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Yamaha RX-V1800 Service Manual page 130

Av receiver/av amplifier
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A
B
C
RX-V1800/HTR-6190/DSP-AX1800
A-VIDEO 2/2
1
Page 126
E4
to OPERATION (3)_CB807
2
JK201
3
0
4
0
-4.7
0.1
5
3.1
3.6
3.6
6
0
3.1
3.6
0
0
3.6
7
0
3.6
3.1
0
3.6
4.9
0
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
130
D
E
F
INPUT SELECTOR
0
5.0
0
0
0
0
0
0
0
0
0
4.9
-4.8
0.1
0
0.1
0
5.0
0
0
0
0
0
0
0
0
0
4.9
0.1
-4.8
0
0.1
0
9.0
0
0
9.0
4.9
0
0
4.9
0
0
5.0
0
0
0
9.0
0
0.2
0.1
-4.8
0.2
0
0.2
-4.7
5.0
-4.7
0.2
0.1
4.9
5.0
0
-4.7
5.0
0
0
IC220
0
0
3.6
IC218
0
0
-0.6
0
IC220
0
IC218
0
-4.8
0
IC218
0
5.0
-0.6
0
0
IC218
3.6
0
4.9
-0.6
0
IC218
3.6
0
4.9
0
-4.7
IC218
-4.7
0
3.6
0
IC219
0
3.6
0.7
0.7
5.0
IC219
0
0
0.7
0.5
3.6
0.5
0
0.5
0.5
0.1
IC219
0
0
3.6
0
4.9
-4.8
4.9
0
4.9
G
H
I
0
4.9
0
0
0
0
5.0
0
3.6
1.6
3.6
0
4.6
4.9
4.9
5.0
4.9
4.9
0.1
4.9
4.6
0.1
4.9
4.6
5.0
SIGNAL DETECT
IC223
5.0
2.5
2.5
2.5
2.5
2.5
2.5
0
0
0
0
0
5.0
0
0
0
5.0
0
5.0
0
0
0
0
0
0
0
0
0
0
-4.8
0
0
4.9
5.0
4.3
0.9
0.5
4.3
0
0
-0.6
-1.0
1.7
-0.6
-0.4
0
0.9
1.6
0.9
A-2
0
5.0
2.4
4.9
5.0
2.5
0
0
5.0
4.9
0
2.4
2.5
2.0
0.5
4.9
0.1
0.9
0
0
5.0
1.7
5.0
OSD IC
1.7
5.0
1.0
0.5
-0.2
POINT A-2 Pin 3 of IC225
J
K
CB203
Page 122
I9
to FUNCTION (1)_CB410
W2001
Page 128
H5
to POWER (3)_CB23
CB204
Page 135
L3
to D-VIDEO_CB185
to A-VIDEO 1/2
IC220: TK15420M
Video amplifier
OUT A
1
8
VCC
–IN A
2
7
OUT B
+ –
+ –
+IN A
3
6
–IN B
VEE
+IN B
4
5
to A-VIDEO 1/2
IC225: LC74782JM-8A16-TLMC
The on-screen display controller LSI
9
Serial
8-bits
latch
11
parallel
+
command
converter
decoder
Horizontal
10
character
size
register
23
Horizontal
size
counter
24
1
12
8
Horizontal
character
size
Horizontal
6
register
character
size
7
register
17
Horizontal
Horizontal
character
character
18
size
size
register
register
19
20
22
IC223: TC74VHCU04FT
IC222: LC709004A-TLM-E
Hex inverter
I/O-expander for microcontroller
1A
1
14
VCC
DIN
2
Serial/parallel converter/shift register
6A
1Y
2
13
CLK#
3
2A
3
12
6Y
CS#
4
5A
2Y
4
11
3A
5
10
5Y
RES#
I/O control/output register
21
3Y
6
9
4A
A
Y
7
8
L
H
GND
4Y
H
L
port 0 I/O buffer
port 1 I/O buffer
24
17
15
8
L
M
N
IC218: LA73050-TLM-E
6-channel 75-ohm video driver
IC219: LA7106M-TLM-E
Analog dual operational amplifier
VIN1+
1
16
+VCC
NFB1
2
6dB
DR
15
VOUT1
3
MUTE1
14
GND
VIN2+
13
VOUT2
4
6dB
DR
NFB2
5
12
DR CTL
-VCC1
6
11
VOUT3
VIN3+
7
6dB
DR
10
MUTE2
NFB3
8
9
-VCC2
IC211, 213: MM74HC4051SJX
8-channel analog multiplexer
CHANNEL IN/OUT
VCC
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
16
4
2
5
1
12
15
14
13
TG
TG
A
11
TG
Binary
TG
COMMON
B
10
3
to
Logic
OUT/IN
1 of 8
TG
Level
Decoder
Conversion
with
TG
C
9
INHIBIT
TG
6
TG
INH
8
7
GND
VEE
IC215: CD4051BNSR
Single 8-channel multiplexer
CHANNEL IN/OUT
V DD
7
6
5
4
3
2
1
0
16
4
2
5
1
12
15
14
13
TG
TG
A
†
11
TG
TG
B
†
10
BINARY
COMMON
TO
3
LOGIC
OUT/IN
1 OF 8
LEVEL
TG
DECODER
CONVERSION
WITH
C
†
9
INHIBIT
TG
TG
INH
†
6
TG
CD4051B
†
All inputs are protected by standard CMOS protection network.
8
7
V EE
V SS
VSS1
1
24
VDD1
Xtal
IN
2
23
RST
Xtal
3
22
CTRL3
OUT
CTAL1
4
21
CTRL2
Vertical
Horizontal
Vertical
31 inking
Display
RAM write
character
display
display
3nd inversion
control
address
BLANK
5
20
SEP
size
position
position
control
register
counter
IN
register
register
register
register
6
19
SEP
OSCIN
OUT
7
18
OSC
OUT
SEPC
Vertical
31 inking
Vertical
CHARA
size
Horizontal
3nd inversion
Display RAM
8
17
SYN
IN
dot counter
counter
dot counter
control
register
CS
9
16
VDD1
SCLK
10
15
CV
IN
SIN
11
14
NC
31 inking
31 inking
VDD2
12
13
CV
OUT
3nd inversion
3nd inversion
control
control
register
register
Character
Line
Decoder
control
control
counter
counter
Font RAM
Character output
Shift
Synchronization
Timing generator
control
register
signal generator
Background control
Video output control
21
4
2
3
5
15
13
IC221, 224: MM74HC4053SJX
Triple 2-channel analog multiplexer
IN/OUT
VCC
CY
CX
BY
BX
AY
AX
16
3
5
1
2
13
12
14
DOUT
15
VDD
Logic
Binary to
TG
Level
1 of 2
OUT/IN
11
19
VSS
A
Conversion
Decoders
14
AX or AY
with
TG
INHIBIT
Logic
B
10
Level
Binary to
TG
OUT/IN
Conversion
1 of 2
15
BX or BY
Decoders
TG
Logic
with
C
9
Level
INHIBIT
TG
Conversion
OUT/IN
4
Binary to
CX or CY
1 of 2
TG
Logic
Decoders
INH
6
Level
with
Conversion
INHIBIT
8
7
GND
VEE

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Htr-6190Dsp-ax1800

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