Yamaha DSP-AX1600, Руководство по обслуживанию

Страница: 109 / 151

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-V1600/DSP-AX1600
SCHEMATIC DIAGRAM (A-VIDEO 2/2)
109
★
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.
IC701, 703 : MM74HC4051SJX
8-Channel Analog Multiplexer
16
11
10
9
7
VEE
8
GND
C
B
A
VCC
4
Y7
1
Y4 Y5 Y6
12
Y3
2 5 15
Y2
CHANNEL IN/OUT
14
Y1
13
Y0
COMMON
OUT/IN
6 INH
Logic
Level
Conversion
Binary
to
1 of 8
Decoder
with
INHIBIT
TG
TG
TG
TG
TG
TG
TG
TG
3
IC705 : CD4051BNSR
Single 8-Channel multiplexer
CD4051B
11
10
9
6
A †
B †
C †
INH †
13 4 2 5 1 12 15 14
TG
TG
TG
TG
TG
TG
TG
TG
3
COMMON
OUT/IN
0 1 2 3 4 5 6 7
BINARY
TO
1 OF 8
DECODER
WITH
INHIBIT
LOGIC
LEVEL
CONVERSION
8 7
V
SS
V
EE
16
V DD
CHANNEL IN/OUT
†
All inputs are protected by standard CMOS protection network.
IC708, 716 : 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
IC709: LA73050-TLM-E
Analog Amp
35 N.C.
33 VOUT1
31 VOUT2
30 N.C.
29 VOUT3
32 GND
36
N.C.
34 +VCC1
2 N.C.
4 DCCNT1
6
VIN2
7 MUTE1
8 VIN3
5 GND
1 N.C.
3 VIN1
27 -VCC2
25 +VCC2
23
GND
22 VOUT5
21 N.C.
24 VOUT4
28 -VCC1
26 N.C.
10 N.C.
12 VIN4
14 GND
15 VIN5
16 MUTE2
13 DCCNT2
9 N.C.
11 N.C.
19 -VCC3
20 VOUT6
18
-VCC4
17 VIN6
DR 6dB
+Vcc
DR 6dB
DR 6dB
DR 6dB
+Vcc
DR 6dB
DR 6dB
IC710: LA7104M
Video Amp
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
IC712 : 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
IC713 : 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
IC714 : BD7851FP-E2
LED driver IC with built-in 16bit shift register
S_IN
OUT16
OUT15
OUT14
OUT13
OUT12
OUT10
OUT9
OUT8 OUT7
BD7851FP
OUT6
OUT4
OUT3
OUT2
OUT1
SOUT
CLOCK
Vcc 25
24
22
21
20
19
18
17
15
14 13
12
10
9
8
7
4
LATCH
Control circuit
Shift register
Output buffer p 5
6
R_lref
GND
LATCH
1
2
3
IC715 : LC74781JM-9798
On-Screen Display Controller LSI
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
XtalIN XtalOUT BLANK CVIN CVOUT CTRL2
21 2 3 5 15 13
VDD1
16, 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
Vertical
display
position
register Horizontal
display
position
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
ROM
Shift
register
Decoder
Sync
dis-
criminator
Composite
sync
signal
separator
control
Character
output dot
clock
generator
Sync
separator
CTRL1
4
1.7
1.0
4.8
-1.0
-1.9
4.2
4.2
-0.5
0.6
4.9
0.1
0
0
2.4
2.4
2.4
4.9
0
0
4.9
2.5
4.8
1.1
1.7
4.8
1.1
-0.3
-0.3
0.5
0
0.1
0.4
4.8
4.8
4.8
1.0
1.7
0
4.8
2.0
0.1
0
-0.1
0.6
1.0
4.9
0 0 0
1.0
4.8
4.8 4.8 4.8 4.8 0.2 0.2 4.9
1.4
0
0
0
0
4.8 4.8 0.2 0.2 0.2
4.8
0.2
0.2
0.2
0.2
2.6
2.7
2.7
2.7
0.1
0.1
0.1
0.1
-4.8
4.8
4.8
0.2
0.2
0.2
0.2
0.1
0 0
0
0
0.1
0.1
0.1
0.1
-4.8
4.8
4.8
0.2
0.2
0.2
0.2
0.1
0 0
0
0
0.1
0.1
0.1
0.1
-4.8
9.0
9.0
0.1
0.1
0.2
0.2
0.1
0 0
0
0
2.7
5.0
0
0
0
0
0
0
4.9
4.8
4.9
-0.9
9.0
0.2
4.9
0.2
0.2
4.9
0.2
-0.3
0
0
0
4.9
-4.8
5.0
0.2
0.2
4.8
4.9
0.1
0.2
0
0
4.8
4.8
4.8
0
0
0
0
0.9
0
0
4.5
5.0
4.5
4.5
4.5
4.5
0
0
0
0
0
0
0
0
0
4.5
0
4.5
4.9
4.5
4.5
4.5
4.5
0
0
0
0
0
0
4.5
4.5
0
0
0
4.5
4.8
0
4.8
-4.7
-4.7
-4.7
0
0 0
0
4.8
4.8
-4.7
-4.7
-4.7
4.5
4.5
4.5
4.5
0
0
0
0
0
0
4.5
4.5
A-3
Page 103
to OPERATION (3)_CB906
F4 Page 101
to FUNCTION (1)_CB311
G2
P
age 105
to PO
WER (7)_CB325
I2
Page 106
to INPUT (5)_CB317
L2 Page 108
to A-VIDEO (1)_CB602
H7
A-VIDEO (2)
INPUT
SELECTOR
INPUT
SELECTOR
INPUT
SELECTOR
SIGNAL DETECT
OSD
IC
CLAMP
POINT A-3 Pin 3 of IC715