3 3.3
1.5
1.5
0 -29.9
-35.1 -35.1
FL DRIVER
0
-35.0 -35.0
3.1
-32.0
3.3
3.3
-37.6
0
0 0
INPUT PROGRAM
T model
U, C, R, K, A, B, G, E, F, L models
ZONE2 ZONE3
BD/DVD
U model
INFO MEMORY BAND TUNING/CH
BAND
C, R, T, K, A, B, G, E, F, L models
12.0
12.0
11.8
12.0
0
12.0
0
0
Page 124 B2
to DIGITAL (1)_CB20
G H
OPERATION (1)
VOLUME
VIDEO
AUX
0
-37.5 CB403
3.3
0
0
-29.9
-29.9
CB404
0
0
0
0
0
Page 131 I5
to OPERATION (2)_CB461
I J K
OPERATION (3)
0 0
0 0
CB477
3.3
JK472
0
0
0
PHONES
VIDEO
0 0
0 0
W4406
0
0
0 0 0
0
0 0 0
AUDIO
CB475
OPERATION (4)
5.0
0
0
USB
0
0
W4407
Page 138
to GUI_CB550
OPERATION (5)
CB476
JK471
OPERATION (10)
W4404
Page 135 L7
to VIDEO (6)_CB333
MAIN ZONE
ON/OFF
OPERATION (6)
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
RX-V2065/HTR-6295
Ohm 0 +1.0k +1.0k +1.5k +1.5k +2.2k +3.3k +4.7k +22.0k
V 0 – 0.15 0.15 – 0.42 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
A/D value
0 – 11 12 – 32 33 – 54 55 – 75 76 – 95 96 – 118 119 – 142 143 – 162 181 – 197
(3.3 V=255)
KEY1 SCENE SCENE SCENE SCENE ZONE2 ZONE3 MAIN ZONE
— —
(133 pin) RADIO CD TV BD/DVD ON/OFF ON/OFF ON/OFF
Ohm 0 +1.0k +1.0k +1.5k +1.8k +2.2k +3.3k +4.7k +6.8k
V 0 – 0.15 0.15 – 0.42 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
A/D value
0 – 11 12 – 32 33 – 54 55 – 77 78 – 98 99 – 120 121 – 143 144 – 165 166 – 185
(3.3 V=255)
KEY2 PURE STRAIGHT / ZONE PRESET PRESET BAND/ TUNING CH
INFO MEMORY
(134 pin) DIRECT EFFECT CONTROLS < > CATEGORY <
L M N
IC401: NJM4565M
Dual operational amplifier
V+
8
2, 6
–INPUT OUTPUT
1, 7
+INPUT
3, 5
Page 135 A3
V–
4
to VIDEO (1)_W3401
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
D9
+33.0k
2.55 – 2.97
198 – 229
TONE
CONTROL
+10.0k
2.4 – 2.65
186 – 205
TUNING CH
>