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Yamaha RX-V1800 Service Manual page 136

Av receiver/av amplifier
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A
B
C
RX-V1800/HTR-6190/DSP-AX1800
FL 1/2
1
5.0
5.0
-23.4
-25.5
-23.5
-20.9
2
5.0
5.0
-27.5
-23.5
-21.4
-23.0
3
4
Page 128
A5
to POWER (1)_CB12
W9001
-21.9
5
-25.6
-29.3
6
7
8
9
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# 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.
10
136
D
E
F
5.0
5.0
-23.5
-27.5
-26.7
-22.9
-27.3
21.4
-27.5
-23.5
-25.3
-21.4
-27.3
-23.5
FL DRIVER
-25.3
-23.3
-27.3
5.0
5.0
-25.3
-27.3
5.0
-27.5
-27.5
-25.3
0.1
-23.3
IC901
0.1
-27.0
-27.1
-19.3
4.9
-21.2
4.9
-19.3
2.4
-27.3
2.4
-27.5
0
-21.3
-21.5
-29.5
-23.5
-27.5
-23.5
-27.5
-22.9
-27.4
-21.4
-27.5
-27.5
-27.5
5.0
-25.5
0
-25.5
0
FL DRIVER
-23.4
4.9
-21.4
4.9
-23.4
2.5
-25.5
2.6
5.0
-27.5
0
-27.3
-27.0
G
H
I
2.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
-0.1
0
0
0
FL (1)
J
K
L
11.2
10.5
11.2
10.9
JK951
0.1
4.9
JK952
0
11.2
11.2
10.6
10.9
0.1
4.9
0
4.2
5.1
5.1
0
10.0
-9.2
0.1
0
2.6
-2.4
5.1
Page 126
I4
-9.7
4.9
CB968
9.5
0.1
to OPERATION (5)_CB809
0
5.1
RS-232C
W9002
Page 137
K4
to FL (2)_CB970
CB901
W9003
Page 126
K3
to OPERATION (4)_CB812
Page 126
B2
to OPERATION (1)_CB801
W9004
IC951: ADM222ARZ
High speed RS-232 line drivers/receivers
IC901, 902: PT6302LQ-008
VFD driver/controller IC with character RAM
+5V INPUT
0.1µF
VDD
VSS
V
0.1µF
C1+
CC
VEE
+5V TO +10V
RSTB
0.1µF
V+
VOLTAGE DOUBLER
C1–
DIN
8-bit
CLKB
SHIFT
C2+
+5V TO –10V
REGISTER
CSB
V–
0.1µF
VOLTAGE INVERTER
0.1µF
C2–
COMMAND
DECODER
T1
T1
T1
IN
OUT
TTL/CMOS
RS-232
*
INPUTS
OUTPUTS
T2
T2
T2
CONTROL
IN
OUT
CIRCUIT
R1
R1
R1
OUT
IN
TTL/CMOS
RS-232
OUTPUTS
INPUTS
**
R2
R2
R2
IN
OUT
ADM2xx
EN
(ADM242)
TIMING
GENERATOR 1
SHDN
(ADM222, ADM242)
GND
*
INTERNAL 400kW PULL-UP RESISTOR
OSCO
ON EACH TTL/MOS INPUT
OSCILLATOR
OSCI
**
INTERNAL 5kW PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
M
N
W9501
Page 122
C9
to FUNCTION (1)_CB405
FL (6)
SG1
CGROM
248 words x 35-bit
DCRAM
16 words x 8-bit
SEGMENT
DRIVER
CGRAM
8 words x 35-bit
SG35
ADRAM
AD1
16 words x 2-bit
AD
DRIVER
ADDRESS
AD2
SELECTOR
WRITE
READ
P1
ADDRESS
ADDRESS
COUNTER
COUNTER
PORT
DRIVER
P2
DIGITAL
CONTROL
GR1
GRID
DRIVER
DUTY
CONTROL
GR16
TIMING
GENERATOR 2

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Htr-6190Dsp-ax1800

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