Yamaha HTR-5740 Panduan Servis - Halaman 32

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Halaman Cetak
Yamaha HTR-5740 Panduan Servis
A
B
C
SCHEMATIC DIAGRAM (OPERATION)
HTR-5750
1
2
~
3
-22.0
-26.0
-22.0
-24.1
-18.2
-18.2
~
4.8
4.8
-18.2
~
~
~
-22.0
4
-20.1
-26.0
-25.8
-22.1
~
5
6
7
8
9
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
10
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
s
D
E
F
RX-V450/HTR-5740/DSP-AX450
FL DISPLAY
4.8
4.8
~
~
-18.2
-20.3
-26.0
-24.1
~
-22.1
-22.1
FL DRIVER
-22.1
-24.1
~
4.8
4.8
4.8
2.1
2.1
~
~
0
-18.1
-16.0
4.8
4.8
4.8
4.8
4.8
0
0
5.1
5.1
Page 79
J10
to FUNCTION (2)
G
H
I
to Power Transformer
-20.8
-22.5
-24.0
0
0
0
0
0
0
0
0
0
4.7
Page 78
L3
to FUNCTION (1)
J
K
L
IC801: M66003-0101FP
FL Display Driver
CS
2
Serial
data
receive
SCK
3
circuit
SDATA
4
XIN
7
Clock
timing
generator
clock
XOUT
6
RESET
1
Vcc1
8
Vcc2
18
Vss
5
Vp
64
x: NOT USED
O: USED / APPLICABLE
0
0
0
0
M
N
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
Display code
RAM
CGROM
(35 bit x 166)
44
SEG00
(8-bit x 60)
Segment
SEG25
19
Code
output
write
17
SEG26
circuit
CGROM
dot data
9
SEG34
(35 bit x 16)
write
Code/
command
45
SEG35
control
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
code
Segment
DIG13/
select
50
digit
SEG40
select/
DIG14/
49
output
SEG39
Display
circuit
DIG15/
controller
scan pulse
48
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63
DIG00
Digit
output
circuit
53
DIG10
81