Yamaha MCR-730, Service Manual

Page: 55 / 71

IC801
JK801
JK802
CB801
CB806
A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
DRX-730/NX-E700
55
SUB 2/2
5.0
~ -22.1
~ ~ ~ ~ ~ ~ ~ ~
-20.5 -20.6 -20.6 -20.6
-20.6 -22.2 -20.6 -20.5 -20.5 -20.6 -20.6 -20.5 -20.5 -20.6 -20.5 -22.3
-14.9
-20.5 -20.6 -20.5 -20.5 -20.5 -20.5
-20.5 -20.3
-20.6 -20.6
-20.6 -20.6 -20.6 -20.6 -20.6
-20.6
-22.2 -22.2 -22.2 -22.2 -22.2 -22.2 -22.2 -22.2 -22.2 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ -19.0 ~ -22.1 ~ -17.2 ~ -14.2 -14.9 -17.5 -17.2 18.9 -17.2
-22.2 -22.2 -22.2 -22.2 -22.2 -19.0 5.0
~
-17.2
-14.2
~
~
~
~
5.0
2.2
2.2
0
0
4.8
4.7
4.8
~
-22.2
-20.6
~
-18.9
~
-22.2
-17.2
-17.2
-17.5
-22.2
-20.6
-20.6
-20.3
0
0
0
0
0
0
0
3.5
0
5.0
0
5.0
3.5
0
5.0
0 0
3.9
0
5.0
-16.1
-22.3
11.5
4.8
0
0.3
4.9
0
4.9
0
0
PHONES
USB
PORTABLE
INPUT VOLUME
SUB (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
IC801
: 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
to MAIN (1)_CB20
Page 53 J6
to MAIN (1)_CB12
Page 53 H8