Schematic Diagram - Yamaha RX-V2400 Service Manual

A B C
SCHEMATIC DIAGRAM (DSP 1/2)
1
REGULATOR
2.3 1.2
4.9
2
2.3 3.4 1.2 4.3 0
4.9 4.7 2.5
1.2
0
3
0.1 3.4
0.1
4.9 4.9
0
4.9
3
8
1 2.6
0
2
4
2.6
0.1 4.9 0
0.1
3.4
4.9
0
5
4
0
7
0.1 6
0.1
INPUT SELECTOR
4.1
0
4.8
0.2
0 3.4
0 0.1 0
0.1 3.4
4.8
4.1 0
5
0.2 0
0.2 0
0.1 0
0.2
0
0
4.8
0 3.4
0.1 0
0.1 3.4
3.9
4.1 0
0 0.2 0
0.2 0
4.8
0.1 0
0
REC OUT SELECTOR
6
DIGITAL IN
4.9
Point 1 Pin 29 of IC509
2.3 2.7 0.6
0
2.3 2.7 0.6
7
2.3 2.7 0.6
8
IC501: SN74LVU04APWR IC503: PQ012FZ01ZP
Hex Inverters Voltage Regulator
DC input DC output
1A 1 14 VCC 1 3
(Vin) (Vo)
1Y 2 13 6A
Specific IC
2A 3 12 6Y
Bias power supply ON/OFF control
2 4
(VB) (Vc)
2Y 4 11 5A 5
GND
3A 5 10 5Y
3Y 6 9 4A
GND 7 8 4Y
9
IC502: SN74AHCT00PWR
Quad 2-Input Nand Gate
1A 1 14 Vcc
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
10
2Y 6 9 3A
GND 7 8 3Y
D E F
Page 91 I2 Page 93 J8
to OPERATION (3) to POWER (3)
2.5
3.4 4.9
0
3.4 4.9
2.5 3.4
0
0 0
4 0.1 3 4.9 6 4.9 8 0
5 4.9 4.9 14
0
3 0 7
1 2 1 2 4 5 9 10
0 0 3.4 3.4 3.4 3.4 3.4 3.4
4.9
3.9
4.9
0 0 0
0
0
0
3.4
0
0.1 3.4
0.1 3.4
0 3.3
0.1 0
3.9 0
0 0
3.4 3.4
1
0.6 1.7
DIR
0.6 3.4
0.6 1.7
3.4 3.4
0 0
IC504, 505: TC74VHC153FT
Dual 4-Channel Multiplexer
A 14
S0
S0
S1
S1
B 2
S2
S2
S3
S3
1C0 6
7
1Y
S0
1C1 5
IC506: NJM2904M
S1
Dual OP-Amp
V–
1C2 4
S2
1C3 3
S3
Q6
1G 1 Q2 Q3 Q5
– Q1 Q4
Q7
10
2C0 9
2Y
S0
INPUTS
11
2C1
Q13
S1 +
Q11
Q12
2C2 12
Q10
S2
Q8 Q9
2C3 13
S3
2G 15
G H
Page 89 E1
to FUNCTION
TRANSCEIVER
11 4.8
12 13
3.2 3.2
3.4
1.2
0
3.4
3.4
0
1.2
1.2
0
DECODER
1.7
1.7
1.2
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
IC510: µPC29M33T-E1
IC508: PQ025EZ5MZP
Regulator Voltage Regulator
1
Vin Vo
1 3
Safety Drive
2 Vc
Limiter
5
GND
Amp.
3
OUTPUT
Excessive Electric
Current Protection
2
I J K
RX-V2400/RX-V2400RDS/DSP-AX2400/RX-V1400/RX-V1400RDS/HTR-5690/DSP-AX1400
3.4
1.7
0
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
SDRAM
2.8
0
1.2
0
3.4
2.9
3.4 0
3.2 2.9 3.2
2.8
2.9 2.9
3.1 0 0
2.9 2.8
3.1 2.9 2.8
3.4 3.4
0 2.9 0
1.2 2.9 3.2
0 0
2.9 2.9
2.9 2.8
3.4 3.4
3.1
3.4 3.1
3.3 3.4
3.4
3.3
0.7 0.1
0.1 3.3
0.1 2.4
0.1 3.1
3.4 3.0
3.2 3.2
3.4 0
IC513: SN74LV245APWR
IC511: SN74AHCT08PWR
Quad 2-Input And Gate Octal Bus Transceiver with 3-state Outputs
INPUT
1A 1 14 Vcc DIR 1 20 Vcc
1B 2 13 4B
A1 2 19 OE
1Y 3 12 4A
A2 3 18 B1
2A 4 11 4Y
OUTPUT
A3 4 17 B2
2B 5 10 3B
2Y 6 9 3A
A4 5 16 B3
GND 7 8 3Y
A5 6 15 B4
GND A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
GND 10 11 B8
L M N
IC515: W981616BH-7
512K x 2 Banks x 16 Bits SDRAM
CLK 35
CLOCK
BUFFER
CKE 34
COLUMN DECODER
CS 18 CONTROL
SIGNAL
R
RAS 17
GENERATOR O
COMMAND
W
DECODER
CAS 16
D CELL ARRAY
2 DQ0
E
WE 15 BANK #0
C
3 DQ1
O
D
5 DQ2
E
R
A10 20
6 DQ3
SENSE AMPLIFIER
8 DQ4
9 DQ5
MODE
A0 21 11 DQ6
∼ REGISTER
ADDRESS 12 DQ7
A3 24
REFRESH DQ
BUFFER
COUNTER BUFFER 39 DQ8
A4 27
∼
40 DQ9
A9 32
42 DQ10
BA 19
43 DQ11
45 DQ12
46 DQ13
REFRESH COLUMN
COLUMN DECODER
48 DQ14
COUNTER COUNTER
R
O 49 DQ15
W
D CELL ARRAY
E BANK #1
C
O
D
E
14 LDQM
R
36 UDQM
SENSE AMPLIFIER
IC531: SN74AHC1G08DCKR
2-Input And Gate
A 1 5 Vcc
B 2
GND 3 4 Y
# All voltages are measured with a 10MΩ/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.
87