Yamaha DSP-AX440, Руководство по обслуживанию

Страница: 82 / 140

RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
A
1
2
3
4
5
6
7
8
9
B C D E F G H I J K L
82
SCHEMATIC DIAGRAM (FUNCTION 2/2)
★
All voltages are measured with a 10M
Ω
/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.
IC822: TC74HC4053AF
Analog Multiplexer/Demultiplexer
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
IC602: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
IC603: 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
IC801: LA7956
Video Switch
1 2 3 4 5 6 7 8 9
VIDEO
OUT
A B VIN1 GND VIN2 VCC VIN3 VIN4
DRIVER
6dB
AMP
CONTROL
4 INPUT 1 OUTPUT
VIDEO SWITCH
IC821: 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
Point
2
Pin 13 of IC601 Point
3
Pin 12 of IC603
Point
4
Emitter of Q601 and collector of Q602
POWER ON
(Connect the power cord)
POWER OFF
(Disconnect the power cord)
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
to FUNCTION (7)
G5 Page 84
to VIDEO
D1
to FUNCTION (6)
E1
Page 81
to FUNCTION (1)
F2
to FUNCTION (4)
C3
Page 86
to MAIN (3)
H1
x: NOT USED
O: USED / APPLICABLE
P
age 86
to MAIN (2)
F6
P
age 86
to MAIN (1)
E1
Page 83
to OPERATION (1)
E8 Page 78
to DSP
E1
A
B
Y SELECTOR
Cb SELECTOR
Cr SELECTOR
4
A
4
2
3
B
5.6
13.4
13.4
13.3
12.6
5.6
7.3 6.8
6.8
0
0
0
0
0
0
0
0
0
0
5.6
4.9
4.6
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.0 4.0 4.0 4.0
4.9 4.9
6.4
0 11.5
6.4
6.4
6.4 6.4
7.0
7.4
7.1
0.1
0
5.8
11.5
11.5
0.9
0
0
0
0
0
0
0
0
0.1
4.9
4.9
0
0 0 0 0 0 0
0 0 0 0 0 0 0
0
0 0 0 4.9
4.9 4.9 4.5 4.9 4.9 4.9 4.9 4.9 4.9
4.3
4.9 4.9 4.9 4.8 4.8 4.8 4.6 2.4 2.3 4.7 0.3
4.9
4.9
4.8
4.8
4.8
4.8
4.7
0.6
1.6
1.2
0
0
0
0
0
0
1.8
4.7
0.6
0
0.6
0.6
2.9
2.3
4.9
4.9
4.9
-11.9
-11.9
-11.9
0
0
0
2.3 2.3
2.3 2.2 2.0
1.8
5.0 4.9 0 0 0 0
4.5 0
0 0
11.7
0
13.4
-4.9
-4.9
-4.9
-4.9
-4.9
5.0
5.0
5.0
4.9
4.9
4.9
4.8
0.2
0.2
0.7
0
0
0
0
0
0
0
0
0
5.0
0
5.0
0
0
0
0
0
0
0
0
to FUNCTION (4)
B3
C840
PS
VEE3
VIN3
VEE2
VIN2
VEE1
VIN1
GND
VOUT3
V+3
VOUT2
V+2
VOUT1
V+1
NJM2581M
10/63
Note : IC821 LA7104M for P.W.B. A to D version.
NJM2581M for P.W.B. E or later version.
C841
10/63
C842
10/63