Yamaha HTR-5740 Manual de servicio - Página 30

Navegue en línea o descargue pdf Manual de servicio para Receptor Yamaha HTR-5740. Yamaha HTR-5740 39 páginas. Av receiver/av amplifier

Imprimir página
Yamaha HTR-5740 Manual de servicio
A
B
C
SCHEMATIC DIAGRAM (FUNCTION 2/2)
HTR-5750
1
2
4.9
-4.9
4.8
4.9
4.9
0.7
0
4.9
3
4.9
-4.9
4.9
Y/Cb/Cr
4.9
SELECTOR
0
0
0
4.9
0
-4.9
0
0
0
4.9
0
-4.9
0
0
0
4.9
0
-4.9
4
0
4.9
0
0
0
5
[Except DSP-AX450]
6
C-INPUT
SELECTOR
7
Y-INPUT
SELECTOR
11.5
5.9
5.9
8
5.2
6.5
6.9
0.1
0
11.5
5.9
5.9
6.5
5.2
6.9
0.1
0
9
4.9
0.1
4.9
0.1
0.1
0.1
-0.4
0.1
4.5
-0.6
4.5
-1.1
4.9
0.1
0
0
-4.9
0.3
-4.9
0.3
-0.4
0.1
10
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
s
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
D
E
F
RX-V450/HTR-5740/DSP-AX450
HTR-5750
s16
s17
s18
s19
s20
s56
s57
s58
s53
s54
RX-V450/HTR-5740/DSP-AX450
s16
s17
s18
s19
s20
s56
s57
s58
s52
s53
s54
x: NOT USED
O: USED / APPLICABLE
INPUT
SELECTOR
11.2
5.5
5.5
4.9
6.1
6.6
0.1
0
11.2
7.1
6.4
4.5
4.9
4.9
0
0
0
0
0
0
0
0
-4.9
0
0
0.4
0
0
0
4.9
0
0
0
1.5
S-SIGNAL DETECT
4.9
2.7
2.7
0
2.7
2.6
4.9
3.6
0.1
0
4.9
0
0.1
0
0.1
0
0.1
0
Y/C SEPARATION
4.5
4.9
Y/C MIX
4.9
4.9
4.9
4.9
0
0
0.4
1.0
0.1
-0.6
-0.3
0.4
0.4
0
0.2
0
0.1
G
H
U,C
T
K
A
R549
X
100K
100K
100K
RD35810
RD35810
RD35810
R553
100K
X
X
X
RD35810
R552
100K
X
X
X
RD35810
R555
X
100K
100K
100K
RD35810
RD35810
RD35810
CB511
X
X
X
X
SW901
X
X
X
X
W513
X
X
X
X
CB512
V782550
V782550
V782550
V782550
T601
WC71660
WC71670 WC71660 WC71670
T602
WC71680
WC71690 WC71680 WC71690
J
U,C
R,L
T
K
A
B,G,E
R549
100K
X
X
100K
100K
100K
100K
RD35810
RD35810
RD35810
RD35810
RD35810
R553
100K
100K
X
X
X
X
X
RD35810
RD35810
R552
X
100K
100K
X
X
X
X
RD35810
RD35810
R555
X
X
100K
100K
100K
100K
100K
RD35810
RD35810
RD35810
RD35810
RD35810
CB511
V782640
X
X
X
X
X
X
SW901
X
X
P022MJB
X
X
X
X
V362430
W513
MF40412
X
X
X
X
X
X
CB512
X
V782550
V782550
V782550
V782550
V782550
V782550
x: NOT USED
O: USED / APPLICABLE
J901
X
O
O
O
O
O
O
T601
WC71660
X
X
X
X
X
X
T602
WC71680
X
X
X
X
X
X
IC702: NJM2581M
Video Amp
6dB
75Ω
VIN1
1
Driver
14
V+1
AMP
BIAS
2
NEE1
13
VOUT1
75Ω
VIN2
3
6dB
12
V+2
AMP
Driver
BIAS
VEE2
4
11
VOUT2
6dB
75Ω
VIN3
5
Driver
10
V+3
AMP
BIAS
VEE3
6
9
VOUT3
PowerSave
7
REF
8
GND
IC601, 602, 901: LA7956
Video Switch
6dB
AMP
4 INPUT 1 OUTPUT
DRIVER
CONTROL
VIDEO SWITCH
1
2
3
4
5
6
7
8
9
VIDEO
A
B
VIN1
GND
VIN2
VCC
VIN3
VIN4
OUT
[HTR-5750, DSP-AX450 only]
Page 82
H10
to MAIN (2)
10.0
4.2
4.2
1.9
1.1
1.1
4.2
-0.5
0.1
0.4
-0.4
-0.5
-0.4
-0.5
0
Page 82
F1
to MAIN (1)
IC607, 608: TK15420M
Video Amp
OUT A
1
8
VCC
IC603, 606, 701: TC74HC4053AF
2
Analog Multiplexer/Demultiplexer
–IN A
7
OUT B
+
–
+
–
+IN A
3
6
–IN B
INHIBIT
VDD
VEE
4
5
+IN B
6
16
A
11
LEVEL
BINARY TO 1-OF-8
B
10
CONVERTER
DECODER WITH INHIBIT
IC609: TC74HCU04AF
C
9
Hex Inverters
VSS
8
VEE
7
0X
12
SW
1A
1
14
VCC
1X
SW
13
0Y
1Y
2
13
6A
2
SW
1Y
1
SW
2A
3
12
6Y
0Z
5
SW
1Z
3
SW
2Y
4
11
5A
3A
5
10
5Y
INPUT STATES
"ON" CHANNNEL (S)
INHIBIT
C
B
A
3Y
6
9
4A
0
0
0
0
0X, 0Y, 0Z
0
0
0
1
1X, 0Y, 0Z
GND
7
8
4Y
0
0
1
0
0X, 1Y, 0Z
0
0
1
1
1X, 1Y, 0Z
0
1
0
0
0X, 0Y, 1Z
0
1
0
1
1X, 0Y, 1Z
0
1
1
0
0X, 1Y, 1Z
0
1
1
1
1X, 1Y, 1Z
1
X
X
X
NONE
I
J
K
IC501: NJU7201L55
Point 1 Pin 13 of IC502
Voltage Regulator
VIN
2
3
VOUT
VREF
1
GND
IC503: LC72722
RDS Decoder
1
5
6
VDDA
3
+
CLOCK
14
VDDD
PLL
RECOVERY
REFERENCE
(57kHz)
(1187.5Hz)
VOLTAGE
VSSA
4
15
VSSD
VREF
57kHz
ANTIALIASING
SMOOTHING
DATA
MPX IN
2
bpf
19
RDS-ID
FILTER
FILTER
DECODER
(SCF)
DO
20
CL
21
18
SYNC
RAM
ERROR CORRECTION
SYNC/EC
DI
22
CCB
(24 BLOCK DATA)
(SOFT DECISION)
CONTROLLER
24
SYR
CE
23
CLK(4.332MHz)
T1
7
MEMORY
CONTROL
T2
8
SYNC
SYNC
TEST
DETECT-1
DETECT-2
T3
9
OSC/DIVIDER
T4
10
11 16 17
13
12
Page 85
D2
to VIDEO
11.8
5.0
5.7
5.6
A
4.9
0
5.6
5.1
0
5.6
0.1
2
4.8
0
0
4.8
4.7
5.6
4.1
4.8
4.7
MICRO COMPUTER
2.9
2.7
1.5
0.4
3.7
4.8
4.7
0.1
4.7
1.5
4.8
0.4
4.8
0
0.9
4.8
4.8
0
1.2
4.8
4.9
4.9
4.8
4.8
14
X-COM
Y-COM
15
4
Z-COM
Page 81
E9
to OPERATION (1)
L
M
N
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
Point 2 Cathode of D501 and Pin 12 of IC502
A D501
B IC502
POWER ON
POWER OFF
(Connect the power cable)
(Disconnect the power cable)
Page 78
F2
to FUNCTION (1)
4.8
4.8
-11.6
4.8
4.8
-11.6
4.8
4.8
-11.6
4.8
4.1
4.8
4.8
0
0
4.8
4.8
4.8
4.8
4.8
0.1
4.1
4.7
0.1
0.5
0.1
0.1
1
0.1
0.5
B
0.1
Page 75
G1
to DSP
79