Yamaha RX-V557 Service Manual page 85

A B C
SCHEMATIC DIAGRAM (OPERATION) HTR-5850
1
2
-26.2
-24.2
-22.5
-28.1
-24.3
-28.1
-24.4
3
-24.3
-20.7
-18.9
-18.9
-26.3
-17.0
-18.9
-26.2
-26.2 -26.2 -26.2
-26.2
4
5
6
7
8
9
10
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
★ 電圧は、内部抵抗10MΩの電圧計で測定したものです。
# Components having special characteristics are marked s and must be replaced
★ s
with parts having specifications equal to those originally installed. トに記載されている部品を使用してください。
# Schematic diagram is subject to change without notice.
★ 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。
D E F
RX-V457/HTR-5840/DSP-AX457
FL DISPLAY
-26.1
-22.6
-26.3
-24.4
-24.4
-22.6
-20.7
-24.4
-26.1
4.8
2.1
2.1
-22.5
0
FL DRIVER
4.8
4.8
4.8
4.8
BASS/TREBLE
SW812~SW815
RX-V457 B, G, E models
HTR-5840 B, G, E models
HTR-5850: Page 89 H9
RX-V457/HTR-5840/DSP-AX457: Page 90 H9
to SUBTR (2)
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
G H
OPERATION (1)
OPERATION (2)
AC5.6
to POWER
TRANSFORMER
-24.4
OPERATION (5)
-18.9
OPERATION (3)
Page 83 J3
to FUNCTION
I J K
OPERATION (4)
IC801: M66003-0101FP
FL Display Driver
Display code
CGROM
RAM
44 P35
(8-bit x 60) (35 bit x 166)
Segment 19 P10
Code
output
write 17 P9
circuit
CGROM
dot data 9 P1
/CEFL 2 Serial (35 bit x 16)
data write
receive
CKFL 3
Code/
circuit
DTFL 4 command
45 P36
control
circuit
52 G12
51 G13
code
Segment
50 G14
select
digit
select/
49
XIN 7
Clock output
timing Display
generator
clock controller scan pulse circuit
XOUT 6 48
47 P38
46 P37
G1
63
Digit
/RESET 1 output
circuit
VDD 8
53 G11
Vcc2 18
Vss 5
Vp 64
L M N
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
85