Yamaha RX-V1800, Service Manual

Page: 129 / 181

CB201 CB202
IC201
IC202
IC205
IC204
IC201
IC201
IC201
IC203
IC207
IC206
A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
RX-V1800/HTR-6190/DSP-AX1800
129
★
All voltages are measured with a 10M
Ω
/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.
A-VIDEO 1/2
8.9
8.9
8.9
0
0
0
0.1
0.1
0.1
0
0
8.9
8.9
0
5.1 5.0
0 0 0
0 0 4.7
0.4
0.4
0
0
0
0 9.0
0
4.9
0
6.3
0
0
5.0
5.0
0
2.1
4.3
4.4
4.4
4.3
4.3
5.0 0
2.5
5.1 2.6 -0.2 2.7 2.7 0 4.9 4.9
2.6 2.6 2.5
0
-4.9
0
2.7 5.0
5.0
2.1
0
2.5
0
2.5
0
0
2.5
5.0
2.5
0
2.5
0
5.0
5.0
5.0
0
2.9
0
2.7
0
0
0
0
0
2.9
0
2.6
0
4.4
4.4
4.3
4.3
4.4
4.4
4.3
0
0 -4.9
3.6
3.6 3.1
4.9 3.6
0
-4.9
0
-4.9
0
5.1
0
5.1
0
5.1
3.7
3.7
3.7
3.7
3.6
0
D-1
POINT D-1 Pin 9 of IC202
1
2 35
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
34
32
33
31
30
29
28
27
26
25
24
23
22
21
20
19
CLAMP
CLAMP
IC207 : LA73054-TLM-E
Analog dual operational amplifier
2Step
Amp2
LPF1
2Step
Amp3
SYNC
SEP
LPF1
LPF1 CLAMP
LPF2
LPF1
LPF2
PEDESTAL
CLAMP
PEDESTAL
CLAMP
Y/C
MIX
C_OFFSET
DC_CTL
2Step
Amp1
LPF
LPF1
LPF2
2Step
Amp4
2Step
Amp5
PEDESTAL
CLAMP
REG
VCC
2Step
Amp5
75 ohms
DRIVER
75 ohms
DRIVER
75 ohms
DRIVER
75 ohms
DRIVER
75 ohms
DRIVER
75 ohms
DRIVER
IC206 : MM74HC4053SJX
Triple 2-channel analog multiplexer
16
11
10
9
7
VEE
8
GND
C
B
A
VCC
5
CX CY
1
BY
3 2
BX
IN/OUT
13
AY
12
AX
6
INH
Logic
Level
Conversion
Binary to
1 of 2
Decoders
with
INHIBIT
Logic
Level
Conversion
Logic
Level
Conversion
Logic
Level
Conversion
Binary to
1 of 2
Decoders
with
INHIBIT
Binary to
1 of 2
Decoders
with
INHIBIT
TG
TG
TG
TG
TG
TG
OUT/IN
BX or BY
15
OUT/IN
CX or CY
4
OUT/IN
AX or AY
14
IC203 : NJM2581M
Video amplifier
13
VOUT1
11 VOUT2
9 VOUT3
8 GND
10 V+3
14 V+1
12 V+2
2 NEE1
4 VEE2
6 VEE3
7
PowerSave
5 VIN3
1 VIN1
3 VIN2
75
Driver 6dB
AMP
BIAS
75
Driver 6dB
AMP
BIAS
75
Driver 6dB
AMP
BIAS
REF
6dB
6dB
6dB
6dB
6dB
6dB
I 2C BUS
Y/R IN1
Y/R IN2
Y/R IN3
Y/R IN4
Pb/G IN1
Pb/G IN2
Pb/G IN3
Pb/G IN4
Pr/B IN1
Pr/B IN2
Pr/B IN3
Pr/B IN4
Y/R OUT1
Y/R OUT2
Pb/G OUT1
Pb/G OUT2
Pr/B OUT1
Pr/B OUT2
ADDRESS
SDA
SCL
V+
GND
AUX 0
AUX 1
AUX 2
AUX 3
PORT 0
PORT 1
PORT 2
PORT 3
VREF
BIAS
DGND
V
+
GND
V+
Pb IN2 Pr IN2
Y IN1
Pb IN1 Pr IN1
PORT3
V+
ADR
PORT2
GND
SCL
SDA
DGND
VREF
V+
Pr OUT2
PORT1
PORT0
Pb OUT2
1 14
38 25
39 24
48 15 Y IN2
GND
Pr IN3
V+
Pb IN3
GND
Y IN3
V+
Pr IN4
GND
GND
AUX0 AUX1 Y OUT2 AUX2 AUX3 Pr OUT1 GND Pb OUT1 GND Y OUT1 V+ Y IN4 V+ Pb IN4
GND
IC201 : NJW1321FP1
Wide band video switch with I
2
C bus
30 29 28 26 25 24 23 22 21 20 19 17
DAC3
SW
INV
SW
INV
SW
SYNC
SEPA
DAC1
SW
SYNC
SEPA
INV
SW
INV
SW
I
2
CBUS
Decoder
DV2-OUT
SW
DV1-OUT
SW
HD2-OUT
SW
HD1-OUT
SW
V-Input
SW
H/V-
FREQ
Counter
V-FREQ
DET SW
DAC2
SW
H-FREQ
DET SW
V
Integral
H-INPUT
SW
V C/D
V-FREQ
SW
Clamp
Pulse
HD
Polarity
H-AFC
HVCO
CP
SW
H-FREQ
SW
2 u fH
H-Ramp H C/D
TEST DAC3 DAC1
V-SYNC
DAC2
H/
SYNC
DAC3 D2-OUT VD1-OUT SYNC1-IN DAC1 SYNC2-IN Address SW SCL SDA HD2-OUT Digital GND HD1-OUT
HD2-IN VD2-IN HD1-IN VD1-IN Analog GND AFC Filter HVCO VCC DAC2 VD3-IN HD3-IN CP-OUT
27
NC
18
NC
1 2 3 5 6 7 8 9 10 11 12 14 4 13
16
NC
15
NC NC NC
IC202 : TA1318AF
SYNC processor, frequency counter IC for TV component signals
IC204, 205 : TC74HC4052AF
Analog multiplexer/demultiplexer
16
VCC
6
INH
10 A
9 B
8
GND
7 VEE
12 0X
14 1X
15 2X
11 3X
1 0Y
5 1Y
2 2Y
4 3Y
LEVEL
CONVERTER
BINARY TO 1-OF-4
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
SW
SW
13 X-COM
3 Y-COM
INHIBIT
0
0
0
0
1
B
0
0
1
1
X A
0
1
0
1
X
0x, 0y
1x, 1y
2x, 2y
3x, 3y
NONE
INPUT & LINE
0dB
SELECTOR
LINE
SELECTOR
FREQUENCY
COUNTER
to A-VIDEO 2/2
to A-VIDEO 2/2
to D-VIDEO_CB122
J model
Page 132 A4
to D-VIDEO_CB121
Page 132 A3
J model