Yamaha HTR-5280 - AV Receiver - 5.1 Channel, Service Manual

Page: 53 / 75

Y-INPUT
SELECTOR
A
1
2
3
4
5
6
7
8
9
B C D E F G H I J K L
RX-V800/RX-V800RDS/HTR-5280/DSP-AX8
★
All voltage are measured with a 10MΩ /V DC electric 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.
E-66/J-62
SCHEMATIC DIAGRAM (VIDEO)
Point
1
Pin 3 of IC610
C721
100/16
C713
C722
0.1/16
R721
1.0
IC601: TK15420M
Video Amp
– +
1
2
3
4 5
– +
6
7
8 OUT A
–IN A
+IN A
VEE
VCC
OUT B
–IN B
+IN B
IC602, IC603, IC702: TC74HC4051AP
Analog Multiplexer/Demultiplexer
IC607, IC752: TC74HC4053AP
Analog Multiplexer/Demultiplexer
IC608: TC74HCU04AP
Hex Inverters
IC610: LC74781-9798
On Screen Display Controller
IC609: LA7109
75Ω Video Driver
IC611: BU2092
Serial In/Parallel Out Driver
IC751: LA7104M
Video Amp
IC701: LA7108M
Video Amp
16
VDD
6
INHIBIT
11
15
14
9
A
C
B
8
VSS
7
VEE
12
0X
13
1X
2
0Y
1
1Y
5 0Z
3
1Z
LEVEL
CONVERTER
10
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
4
Z-COM
X-COM
Y-COM
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
1A
1Y
2Y
V
DD
6A
1
2
3
4 11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 V
SS
4Y 8
9
10
35 VOUT1
33 VOUT2
31
VOUT3
30 MUTE4
29 -VCC4
32 DR CTL2
36
+VCC1
34 GND
2 NFB1
4
VIN2+
6 -VCC1
7
VIN3+
8
NFB3
28 N.C.
27
N.C.
26 +VCC2
9
N.C.
10 N.C.
11
VIN4+
5 NFB2
1
VIN1+
3
MUTE1
DR 6dB
DR 6dB
DR 6dB
25 VOUT4
23 VOUT5
21
VOUT6
20 MUTE3
19
-VCC3
22 DR CTL1
26
24 GND
12 NFB4
14
VIN5+
16 -VCC2
17
VIN6+
18 NFB6
15 NFB5
11
13
MUTE2
DR 6dB
DR 6dB
DR 6dB
CS 9
RST 23
VSS1 1
SIN 11
SCLK 10
OSCIN 6
OSCOUT 7
SYNIN 17
SEPC 18
SEPOUT 19
CHARA 8
VDD2 12
SEPIN 20
CTRL3 22
4
CTRL1 XtalIN XtalOUT BLANK CVIN CVOUT CTRL2
21 2 3 5 15 13
VDD1 24
Serial
parallel
converter
8-bits
latch
+
command
decoder
Horizontal
character
size
register
Horizontal
size
counter
Horizontal
display
position
register
Horizontal
dot
counter
Vertical
display
position
register
Vertical
dot
counter
Blinking
and inversion
control
register
Blinking
and inversion
control
circuit
Blinking
and inversion
control
register
Blinking
and inversion
control
register
Character
control
counter
Line
control
counter
Timing generator
Synchronization
signal generator
Character output control
Background control
Video output control
Display
control
register
RAM
write
adress
counter
Display
RAM
Vertical
character
size
register
Vertical
size
counter
Decoder
Font
RAM
Shift
register
Decoder
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
15 VOUT1
13
VOUT2
11 VOUT3
10 MUTE3
9 -VCC2
12 MUTE2
16 +VCC
14
GND
2
NFB1
4
VIN2+
6
-VCC1
7
VIN3+
8 NFB3
5 NFB2
1 VIN1+
3 MUTE1
DR 6dB
DR 6dB
DR 6dB
1 Vss
2 DATA
3 CLOCK
4 LCK
5
Q0
6
Q1
7
Q2
8 Q3
9
Q4
18 VDD
17 OE
16 Q11
15 Q10
14
Q9
13
Q8
12
Q7
11 Q6
10
Q5
Control
Circuit
Output Buffer (Open Drain)
Latch
12 Bit Shift Register
15
VOUT1
13
VOUT2
11 VOUT3
10 MUTE2
9 -VCC2
12 DR CTL
16 +VCC
14
GND
2 NFB1
4
VIN2+
6
-VCC1
7
VIN3+
8 NFB3
5 NFB2
1 VIN1+
3 MUTE1
DR 6dB
DR 6dB
DR 6dB
C265
2200/6.3
C266
s19
C-INPUT
SELECTOR
ON
SCREEN
INPUT SELECTOR
Y SELECTOR
Cb SELECTOR
Cr SELECTOR
D5
E-66/J-62
E-67/J-63
A5
E-66/J-62
C1
E-62/J-58
I6
E-62/J-58
I3
4.9 0 -4.8 0 0 1.0 3.2 3.1 4.9 0 0 0
0
0
0
0
0
0
0
0
0
4.9
0
0
0
0
0
4.9
0
0
0
-4.9
-4.9
-0.1
3.2
-0.1
3.1
4.9
0.4
1.0
0
0
0
4.9
4.9
0
0
0
9
-4.8
0
0
0
4.9
-4.8
4.9
0
0
0 0
0
0
0
0
0
0 0
0
0
0
0
0
0 0
0
0
0
0
0
0 0 0
0 0
0
4.9
0
0
0
0 0
0
0
1.6
-4.8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.8
1.0
1.0
1.0
1.6
1.0
0
-4.8
0
0
-4.8
0
4.9
4.9
4.9
0
0
4.9
0
0
0
0 0
0
0
0
4.3
4.3
0 0
4.8
4.9 4.5
4.5
4.9
0
0
4.5
4.5
4.9
4.9
0
4.8
2.6
4.9
2.6
2.6 2.6
2.6 2.6
4.9
0
0
4.9
4.9 4.9 4.9
0
4.9 4.9
0
2.0 2.0
0.9
0
1.7
4.9
4.8
0
2.3
2.5
0 4.9 2.4 2.5
0
0
4.9
0
4.9
0 0
0
0 0 3.1
3.1
0.8
-0.6
-0.6
0
0
-0.5
4.9
0.8
-0.5
0.8
0.2
4.3
4.3
-1.6
-0.9
4.9
1.0
1.0
1.0
4.9
1.0
0.4
4.9
0.7
0
0
0
-0.7
1.7
1.7
4.8 0
0
0
-4.7
-4.7
0
0
3.1
0
0
0
0
0
3.1
0
0
-4.7
0
4.8
-0.1
-0.1
3.1
-4.7
-4.7
-4.7
4.8
0
4.8
-4.7
3.1
-0.1
-0.1
46.6
47.1
46.5
0
46.1
25.4
46.6
45.2
45.8
1.0
0
46.4
-0.6 0
-0.6
45.1
0
45.2
45.6
1.0
0
0
46.0
-0.6
-0.6
0
45.2
0
-0.6
45.1
45.1
-0.6
1.0
46.1
45.1
0
-11.9
0
1.0
0
1.0
0
1.0
0
1.0
0
1.0
45.7
46.5
0
45.7
45.0
-0.6
45.0
0 0
45.0
-0.6
1.0
45.2
46.1
1.0
0
46.6
-0.6
-0.6
45.2
0
0
-11.9
1
FRONT L
CENTER
REAR L
s20
22P/630
s20
22P/630
R254, 261
270
HC65527
270
HC65527
2200/6.3
UR81922
2200/6.3
UR81922
2200/6.3
UR81922
2200/6.3
UR81922
20
C266
R268, 275, 282
19