Yamaha DSP-AX2 Service Manual

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DSP-AX2
■ SCHEMATIC DIAGRAM (OPERATION)
* All voltage are measured with a 10MΩ/V DC electric 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.
E-74/J-72
V O1
2
–Vm
1
3
+Vm
1
4
V
EE
5
+Vm
2
6
–Vm
2
7
V
O2
8
V
CC
9
V CC
1
1
– +
– +
2
IC803 : µPC4570HA
Dual OP-Amp
IC802 : NJM2068L-D
IC804 : NJM4556AL
Dual OP-Amp
–IN
1
2
+IN
1
3
–V
CC
4
+IN
2
5
–IN
2
6
OUT
2
7
+V
CC
8
OUT
1
1
–
+
–
+
IC901, 902 : M66004MBFP-200C
FL Display Driver
P1
18
17
DISPLAY
CONTROL
REGISTER
OUTPUT
PORT
(2BIT)
SERIAL
RECEIVE
CIRCUIT
DIGITAL
OUTPUT
CIRCUIT
DISPLAY
CONTROLLER
CLOCK
GENERATOR
P0
XOUT
20
XIN
21
CS
14
SCK
15
SDATA
16
RESET
13
DIG00
12
61
DIG15
DIG12
64
1
DIG11
SEG00
59
23
SEG35
SEG27
31
33
SEG26
SEGMENT
OUTPUT
CIRCUIT
DISPLAY CODE
REGISTER
(8BITx16)
CGROM
(35BITx160)
DECODER
CGRAM
(35BITx16)
DECODER
CODE
SELECT
CODE
WRITE
RAM
WRITE
CORD/
COMMAND
CONTROL
CIRCUIT
IC801 : TC4066BP
Quad Analog Switch/Multiplexer
SW
A
IN/OUT
1
OUT/IN
2
OUT/IN
3
IN/OUT
4
CONT B
5
CONT C
6
VSS
7
14
VDD
13
CONT A
12
CONT D
11
IN/OUT
10
OUT/IN
9
OUT/IN
8
IN/OUT
SW
D
SW
B
SW
C
SIG/A
SIG/B
SIG/D
SIG/C
TONE CONTROL
BASS EXTENSION
PHONES AMP
HP MUTE
FL DRIVER
FL DRIVER
0
0
8.4
-8.4
8.5
0
0
8.5
-8.5
0
-8.4
0
0
-8.4
0
-8.5
0
-8.4
0
0
-8.4
0
8.5
0
0
0
10.9
0
0
0
-10.9
0
0
0
-10.9
0
0
0
10.9
0
0
0
0.7
0.7
0
0
0
9.1
8.4
8.4
0
0
0
-8.4
-9.1
-8.4
4.0
4.0
5.0
0
4.0
0
5.0
4.9
-26.1
~
4.9
~
~
4.9
~
-30.6
-30.6
4.9
~
4.9
4.9
4.9
4.9
4.9
4.9
-21.0
-29.1
-18.6
-29.1
-30.6 -20.0
~
-29.2
-29.2
~
-29.2
~
4.9
-29.1
-29.2
24.2
-30.9
-30.9
-29.2
~
~ ~ ~
-26.2
0
-26.2
0 2.3
4.9
4.8 4.8 4.8 4.8
-29.2
~
-29.2 -29.2 -29.2 -29.3 -29.2 -29.2 -29.2
-29.2 -29.2 -29.2
-29.2
~
-18.8
-26.2 -30.7 -27.6 -30.7
-201
-26.2 -24.6 -24.7 -27.6 -20.0
-25.7 -30.7 -29.2 -30.7
~ ~
-29.1 -30.6 -20.0 -30.6
~ ~
-21.0 -26.1
4.9
-29.2 -29.3 -27.2 -29.2
-23.8
-23.8
-26.2 ~ ~ ~
-12.5 -12.5
0 -26.2 ~ -29.2 -29.2 ~ -18.8 -26.2 -30.7 -27.6 -30.7 -20.1 -26.2 -24.6 -24.7 -27.6 -20.0 -25.7 -30.7 -29.2 -30.7 ~ ~ -29.2 -29.2 ~ ~ -30.6 ~ ~ ~ ~ -29.3 -27.2 -29.2 -29.2 -29.2 -29.2 -29.2 -29.2
-29.2 -29.3
-29.2 -29.2 -29.2 ~ -29.2
-23.8
-23.8
-29.2 -29.1 -29.1 -29.2
0
-29.2 -29.2 -29.2 -29.2
-29.2 -29.2 -29.1 -29.2 -29.2 -29.2 -29.2
-29.1 -29.1 -29.1 -29.1 -30.7 -29.1 -30.7 -29.1 -30.7
~
-26.2
~
-24.6
~ ~ ~
-29.1 -26.1 -29.2
~
-24.5 -29.1 -26.0 -27.7 -24.5
~
-30.7
-29.1 -29.1 -29.1 -29.1 -30.7 -29.1 -30.7 -29.1 -30.7 ~ -26.2 ~ -24.6 ~ ~ ~ -29.1 -26.1 -29.2 ~ -24.5 -29.1 -26.0 -27.7 -24.5 ~ -30.7
-29.1
-24.5 -24.5
-26.0 -26.0 -26.0 -26.0 -26.0
-29.1 -29.2 -29.2 -29.1 4.9
-29.1 -29.2 -29.2 -29.2 -29.2
29.2 29.2
0
-29.2 -29.1 -29.1 -29.2
4.8 4.8 4.8 4.8 4.9 2.3 2.3
0
-26.1 -26.0 -26.0 -26.0 -26.0 -24.5 -24.5 -29.1 -30.9
4.9
4.8
0
-12.3
AC 6.9V
SW901 – 903, 972, 977
990 – 994
EVQ11A
SKQNAB
P-E73/J71
I-1
P-E76/J74
F-4
P-E73/J71
L-6
P-E73/J71
L-8
P-E72/J70
G-1
P-E73/J71
D-1
P-E73/J71
L-5
Conditions
• INPUT: DVD auto
• PROGRAM: PRO LOGIC DSP

Yamaha DSP-AX2 Specifications

General

Brand	Yamaha
Model	DSP-AX2
Category	Amplifier
Language	English