Yamaha RX-V1500, Руководство по обслуживанию

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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
SCHEMATIC DIAGRAM (DSP 1/2)
77
Point 1 Pin 29 of IC509
IC501: SN74LVU04APWR
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
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC502: SN74AHCT00PWR
Quad 2-Input Nand Gate
Vcc 14 1A 1
4B 13
4A 12
4Y 11
3B 10
3A 9
3Y 8
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
IC511: SN74AHCT08PWR
Quad 2-Input And Gate
Vcc 14 1A 1
Specific IC
1
DC input
(Vin)
GND
DC output
(Vo)
3
5
IC503: PQ012FZ01ZP
Voltage Regulator
2
Bias power supply
(VB)
ON/OFF control
(Vc)
4
IC504, 505: TC74VHC153FT
Dual 4-Channel Multiplexer
14 A
S0
S0
6 1C0
2
B
S1
S1
S2
S2
S3
S3
S0
7 1Y
5
1C1
S1
4 1C2
S2
1
1G
3 1C3
S3
10
2C0
S0
9 2Y
11 2C1
S1
12 2C2
S2
15 2G
13
2C3
S3
IC506: NJM2904M
Dual OP-Amp
Q1
Q2 Q3
Q9 Q8
Q4
INPUTS
OUTPUT
V–
–
+
Q6
Q5
Q10
Q11
Q12
Q7
Q13
IC508: PQ025EZ5MZP
Regulator
1 Vin 3 Vo
2 Vc
5
GND
IC510:
µ
PC29M33T-E1
Voltage Regulator
3 OUTPUT
1 INPUT
2 GND
Safety Drive
Limiter
Excessive Electric
Current Protection
Sudden Current
Protection
Starter Circuit
Driver
Standard Voltage
Overheat Protection
Amp.
1 DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
Vcc
OE
B1
B2
B3
B4
B5
B6
B7
B8
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
IC513: SN74LV245APWR
Octal Bus Transceiver with 3-state Outputs
IC515: W981616BH-7
512K x 2 Banks x 16 Bits SDRAM
CLOCK
BUFFER
ADDRESS
BUFFER
CLK 35
18
CKE 34
A10 20
CS
17 RAS
16 CAS
15 WE
21 A0
〜
24 A3
27 A4
〜
32 A9
19 BA
2 DQ0
3 DQ1
5 DQ2
6 DQ3
8 DQ4
9 DQ5
11 DQ6
12 DQ7
39 DQ8
40 DQ9
42 DQ10
43 DQ11
45 DQ12
46 DQ13
48 DQ14
49 DQ15
14 LDQM
36 UDQM
COMMAND
DECODER
REFRESH
COUNTER
REFRESH
COUNTER DQ
BUFFER
COLUMN
COUNTER
MODE
REGISTER
CONTROL
SIGNAL
GENERATOR
CELL ARRAY
BANK #0
R
O
W
D
E
C
O
D
E
R
COLUMN DECODER
SENSE AMPLIFIER
CELL ARRAY
BANK #1
R
O
W
D
E
C
O
D
E
R
COLUMN DECODER
SENSE AMPLIFIER
Y 4
B 2
GND 3
IC531: SN74AHC1G08DCKR
2-Input And Gate
Vcc 5 A 1
1
2
3
4
5
6
7
4
1 2
3
5
3
1 2
6
4 5
8
9 10
11
12 13
7
14
8
DECODER
SDRAM
TRANSCEIVER
REGULATOR
DIR
INPUT SELECTOR
REC OUT SELECTOR
Page 81
to OPERATION (3)
I2 Page 83
to POWER (3)
J8 Page 79
to FUNCTION
E1
★
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.
2.3
2.3
0.1
4.9
0
0.1
4.9
0
4.1
0
4.8
0.2
0
4.8
0.2
0
4.8
3.9
0
4.8
3.4
1.2
0
3.4
3.4
0
1.2
1.2
0
1.7
1.7
1.2
0.1
0.1
0
0.1
3.9
0
3.4
0.6
0.6
0.6
3.4
0
0.1 3.4 0 1.7 1.7 0 3.4 1.7 0.1 1.7 1.7
3.4
3.4
3.3
0
0
0
3.4
1.7
3.4
1.7
3.4
0
0
3.4 0.1 3.4 3.4 3.4
0
3.5 3.4 3.4 2.7 3.2
0
1.7
3.4
0
0.1
1.2
0
3.3
3.2
3.4
0
1.2
2.7
0
1.2
3.4
3.4
1.2
3.4
0
1.2
3.4
0
0
1.2
1.2
0
3.4
1.7
1.7
1.2
0
0.1
0.7
0.1
1.6
0
3.4
1.7
1.7
3.4
0
1.2
2.9
2.9
2.9
2.9
2.9
2.9
3.4
0
1.2
2.8
2.9
2.9
3.2
2.9
2.8
0
1.2
0
3.4
2.9
3.2
2.8
3.1
3.1
3.4
0
1.2
1.2 0 3.4 3.4 3.4 0 1.2 0.1 0.1 3.4 3.4 0 1.2 3.2 3.2 3.0 3.1 3.4 0 2.4 3.4 3.3 3.4 3.3 1.2 0 3.4 3.4 0 0.1 3.4 0 1.2 0.7 0.1 1.2 0 3.4 3.3
1.2
1.2
0
3.4 3.4 1.7
0
3.4 1.2
0 0
1.2 1.2
0
1.2
0
3.4 3.4 3.4 3.4
0 0
1.2 3.4 3.4 3.4
0 0
1.2
0
1.2
0 0
3.4 3.4
0
3.4 3.4
0
1.2
3.4
2.9
2.9
0
2.9
2.9
3.4
2.9
2.9
0
2.9
2.9
3.4
3.1
3.4
3.3
3.4
3.3
0.7
0.1
0.1
0.1
3.4
3.2
3.4
0
3.2
2.9
0
2.8
2.8
0
3.2
0
2.9
2.8
3.4
3.1
3.4
0.1
3.3
2.4
3.1
3.0
3.2
0
4.9
4.9
0
0
0
0
4.9
0.1
4.9
3.4
0.1
3.4
4.9
0
0
0
0
0
3.4
0
2.6
2.6
3.9
0.1
0.1
0
0
4.9
0
4.9
3.4
0
4.9
3.4
4.9
3.4 3.4
0
3.4 3.4
4.8
3.2
0
3.4 3.3 3.4 3.4 3.4 2.7 2.8 2.8
0
3.4 0 4.9 4.9 4.9 4.9 4.9 4.0 4.0 4.0
3.2
0.1
2.3 2.7
0
4.9
0.6
2.3 2.7 0.6
2.3 2.7 0.6
0
0.1
0.1
4.1
0.2
0.2
0.1
0
3.4
0
3.4
0
0
0
0
0
0.1
0.1
4.1
0.2
0.2
0.1
0
3.4
0
3.4
0
0
0
0
1.2
1.2
1.2
0
0 3.4 4.3
4.9
4.9
2.5
2.5
2.5
0
0 4.7
3.4
3.4
0
4.9
3.4
0
4.9
1
DIGITAL IN
J505
No service part available
サービス部品供給なし