Yamaha CRX-040 Service Manual page 73

Micro component system cd receiver/speaker
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A
B
SUB 2/2
1
2
3
~
~
~
~
~
~
~
~
~
~
4
~
~
3.3
-19.8
-19.8
-20.0
5
6
7
JK802
8
PORTABLE
JK801
PHONES
9
10
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C
D
E
~
~
~
~
~
FL DRIVER
~
<-18.2>
~
-21.4
-18.3
IC801
~
3.3
1.5
1.5
0
3.4
3.3
3.4
3.3
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm
V
A/D value (3.3 V = 255)
KEY0 (97 pin)
<3.3>
<0>
0
0
0
0
0
0
0
0
F
G
H
15.4
<-15.2>
7.8
<7.7>
<-15.0>
-15.2
0.4
7.9
<7.8>
0.4
<7.7>
7.0
<-0.4>
7.9
<7.8>
0.4
0
7.8
<7.7>
0
0
0
+ 6.8k
+ 2.7k
+ 5.5k (15k)
+ 18k
+ 18k
0 – 0.6
0.7 – 1.6
1.7 – 2.2
2.3 – 2.6
2.7 – 3.1
2.7 – 3.1
0 – 51
52 – 131
132 – 176
177 – 206
207 – 237
207 – 237
OPEN/CLOSE
STOP
INPUT
PLAY/PAUSE
PLAY/PAUSE
VOLUME
I
J
K
SUB (1)
CB801
-21.4
<-15.2>
15.4
3.4
0
3.4
1.7
3.4
3.3
3.3
<3.3>
3.4
3.3
0
<3.3>
3.4
<3.3>
0
<3.3>
3.4
CB802
0
0
0
0
0
0
0
0
0
5.1
0
0
0
USB
0
0
0
5.1
5.1
0
0
0
0
< > the voltage is CRX-140.
<   >内の電圧はCRX-140です。
★ 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.
L
M
N
CRX-040/CRX-140/NS-BP80
IC801: M66003-0131FP-R
18 digit 5 x 7 segment VFD controller/driver
Display code
RAM
CGROM
(35-bit x 166)
44
SEG00
(8-bit x 60)
Segment
19
SEG25
Code
write
output
17
SEG26
circuit
CGROM
dot data
9
SEG34
CS
2
Serial
data
(35-bit x 16)
write
SCK
receive
3
Code/
circuit
SDATA
4
command
45
SEG35
control
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
Segment/
code
DIG13/
50
select
Digit
SEG40
select/
DIG14/
49
XIN
7
output
SEG39
Clock
timing
Display
generator
clock
scan pulse
circuit
DIG15/
XOUT
controller
48
6
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63
DIG00
Digit
RESET
1
output
circuit
Vcc1
8
53
DIG10
Vcc2
18
Vss
5
Vp
64
Page 68
L3
to MAIN (1)_W256
Page 68
L2
to MAIN (1)_W254
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● ⚠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、
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。
● 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。
73

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