A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
135
OPERATION 1/2
RX-V671/HTR-6064/RX-A710
★
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.
IC401
CB406
CB471
W4402
W4002
IC481
CB473
CB407
W4003
CB401
CB402
IC471
IC471
JK472
CB446
JK471
W4482
W4401
CB472
W4481
W4013
W4012
W4011
52
Display
controller
Serial
receive
circuit
Digit
output
circuit
Clock
generator
DIG11/
SEG42
51
DIG12/
SEG41
50
DIG13/
SEG40
49
DIG14/
SEG39
48
DIG15/
SEG38
47
DIG16/
SEG37
46
DIG17/
SEG36
45
SEG35
XOUT
6
Vcc1
8
Vcc2
18
Vss
5
Vp
64
XIN
7
CS
SCK
3
SDATA
4
RESET
1
SEG00
44
9
SEG34
SEG26
17
19
SEG25
Segment
output
circuit
Display code
RAM
(8-bit x 60)
CGROM
(35-bit x 166)
CGROM
(35-bit x 16)
code
select
Code
write
Code/
command
control
circuit
DIG00
63
53
DIG10
IC401
: M66003-0131FP-R
18 digit 5 x 7 segment VFD controller/driver
2
data
timing
clock
dot data
write
scan pulse
Segment/
Digit
select/
output
circuit
IC471
: NJM4565M (TE1)
Dual operational amplifier
8
2, 6
3, 5
1, 7
4
V+
–INPUT
+INPUT
V–
OUTPUT
V
DD
CE
Vref
4
3
1
2
Current Limit
V
OUT
GND
Pin No.
1
2
3
4
Symbol
V
OUT
GND
CE
V
DD
Description
Output Pin
Ground Pin
Chip Enable ("H" Active)
Input Pin
IC481
: RP130Q331D-TR-F
Voltage regulator
FL DRIVER
OPERATION (5)
OPERATION (1)
OPERATION (4)
OPERATION (6)
OPERATION (7)
OPERATION (3)
OPERATION (11)
YPAO
MIC
MAIN ZONE
Remote control
sensor
VOLUME
PURE DIRECT
indicator
USB
PURE
DIRECT
PHONES
SILENT CINEMA
VIDEO AUX
VIDEO
AUDIO
L
R
to chassis
HDMI Through/
iPod Change indicator
to DIGITAL (1)_CB81
Page 131
K8
to DIGITAL (1)_CB902
Page 132
K8
to DIGITAL (1)_CB951
Page 134
M8
to VIDEO (1)_W3401
Page 142
B4
to OPERATION (2)_CB458
Page 136
K8
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm
V
A/D conversion value
(3.3V=255)
KEY2 (170 pin)
0
0 − 0.15
0 − 11
+ 1.0 k
0.16 − 0.42
12 − 32
TUNING
>>
+ 1.0 k
0.43 − 0.70
33 − 54
TUNING
<<
+ 1.5 k
0.71 − 0.99
55 − 77
AM
+ 1.8 k
1.00 − 1.27
78 − 99
FM
+ 2.2 k
1.28 − 1.56
100 − 121
PRESET
>
+ 3.3 k
1.57 − 1.86
122 − 144
PRESET
<
+ 4.7 k
1.87 − 2.14
145 − 166
MEMORY
+ 6.8 k
2.15 − 2.39
167 − 186
INFO
+ 10.0 k
2.40 − 2.65
187 − 205
STRAIGHT
+ 22.0 k
2.66 − 2.91
206 − 226
PROGRAM
>
+ 68.0 k
2.92 − 3.17
227 − 246
PROGRAM
<
Ohm
V
A/D conversion value
(3.3V=255)
KEY1 (171 pin)
0
0 − 0.15
0 − 11
RADIO
(SCENE4)
+ 1.0 k
0.15 − 0.42
12 − 32
CD
(SCENE3)
+ 1.0 k
0.43 − 0.70
33 − 54
TV
(SCENE2)
+ 1.5 k
0.71 − 0.97
55 − 75
BD/DVD
(SCENE1)
+ 1.5 k
0.98 − 1.24
76 − 96
ZONE2
CONTROL
+ 2.2 k
1.25 − 1.53
97 − 119
ZONE2
ON/OFF
+ 3.3 k
1.54 − 1.84
120 − 142
INPUT
>
+ 4.7 k
1.85 − 2.22
143 − 163
INPUT
<
22.0 k
2.23 − 2.62
182 − 197
MAIN ZONE
(power)
33.0 k
2.63 − 3.04
198 − 209
TONE
CONTROL
PURE DIRECT
DRAFT
