Yamaha DSP-AX2, Service Manual

Page: 61 / 89

A B C D E F G H
1
2
3
4
5
6
I J K L M N
7
8
9
10
DSP-AX2
■
SCHEMATIC DIAGRAM (OPERATION)
* All voltage are measured with a 10M
Ω
/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 :
µ
PC4570HA
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
V
SS
7
14 V DD
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