A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
81
OPERATION 1/2
HTR-2064/NS-B20/NS-C20/NS-SWP20
★
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.
CB171
W1002
CB103
W1003
CB102
W1001
JK166
CB166
CB101
CB106
CB145
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
IC101
: 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
PHONES
SILENT CINEMA
OPERATION (5)
OPERATION (8)
OPERATION (6)
OPERATION (1)
OPERATION (7)
BD
DVD
TV
CD
FM
MODE
MUTE
RADIO
VOLUME
(Power)
Remote control
sensor
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm
0
+ 1.0 k
+ 1.0 k
+ 1.5 k
+ 1.5 k
+ 2.2 k
+ 3.3 k
+ 4.7 k
(22 k + 33 k)
22.0 k
33.0 k
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 – 2.10
2.11 – 2.33
2.34 – 2.54
2.54 – 2.71
0 – 11
12 – 32
33 – 54
55 – 75
76 – 96
97 – 119
12 – 142
143 – 163
164 – 181
182 – 197
198 – 209
SCENE
RADIO
SCENE
CD
SCENE
TV
SCENE
BD/DVD
PROGRAM
>
PROGRAM
<
INPUT
>
INPUT
<
–
(Power)
TONE
CONTROL
Ohm
0
+ 1.0 k
+ 1.5 k
+ 1.8 k
+ 2.2 k
+ 3.3 k
+ 4.7 k
+ 8.2 k
+ 10.0 k
0 – 0.15
0.15 – 0.48
0.49 – 0.82
0.83 – 1.14
1.15 – 1.46
1.47 – 1.79
1.80 – 2.12
2.13 – 2.40
2.41 – 2.91
Normal voltage
value range
0 – 11
12 – 37
38 – 64
65 – 88
89 – 113
114 – 139
140 – 164
165 – 186
187 – 226
STRAIGHT
TUNING
>>
TUNING
<<
AM
FM
PRESET
>
PRESET
<
MEMORY
INFO
Key name
(KEY2, 91 pin)
A/D value range
(3.3 V=255)
Key name
(KEY1, 92 pin)
A/D value range
(3.3 V=255)
Normal voltage
value range