Yamaha RX-V2400 Service Manual page 91

A B C
SCHEMATIC DIAGRAM (OPERATION)
1
2
-25.7 2400 only
3
-30.5
-33.3
4
5.4
-30.8
-30.5
5
6
Page 89 K1
to FUNCTION
7
8
9
10
D E F
FL DISPLAY
5.1 0 5.1
IR
-33.1 -28.2
REMOTE -30.7 -33.1
-23.9 -28.3
-23.9 -28.3
-26.1 -21.6
FL DRIVER
-33.1 -23.6
-33.1 -21.3
-33.1 -33.1
-30.6 5.4
2.3
-28.3
-28.3 2.4
5.4
-25.6 0
-28.2 4.9
-30.8
-28.7 4.9
-30.6
-26.3 3.2
-30.8 3.1
IC851: M66003-0101FP IC853: SN74AHCT1G32DCKR
FL Display Driver 2-Input or Gate
Display code A 1
RAM CGROM
(35 bit x 166) 44 SEG00
(8-bit x 60) B 2
Segment 19 SEG25
Code
GND 3
output
write 17 SEG26
circuit
CGROM
9 SEG34
CS 2 Serial dot data
data (35 bit x 16)
receive write
SCK 3
Code/
circuit
SDATA 4
command
SEG35
control 45
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
code DIG13/
Segment
select 50
digit SEG40
select/ DIG14/
49
XIN 7 SEG39
Clock output
timing Display
generator
clock controller scan pulse circuit DIG15/
XOUT 6 48
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63 DIG00
Digit
RESET output
1
circuit
Vcc1
8 DIG10
53
Vcc2 18
Vss 5
Vp 64
G H
Page 89 I1
to FUNCTION
INPUT
SELECTOR
5.4 5.4 5.4
-28.5 -28.7 -25.6
-28.6 -26.1 -26.1
5.4 5.4
-28.3 -28.3
-28.5 -28.5
3.2 4.8
3.6 3.1 4.7
3.5
IC855: µPC4570G2
IC854: NJM4556AL
Dual OP-Amp Dual OP-Amp
V+
8
5 Vcc OUT 1
1
–IN 1 2
2, 6 OUTPUT + – + –
4 Y
–INPUT
+IN 1 3
1, 7
+INPUT
3, 5
–V 4
CC
V–
4
I J K
RX-V2400/RX-V2400RDS/DSP-AX2400/RX-V1400/RX-V1400RDS/HTR-5690/DSP-AX1400
1 4.9
2 3
0.1 0.3
4 0
0.3
0
4.9
HEADPHONE AMP
9.7 9.0
9.0
4 8
0 2
3 0
0
0
0.7
0
0
0.7
0
6
0 7
0
5
0 4
-9.4
-9.7 -9.4
11.5
11.5
0
0
0
0
0
0
0
-12.0
8 +V
CC
7 OUT 2
6 –IN 2
5 +IN
2
2400 only
REC OUT
SELECTOR
# 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.
L M N
2400
x: NOT USED
O: USED / APPLICABLE
1400
MIC
x: NOT USED
O: USED / APPLICABLE
91