Yamaha RX-Z9, Service Manual

Page: 131 / 190

A B C D E F G H
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I J K L M N
7
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10
131
RX-Z9/DSP-Z9
■
SCHEMATIC DIAGRAM (DSP1 1/2)
* All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
* Components having special characteristics are marked
Z
and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
Point w (Pin 55 of IC18)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
Point q (Pin 29 of IC14)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0V
0V
Point
e
(Pin 13 of IC27)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
0V
4.2
4.2
4.9
4.8
4.8
0
0
0
0
0
2.8
2.8
2.8
2.8
4.8
4.8
4.8
4.8
4.8
4.8
0.6
0.6
0.6
0.6
0
0
0
0
0
0
0 0
0
0
0 0
0 0
0
0
0
0
0
0.4
0
4.8
0.4
0
4.8
0.4
0
4.8
0.4
0
4.8
0.4
0
4.8
0.4
0
4.8
0
4.9
0
0
4.9
0
0
4.9
0
0
0
0
0
0
0
0
0
0
0
0 0
0 0
0
0
4.5
4.6
4.6 3.6
3.6
3.6
0
4.6
4.6 3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.5
3.6
3.6
3.6
3.6
0.7
4.9
0
0
0
0
0
0 0
0
0.3
0
0
0
4.7
4.7 3.6
3.6
3.6
0
0
2.9
3.0 2.0
2.9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.9
4.9
4.9
4.9
0
0
0
0
3.6
0.3
0.3
2.6
3.6
0
0
0
0
0
0
0
0
0.4
4.8
4.8 4.8
4.9 0.3
0.3
0.2
0.4 0.4 0.4 2.5
2.5
4.8
4.8 4.8
4.9 0.3
0.3
0.2 2.5
0 0
0.4 0.4
0.4 0.4
2.5 0 0
4.8
4.8 4.8
0.4 4.2
0.3
0.2 0.4
0.6 0.6
0.6 0.6
0.2 0 0
4.8 4.8
4.8
4.8
4.8
4.8
0.3
4.8
4.8
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1.7
2.0
2.0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1.9
1.9
1.9
1.9
1.9
1.9
1.9
2.3
2.5
3.2
1.9
1.9
3.6
3.6
3.6
3.6
3.6
1.7
1.7
3.6
3.6
3.6
3.6
0
0
0
0
0.7
3.5
3.6
3.6
3.6
0.2
3.6
3.6
0.3
4.5
3.0 3.0 2.0
2.0
4.3 2.9 1.5 0
0
0
0.3 2.5
3.6
3.6
3.6
3.6 1.9
1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 3.6
3.6
3.6 3.6
3.6
3.6
3.6 1.7 1.7
0.3 0.3 0.3 1.5
3.5
3.5
0 0
0
0
0
0
0
0
0.2 0.2
0
0
4.8
4.8
3.3
0
4.8
4.8
0 0 0 0 0 0 0
0
0
0 0 0
2.6 2.3 4.8 4.8 4.8 2.5 4.9 2.5
0
0
0
0
0 0 0 0 0
0
0 0
0
0 0 4.8 2.1
0 0
0
0 0 0 0 0 0 0 0
0
0
0
1.9
1.9
0
0
3.6
3.6
3.6
3.6
3.6
3.6
0.4 4.2
0.3
0.2
0.4
0.6 0.6 0.6 0.6 0.2 0 0
3.6
3.6
3.6
3.6
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.2
0
4.8
0
4.8
0
0
4.9
4.2
4.8 4.3
-3.4
0
4.5
4.8
4.8
4.8
4.8
4.0
2.4
0
0
0
0
0
0
4.2
4.9
4.9
4.9
0.2
0.3
0.1
0.6
0.4
0.2
0.1
0.1
3.4
4.0
2.5
2.5
-4.8
0.8
0.8
4.8
4.8
4.8
4.8
4.8
4.8
1.2
1.2 4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
0.5
0
0
3.6
3.1
0
0
0
0
0
0
0
0
0.6
3.6
3.6
0.7
3.7
0.5
3.8
3.5
3.5
0.3
0.3
4.8
4.8
1.2
1.2
1.2
2.1
1.2
0
0 0
0
0
0
0
0
0
0
0
0 0
0 0
0 0
0
0
0
4.8
4.8
-0.4
-0.4
0.3
-0.4 -0.4
0.5 3.5
3.6
3.7 0.4 0.4 0.4
0.4 0.4 0.4
0.4
0.4 3.6 3.6
3.6 3.6
3.6 3.6 3.6 3.6 3.6 3.6 3.6 3.6
0 0
0 0 0 0.3
3.5
0
3.5 3.6 3.6 3.6
3.6
3.6
3.6
3.6 3.6
3.6
3.6
3.6 3.8 3.1 0.4 0.4 2.0 1.8 0 0 0 0 0 0 0 0 0 0
3
2
1
DIGITAL IN
(COAXIAL)
DIGITAL IN
A/D IN
L/R
SL/SR
SBL/SBR
PL/PR
C+/C-
SWL/SWR
AC-3
DEMODULATOR
SUB CPU
AUDIO SIGNAL SELECTOR
DIR
REGULATOR
COAXIAL INPUT SELECTOR
COAXIAL
REC OUT
SELECTOR
OPTICAL
INPUT
SELECTOR
OPTICAL
REC OUT
SELECTOR
256K SRAM
DUTY CORRECTER
SIGNAL DETECT
EUROPE
T
O
VIDEO BO
TT
OM CB4
T
O
OPERAION (6)
W951
T
O
1394 CB5
P
age 137 A-6
P
age 142 K-9
P
age 134 A-7
P
age 133 H-1
P
age 133 G-1
P
age 133 F-1
IC6–9 : TC74HC151AF
8 to 1 Data Selector
A1
B1
A2
V DD
B4
1
2
3
4 11
Y1 A4
Y4
12
13
14
B2
Y2
B3
A3
5
6
7 V SS Y3 8
9
10
1A
1Y
2Y
V
DD
6A
1
2
3
4 11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 V SS 4Y 8
9
10
IC2, 12, 16 : 74VHCT00AMTCX
Quad 2 Input NAND IC1, 3, 5, 11 : 74VHCU04MTCX
Hex Inverters
D4
D3 C
D2 D1 D0 Y W S
D5 D6 D7 A B
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
VCC 4 5 6 7 A B C
3 2 1 0 Y
W
STR
OBE GND
D
A
T
A
INPUTS
OUTPUTS
D
A
T
A
INPUTS
D
A
T
A
SELECT
INPUTS OUTPUTS
SELECT STROBE
C
X
L
L
L
L
H
H
H
H
B
X
L
L
H
H
L
L
H
H
A
X
L
H
L
H
L
H
L
H
S
H
L
L
L
L
L
L
L
L
Y
L
D0
D1
D2
D3
D4
D5
D6
D7
W
H
D0
D1
D2
D3
D4
D5
D6
D7
IC13 : SN74AHCT245PWR
IC24 : SN74LV245APWR
Octal 3-State Bus Transceivers
1 DIR
2 A1
3 A2
4
A3
5 A4
6 A5
7 A6
8 A7
9 A8
10
GND
20 V
CC
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
19 ENG
IC4 : SN74AHC1G04DCKR
Single Inverter Gate
NC
GND
VCC 1
2
3 4
2A
2Y
5
IC71 : SN74LVC2G17DCKR
Dual Schmitt Trigger Buffers
1A 1
2
3 2A 4
5
6
GND VCC
1Y
2Y
IC25 : CY62256LL-70SNCT
35K x 8 Static RAM
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
I/O0
I/O1
I/O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
WE
A4
A3
A2
A1
OE
A0
CE
I/O7
I/O6
I/O5
I/O4
I/O3
INPUT BUFFER
COLUMN
DECODER
POWER
DOWN
SENSE AMPS R
O
W DECODER
512 X 512
ARRAY
CE
A10
A9
A8
A7
A6
A5
A4
A3
A2
A14 A13 A12 A11
A1 A0
WE
OE
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
IC21 : XC9572XL-10TQ100
CPLD
JTAG
CONTROLLER
IN-SYSTEM PROGRAMMING CONTROLLER
FUNCTION
BLOCK 1
FUNCTION
BLOCK 2
FUNCTION
BLOCK 3
FUNCTION
BLOCK 4
Macrocells
1 to 18
Macrocells
1 to 18
Macrocells
1 to 18
Macrocells
1 to 18
I/O
BLOCKS
FAST CONNECT II SWITCH MATRIX
JTAG PORT
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O/GCK
I/O/GSR
I/O/GTS
3
1
2
3
1
54
18
54
18
54
18
54
18
IC10 : NJM2904M-T1
IC15 :
µ
PC4570G2
Dual OP-Amp
– +
OUT1
–IN1
–VCC
+VCC
OUT2
1
2
3
4 5
+IN1 –IN2
+IN2
– +
6
7
8
IC17 : PQ070XZ5MZP
Rgulator
DC INPUT (VIN) DC OUTPUT (VO)
OUTPUT ADJUSTMENT (VADJ)
GND
4
5
3 1
ON/OFF CONTROL (VC) 2
SPECIFIC IC
IC20 : PQ018EZ01ZP
Rgulator
DC INPUT (VIN) DC OUTPUT (VO)
ON/OFF CONTROL (VC)
GND
2
5
3 1
I C