Service manual

★ 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.
A
1
2
3
4
5
6
7
8
9
10
BCDEFGH I JKLMN
RX-V665/HTR-6260
114
OPERATION 1/2
CB401 CB402
CB403
CB404
W4003
W4002
JK471
W4405
W4404
IC401
IC401
JK401
IC402
W4406
CB477
JK472
W4403
CB476
CB474
-27.5 -27.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5
-36.5
-34.5 -26.1
-26.1
3.4
-28.1
-32.8
-32.2
-28.2
-28.2
-28.2
-28.2
-30.3
3.4
3.4
3.4
3.4
3.4
-34.4
-34.4
3.4
-34.4
3.4
2.0
-28.2
-32.5
-36.8
0
0
0
0
0
0
5.1
0
12.1
11.5
0
0
0
0
0
0
0
0
12.1
-12.1
0
0
0
0
0
0
0
0
0
0
0
0
0
3.4
5.1
2.9
2.9
-34.4
3.4
-30.3
-30.1
3.4
-30.3
-30.2
3.4
-26.3
-26.1
3.4
-28.3
-28.3
2.0
0
0
11.5
10.9
0.8
3.3
0
0
0
0.8
0.8
0
3.4
-34.4
-34.3
3.4
-34.5
-34.4
1.6
0
0
1.6
-30.2
-30.2
-30.3
-28.3
-28.3
-34.4
-34.4
-34.4
-34.4
-24.1
-36.5
-26.2
-26.2
-36.5
-32.3
-32.3
-26.1
-32.3 -26.3 -26.0 -26.0 -26.0 -21.9 -30.1 -30.2 -32.2 -32.3 -36.5 -32.2
-34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.5 -34.3 -34.4 -34.4 -36.8
3.3 3.3
0
-36.5 -34.4 -34.1 -28.3 -28.3 -30.3 -30.1 -30.2 -30.2 -30.2 -26.1 -26.1 -26.1 -26.1 -28.1 -28.1 -28.2
-27.5
-27.5
-28.2 -28.2 -26.0 -26.0 -26.0 -21.9 -26.2 -26.2 -30.2 -32.3 -32.3 -32.3 -32.2 -32.2 -32.8 -32.3 -36.5 -32.2
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
IC402: 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
IC401: NJM4565M
Dual operational amplifier
8
2, 6
3, 5
1, 7
4
V+
–INPUT
+INPUT
V–
OUTPUT
AUDIO
VIDEO
PHONES
VOLUME
OPTIMIZER
MIC
SCENE
HDMI
THROUGH
indicator
PURE
DIRECT
indicator
VIDEO
AUX
PORTABLE
OPERATION (3)
OPERATION (7)
OPERATION (10)
OPERATION (6)
OPERATION (1)
MAIN ZONE ON/OFF
BD/DVDTVCD
to DIGITAL_CB20
Page 110
B2
to OPERATION (2)_CB461
Page 115 I5
to VIDEO (6)_CB333
Page 119
N8
to VIDEO (1)_W3401
Page 119
B4
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm 0 + 1.0k + 1.0k + 1.5k + 1.8k + 2.2k + 3.3k + 4.7k + 6.8k + 10.0k + 22.0k + 68.0k
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 2.4 – 2.65 2.66 – 2.91 2.92 – 3.17
A/D value
(3.3 V=255)
0 – 11 12 – 32 33 – 54 55 – 77 78 – 98 99 – 120 121 – 143 144 – 165 166 – 185 186 – 205 206 – 225 226 – 245
KEY2 (134 pin)
PURE
DIRECT
STRAIGHT INFO MEMORY
PRESET
<
PRESET
>
CATEGORY <
FM
CATEGORY >
AM
TUNING CH
<
TUNING CH
>
INPUT
<
INPUT
>
Ohm 0 + 1.0k + 1.0k + 1.5k + 1.5k + 2.2k + 3.3k + 4.7k + 22.0k + 33.0k
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 2.55 – 2.97
A/D value
(3.3 V=255)
0 – 11 12 – 32 33-54 55 – 75 76 – 95 96 – 118 119 – 142 143 – 162 181 – 197 198 – 229
KEY1 (133 pin)
SCENE
RADIO
SCENE
CD
SCENE
TV
SCENE
BD/DVD
ZONE2
ON/OFF
ZONE2
CONTROL
PROGRAM
>
PROGRAM
<
MAIN ZONE
ON/OFF
TONE
CONTROL