Schematic Diagram - Yamaha RX-Z1 Service Manual

Av receiver/av amplifier
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A
B
SCHEMATIC DIAGRAM (DSP 1/2)
1
4.7
4.1
4.7
0
-0.1
-0.8
4.1
4.1
4.7
0
0
0
-0.6
-0.6
0
4.7
4.7
2
4.7
2.5
0
0
0
4.7
0
3.0
0.4
0
0
2.5
0
0
0
0
3.0
0.4
4.8
0
2.5
0
0
0
0
3
3.0
0.4
4.8
0
4.7
2.5
0
0
0
0
3.0
0.4
4.8
0
0
3.2
0
0
4.8
4.7
INHIBIT
0
4
4.8
0
0
3.2
4.7
DUTY CORRECTOR
0
4.8
4.8
3.4
3.4
4.7
4.7
0
3.8
0
0
2.5
0
4.7
0
3.8
0
0
0
5
4.7
3.8
11.3
0
4.7
2.4
2.4
2.4
2.4
3.8
2.4
2.4
0
4.7
6
3.8
0
4.7
3.8
2.4
0
4.7
2.4
2.4
2.4
2.4
2.4
-11.3
7
8
9
C
D
E
# All voltages are measured with a 10MΩ/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.
4.7
4.1
3.9
-0.1
3.3
4.7
0
0
4.1
4.3
0
-3.6
4.7
3.9
2.4
Point 1 Pin 12 of IC55
0
DIGITAL IN
0
4.7
0
0
4.8
4.7
0
0
4.8
0
0
0
0
4.7
3.2
1.6
3.2
1.6
1.2
0
1.2
3.2
0
0
3.2
0
0
0
DIR
0
0
0
0
0
0
4.7
0
4.9
2.4
4.9
2.4
0
A/D
CONVERTER
0
2.4
0
4.9
2.4
4.9
IC6: NJM2904M
Dual OP-Amp
INPUTS
IC2, 4, 7: TC74HCU04AF-TP1
IC3: TC74HCT00AF
x: NOT USED
Hex Inverters
Quad 2-Input Nand Gate
O: USED / APPLICABLE
1A
VCC
1
14
1A
1
14
Vcc
1Y
6A
2
13
1B
2
13
4B
2A
3
6Y
1Y
3
12
4A
12
2A
4
11
4Y
2Y
4
5A
11
2B
5
10
3B
3A
5
10
5Y
2Y
6
9
3A
3Y
6
9
4A
GND
7
8
3Y
GND
7
8
4Y
F
G
4.7
2.4
2.4
2.9
-5.0
2.9
4.7
4.7
4.7
1
4.7
4.7
0
0
4.7
4.7
4.7
4.8
4.7
4.7
4.7
0
4.7
4.7
4.7
4.8
4.7
4.7
0
0
SUB µ-COM
4.7
0
0
~
0
4.7
0
4.8
4.7
4.7
0
0
0
4.7
0
4.4
1.2
1.2
0
4.8
DE-
1.2
1.2
0
4.8
0
0
0
0.1
MODULATOR
4.7
4.7
1.2
0
4.7
0
1.2
4.7
0
0
0
2.6
INPUT / REC OUT SELECTOR
0.4
3.8
3.8
DOLBY DIGITAL / PL2 DECODER
3.8
SUB DSP
0
0
Point 2 Pin 2 of IC14
0
3.3
~
4.8
0.2
0
4.8
4.8
0
3.8
0
3.8
3.8
2
0
2.6
IC8: µPC4574G2
4 Channel OP-Amp
V–
OUT A
1
14
OUT D
IC15: CY62256LL
A
D
Static RAM
–IN A
2
– +
+ –
13
–IN D
+IN A
3
12
+IN D
Q6
V+
V–
Q2
Q3
Q5
4
11
Q1
Q4
Q7
+INB
5
10
+INC
OUTPUT
–INB
6
9
–INC
– +
+ –
B
C
Q13
OUT B
7
8
OUT C
+
A
10
Q11
A
9
Q12
Q10
A
8
IC10: µPC4570G2
A
7
A
Q8
Q9
Dual OP-Amp
6
A
5
A
4
A
OUT
1
8
+V
3
1
CC
A
2
–IN
2
7
OUT
1
2
CE
+
+
WE
+IN
1
3
6
–IN
2
OE
–V
CC
4
5
+IN
2
H
I
~
0
Point 3 Pin 13 of IC17
~
~
0
~
4.8
0
~
1.6
~
~
0
2.6
4.8
0
1.6
0
1.6
0
0.1
3.1
0
1.6
4.7
0
0.1
1.2
3
0
0
0
1.3
0
0
1.2
0
1.6
3.1
4.8
0
4.8
0
0
0
0
4.8
0
4.8
0
4.8
0
RAM
2.6
0
0
0
3.0
3.2
0
3.2
0
0
0
0
0
3.2
DTS-ES / AAC DECODER
0
1.3
L/R
0
0.7
C/LFE
0
~
LS/RS
2.6
0
RC
0
0
0
0
0
0
0
3.2
0
0
0
0
0
0
3.1
0
0
2.6
3.2
0
0
0
0
0
2.6
IC16: TC74VHCT08AF
Quad 2-Input And Gate
IC19: IS61LV6416-15K
1A
1
14
Vcc
64k x 16 High-speed CMOS Static RAM
1B
2
13
4B
A15
1
1Y
3
12
4A
A14
2
2A
4
11
4Y
A13
3
A12
4
2B
5
10
3B
A11
5
/CE
6
2Y
6
9
3A
I/O0
7
GND
7
8
3Y
I/O1
8
I/O2
9
IC18: TC74VHCT541AF
I/O3
10
3-State Buffer
Vcc
11
I/O
0
GND
12
INPUT
/G1
1
20
Vcc
I/O4
13
BUFFER
I/O
1
I/O5
14
A1
2
19
/G2
I/O
2
I/O6
15
A2
3
18
Y1
I/O7
16
I/O
3
512x512
/WE
17
A3
4
17
Y2
ARRAY
I/O
4
A10
18
A4
5
16
Y3
A9
19
I/O
5
A8
20
I/O
A5
6
15
Y4
POWER
6
A7
21
DOWN
I/O
A6
7
14
Y5
COLUMN
7
NC
22
DECODER
A7
8
13
Y6
A8
9
12
Y7
GND 10
11
Y8
J
K
L
RX-Z1/DSP-AZ1/DSP-AX1UG
1.6
0
2.4
3.1
3.1
0
CLOCK DIVIDER
0
3.1
1.6
0
1.6
0
1.5
0
0
0.1
3.2
3.2
3.1
2.7
4.6
2.6
3.2
0
0
0
0
0
0
0
0
3.2
3.2
3.2
3.2
3.2
0
2.6
~
0.1
3.1
3.0
~
0
IC21: PQ025EZ5MZP
Regulator
44
A0
Vin
1
3
Vo
43
A1
64k X 16
A0 - A15
DECODER
42
A2
MEMORY ARRAY
41
/OE
40
/UB
2
Vc
VCC
39
/LB
5
GND
38
I/O15
GND
37
I/O14
I/O0 - I/O7
I/O
36
I/O13
Lower Byte
35
I/O12
DATA
COLUMN I/O
I/O8 - I/O15
CIRCUIT
34
GND
Upper Byte
33
Vcc
32
I/O11
31
I/O10
/CE
30
I/O9
/OE
29
I/O8
CONTROL
/WE
28
NC
CIRCUIT
27
A3
/UB
26
A4
/LB
25
A5
24
A6
23
NC
102

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