Yamaha RX-V559 Service Manual page 86

A B C
RX-V559/HTR-5950/DSP-AX559
OPERATION HTR-5950
1
2
3
4
5
6
7
OPERATION (1)
8
OPERATION (6)
9
10
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
86
D E F
FL DRIVER
Page 84
Page 81 B5
to FUNCTION (1)_CB205
to DSP_CB5
G H I
PORTABLE
OPERATION (5)
OPERATION (3)
E7
IC301 : M66003-0131FP
FL display driver
Display code
RAM
(8-bit x 60) (35 bit x 166)
Code
write
Serial dot data
CS 2 data (35 bit x 16)
write
SCK 3 receive
Code/
circuit
SDATA 4 command
control
circuit
code
select
XIN 7 Clock
timing Display
generator clock controller scan pulse
XOUT 6
RESET
1
Vcc1 8
Vcc2 18
Vss 5
Vp 64
J K
to POWER CABLE
Page 87
to MAIN (1)_W1029
IC302 : TC4013BP
Dual D-type flip flop
RESET1 4
CGROM
44 SEG00
SET1 6 1
Segment 19 SEG25
output
SEG26
17
circuit DATA1 5
CGROM
9 SEG34 2
CL
CL
45 SEG35 CL
CL
DIG11/
52
SEG42 CLOCK1 3 CL
DIG12/
51
SEG41 CL
Segment DIG13/
50
SEG40
digit
RESET2 10
select/ DIG14/
49
output SEG39
circuit DIG15/ SET2 8
48 13
SEG38
DIG16/
47
SEG37 9
DATA2
DIG17/ 12
46
SEG36
CL CL
63 DIG00 CL
Digit CL
output
CLOCK2 11 CL
circuit
53 DIG10
CL
VSS 7
14
VDD
L M N
to POWER TRANSFORMER
220K
OPERATION (4)
H8
Q1
Q1
Q2
Q2