Yamaha RX-V1500, Руководство по обслуживанию

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SCHEMATIC DIAGRAM (VIDEO)
INPUT SELECTOR
INPUT SELECTOR
SELECTOR
ON
SCREEN
I 2 C Bus Interface
Output
Data Latch
8
Output Data
Reset Input Data
I/O Port
Shift Register
3 SDA
1 SO
16
CS0
15
CS1
14
CS2
12
D7
11
D6
10
D5
9
D4
7
D3
6
D2
5
D1
4
D0
2 SCL
8 GND
13 VDD
IC551: M62320FP
I/O Expander
8
I/O Setting
Register
8
Input/Output
8
I/O Setting
Register
8
8
Power On
Reset
IC552: LC72722
RDS Decoder
+
REFERENCE
VOLTAGE
57kHz
bpf
(SCF)
CCB
TEST
PLL
(57kHz)
ANTIALIASING
FILTER
SMOOTHING
FILTER
RAM
(24 BLOCK DATA)
ERROR CORRECTION
(SOFT DECISION)
SYNC/EC
CONTROLLER
SYNC
DETECT-1
DATA
DECODER
CLOCK
RECOVERY
(1187.5Hz)
MEMORY
CONTROL
OSC/DIVIDER
VREF
CLK(4.332MHz)
SYNC
DETECT-2
VDDA
VSSD
VDDD
RDS-ID
SYNC
SYR
VSSA
MPX IN
DO
CL
DI
CE
T1
T2
T3
T4
T5 T6 T7
X IN
VREF FL OUT C IN
X OUT
3 14
15
19
18
24
1 5 6
4
2
20
21
22
23
7
8
9
10
11 16 17 13 12
IC601, 612: 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, 603, 703: MM74HC4051SJX
8-Channel Analog Multiplexer
16
11
10
9
7
VSS
8
GND
C
B
A
VCC
4
Y7
1
Y4 Y5 Y6
12
Y3
2 5 15
Y2
IN/OUT
14
Y1
13
Y0
COMMON
OUT/IN
6
INH
Logic
Level
Conversion
Binary to 1
of 2 Decoders
with INHBIT
TG
TG
TG
TG
TG
TG
TG
TG
3
IC607, 610: MM74HC4053SJX
Triple 2-Channel Analog Multiplexer
16
11
10
4
7
OUT/IN
AX or AY
VSS
8
GND
C
B
A
VCC
3
CY
5
CX
1
BY
2
BX
IN/OUT
13
AY
12
AX
TO
Logic
Level
Conversion
Logic
Level
Conversion
Logic
Level
Conversion
OUT/IN
CX or CY
OUT/IN
BX or BY
9
INH
Logic
Level
Conversion
Binary to 1
of 2 Decoders
with INHBIT
Binary to 1
of 2 Decoders
with INHBIT
Binary to 1
of 2 Decoders
with INHBIT
YG
TG
TB
TC
TG
IC608: TC74HCU04AFEL
Hex Inverters
1A
1Y
2Y
VCC
6A
1
2
3
4 11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 4Y 8
9
10
GND
IC609: LA7109
75
Ω Video Driver
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
IC611: LC74781-9798
On Screen Display Controller
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
Synchronisation
signal generator
Character output control
Background control
Video output control
Display
control
register
RAM
write
address
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
IC701: LA7108M
Video Amp
IC705: BU2092
Serial In/Parallel Out Driver
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
x: NOT USED
O: USED / APPLICABLE
INPUT SELECTOR
P
age 80 to FUNCTION
M3
P
age 83 to PO
WER (3)
G7
P
age 85
to CONVERSION
D9
P
a
ge 85
to CONVERSION
C1
P
age 83
to PO
WER (7)
G3
P
age 79 to FUNCTION
B1
P
age 79 to FUNCTION
C1
Page 81
to OPERATION (3)
I3
Page 80
to FUNCTION
F10 Page 80
to FUNCTION
E10
Point 4 Pin 3 of IC511
★
All voltages are measured with a 10M
Ω
/V DC electronic 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.
15
3
1
2
4
5
11
10
7
8
13
12
4
8
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-V1500/DSP-AX1500
84
4
5.5
5.5
5.5
5.5
0
0
5.5
0
0
0
5.5
5.4 11.5
5.6
5.2
0
5.6
0
0
4.0
0
5.5
0
0
0
0
0
0
-5.0
0
5.6
0
0
0.2
0
0
0.2
5.6
0
0
0
4.0
0
0
0
0
4.4
5.5
0.1
0.1
5.4
0.5
-5.0
5.5
0
0.1 0.1 0.1 0.1 4.9
0.2 5.6 5.6 0 4.5 0.2 4.0 4.0
-5.0
0
5.4
1.1
0.1
0.1
5.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0
0
0
0
0.1
0.1
5.3
0.1
0
0
0
0
4.0
-4.8
0
0
-4.8
3.9
-4.8
0
0
0
0
0
-4.8
5.3
0.1
0.5
5.3
0
0
0
5.3
0
0
0
5.3
0
5.3
4.8
4.8
4.8
-4.8
5.3
0
1.1
1.1
1.4
4.8
4.8
5.3
0.1
0.1
0
0
-4.8
0 0
0
5.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0.1
0
0
0
5.3
0
0
0
1.4
0
0
-4.8
5.3
0.4
0.1
5.3
-0.6
0.1
5.3
0.1
0
0
-4.8
1.4
0
0
5.3 1.1 0.1 0.1 0.1 0.5 0.5 3.9
1.4 1.1 1.1 1.1
0 0
-4.8
0
1.1
1.1
5.3
1.1
0.1
0.5
5.3
1.1
1.1
5.3
1.8
-0.6
0
5.2 0 0 5.2 0 0 1.8 5.2 2.1 5.2 0.9
2.6 2.7
0
5.3 2.6
2.6
4.8 4.9
0
5.2
0
-0.5
-0.5
0.4
-0.4
-0.4
0.9
0.9
5.3
0.3
0
4.6
4.6
-1.8
-1.1
5.3
5.3
2.9
0.1 0
0
0.1
0.1
0 0
0 3.9 4.4
4.4 0 4.8
3.9
4.8
0.1
0
2.9
2.8
2.9 2.9
FRONT R
FRONT L
VIDEO(6)
VIDEO(5)
VIDEO(2)
VIDEO(3)
VIDEO(4)
VIDEO(8)
VIDEO(1)
VIDEO(7)