Yamaha RX-Z9, Руководство по обслуживанию

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A B C D E F G H
1
2
3
4
5
6
I J K L M N O
7
8
9
10
140
RX-Z9/DSP-Z9
MAIN CPU
REGULATOR
RESET
4M ROM
8
9
CH1
9
CH2
13.0
13.1
13.1
0.6
5.6
5.6 5.6
5.6 4.8
4.8
4.8
4.8
3.5
4.1
4.1
12.0
6.5
6.5
7.1
0
0 0
0
0
0
0
0
0
0
0
0
5.2
0
17.6
0.1
4.7
4.7
4.7
5.2 12.2
4.8
4.9
4.9
4.9
4.9
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
4.8
0.5
2.9
1.2
5.2
1.4
2.4
~
2.2
0
0
0
0
0
0
0
0
0
0
0
0
0
2.8
2.3
1.7
2.4
2.7
1.8
2.5
1.9
1.9
4.7
4.6
1.0
3.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0
0
4.8
4.8
4.8
0.1
3.7
3.3
3.3 3.4 2.3
4.8
3.5
3.5
4.9
4.9
4.2
4.1
4.1
4.8
3.5
4.1
4.1
4.8
3.5
4.2
4.2
4.8
3.5
4.2
4.2
0.7
4.2
-12.4
0.3
4.3
0.5
0.1
0
0
0
1.2
0
0
0
12.2
12.2
3.5
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.8
4.8
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
4.7
-12.4
4.4
4.8
4.7
-12.4
4.4 4.8
4.6
4.9
1.9
2.8
2.1
1.7
2.4
0
0
0
0
0
0
0 0 0
3.4 0.9
0.9
~
4.7
4.7
4.7
2.4
2.4
2.9
4.7
4.6
4.9
4.9
0.5
0.5
4.8
4.8
4.8
4.8
4.8
2.2
2.9
2.0
2.2
2.3
0.6
0.5
4.8
4.8
4.8
4.8
0
0
0
0
0
0
0
0
0
0
0
-0.1
0
0
0
14.5
0.2
13.2
14.5
12.1
0.8
4.8
4.8 2.7 2.9 1.8 2.0 2.5
2.5 1.8
2.2 1.9 1.9
1.9
1.0
0
0
0
2.3
2.3 2.8
0
2.8 2.8 2.3 2.1 1.7
1.7
1.7 2.4 2.4 2.4
2.4 2.4 2.2
2.2
2.2
2.3
2.3
2.3
2.3
2.3 2.7
2.7
2.7
2.4
2.4
2.4 2.4 2.4
2.4 2.5
2.4
4.7
4.9 4.7
4.7 4.7
4.7
4.7 4.7 4.7
4.7 4.7
4.7 3.6
4.0
4.8 4.8 4.8 4.2
2.2 2.1 4.9 0 0 0 0 0
0
0
0 0
0 0
0.7 3.5
3.5
4.7
4.7 4.7
4.7 4.7 4.7
3.8
4.8
4.8 4.8
0 0 0 0 0 0
0 0 0 0 0 0 0 0
0
0 0
0
0 0 0 0 0
0
0.1
0.3 1.0 3.6 0.5 3.7
3.1
3.7 3.7
3.5 3.5
3.8 0.8 3.6 1.3
4.7
4.7
4.7
2.2
2.3
3.8
2.4
2.5 3.6 1.3 1.9
4.8
0.2
14.4
11.8
14.6
12.3
12.3
14.6
0
0
0
3.6
-12.5
-12.5
-12.5
-12.5
0
0
0
0
0
0
0 0
2.8
2.1
1.7
2.4
2.9
2.0
2.2
2.3
4.8
4.8
4.8
4.8
4.8
2.3
2.2
2.0
2.9
2.4
1.7
2.1
2.8
10.7
4.7
5.2
0
0
0
4.7
4.6
4.8
0
0
12.4
0.1
0.7
0.7
0
0
0
0
0
4.7
T
O
OPERA
TION (1) CB904
P
age 137 I-2
T
O
1394 CB202
P
a
ge 134 M-2
T
O
OPERA
TION (3) CB908
P
a
ge 137 J-8
TO AM/FM TUNER
(U, C, A only)
TO FUNCTION W13
(U, C, A only)
Page 135 C-1
TO SUB TRANS (4) W862
Page 144 L-4
T
O
PO
WER (1)
W908
P
age 143 I-6
T
O
FUNCTION
W7
P
age 136 G-10
T
O
FUNCTIO
W6
P
age 136 F-10
T
O
VIDEO BO
TT
OM CB11
P
a
ge 142 N-7
X: NOT USED
EUROPE
Point i (Pin 20 of IC56)
V : 2V/div, H : 100nsec/div
DC, 1 : 1 probe
0V
Point o
CH 1 : Emitter of Q18
CH 2 : Collector of Q19
V : 5V/div (CH 1)
V : 5V/div (CH 2)
DC, 1 : 1 probe, H : 4.0sec/div
CH 2
CH 1
↑
AC POWER ON
(Connect the power cable)
↑
AC POWER OFF
(Disconnect the power cable)
■
SCHEMATIC DIAGRAM (VIDEO TOP 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.
IC49 : SN74AHCT126PW
Quad 3-State Bus Buffers
1A
1Y
1C Vcc
4C
1
2
3
4 11 2C
4A
4Y
12
13
14
2A
2Y
3C
3A
5
6
7 GND 3Y 8
9
10
IC50–52 : SN74LV573APWR
Octal 3-State D-Latcheds
Output
Control
L
L
L
H
Latch
Enable
H
H
L
X
Data
H
L
X
X
Output
H
L
Q0
Z
OUTPUT
CONTROL
1D
3D
VCC
1Q
1
2
3
4 17
2D
2Q
3Q
18
19
20
4D
5D
4Q
5Q
5
6
7 6D 6Q
16
7D
8D
8
9
10 GND
7Q
8Q
CLOCK
13
15
14
12
11
Q D
>
OE
Q D
>
OE
Q D
>
OE
Q D
>
OE
Q D
>
OE
Q
D
>
OE
Q D
>
OE
Q D
>
OE
IC54 : TC74HC4051AFEL
Analog Multiplexers/Demultiplexers
LEVEL
CONVERTER
BINARY TO 1-OF-8
DECODER WITH INHIBIT
11
10
9
8
7
6 16
13 SW
SW
SW
SW
SW
SW
SW
SW
14
15
12
1
5
2
4
3
INHIBIT VDD
X
A
B
C
VSS
VEE
X0
X1
X2
X3
X4
X5
X6
X7
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
“ON” CHANNEL (S)
0
1
2
3
4
5
6
7
NONE
IC58 : SN74LV245APWR
IC59 : SN74AHCT245PWR
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
IC53 : SN74AHC2GU04HDCTR
Triple Inverters
1A
3Y
GND
VCC
1Y
1
2
3
4 5
2A 3A
2Y
6
7
8
IC55 : MX29F400BTC-70
4M-Bit CMOS Flash Memory
Control
Input Logic
Sense
Amplifier
Write State
Machine (WSM)
State
Register
Program/Erase
High Voltage
I/O Buffer
Address
Latch
and
Buffer
CE
OE
WE
Flash
Array
Y-Pass
Gate
X-Decoder
Y-Decoder
A0~A17
Q0~Q15/A-1
PGM
Data HV
Array
Source
HV
Command
Data Latch
Command
Data Decoder
Program
Data Latch