Yamaha DSP-AX2 Service Manual page 61

A B C
SCHEMATIC DIAGRAM (OPERATION)
1
BASS EXTENSION
8.5
8.5
2
0
8.4 -8.4
-8.4 0
0
-8.4
0
P-E73/J71
I-1
0
-8.4
0
-8.4
3
4
5
FL DRIVER
6
-23.8
-12.3
P-E76/J74
7 F-4 -23.8
AC 6.9V
8
4.9
4.8
9
0
10
D E F
TONE CONTROL
HP MUTE
10.9
10.9
0
0
0
0
0
0
0
0
0
0.7
0
0
0.7
0
0
0
-8.5 0 0
0 0
0
-10.9
-10.9
4.9
-29.1
-29.2
G H
PHONES AMP
9.1 8.4
8.4
0
0
0
0
0
0
-8.4
-9.1 -8.4
P-E73/J71
L-6
-23.8
-23.8
FL DRIVER
I J K
5.0
4.0 4.0
4.0
0 0
5.0
P-E73/J71
L-8
SW901 – 903, 972, 977 EVQ11A
990 – 994 SKQNAB
L M N
DSP-AX2
IC802 : NJM2068L-D
IC804 : NJM4556AL
Dual OP-Amp
+ +
– –
1 2 3 4 5 6 7 8
P-E72/J70
µ
G-1 IC803 : PC4570HA
Dual OP-Amp
1 2
– + + –
P-E73/J71
1 2 3 4 5 6 7 8 9
D-1
V V –Vm +Vm V +Vm –Vm V V
CC O1 1 1 EE 2 2 O2 CC
IC801 : TC4066BP
Quad Analog Switch/Multiplexer
IN/OUT 1 14 V DD
SW
SIG/A 13 CONT A
A
P-E73/J71
OUT/IN 2
L-5
SW
OUT/IN 3 12 CONT D
D
SIG/B
IN/OUT 4 11 IN/OUT
SIG/D
SW
CONT B 5 10 OUT/IN
B
9 OUT/IN
SW
CONT C SIG/C
6
C
V SS 7 8 IN/OUT
IC901, 902 : M66004MBFP-200C
FL Display Driver
DISPLAY CODE
CS SERIAL
14
RECEIVE REGISTER CGROM
SCK 15 59 SEG00
(8BITx16) (35BITx160)
SDATA 16 CIRCUIT
CODE SEGMENT 33 SEG26
WRITE OUTPUT
SEG27
31
CIRCUIT
CGRAM
23 SEG35
(35BITx16)
CORD/
COMMAND
RAM
CONTROL WRITE
CIRCUIT
OUTPUT 18 P0
PORT
(2BIT) P1
17
DISPLAY
CONTROL
RESET 13
REGISTER CODE
SELECT
12 DIG00
XIN 21 DIGITAL
CLOCK DISPLAY 1 DIG11
OUTPUT
GENERATOR CONTROLLER
XOUT 20 64 DIG12
CIRCUIT
61 DIG15
Conditions
• INPUT: DVD auto
• PROGRAM: PRO LOGIC DSP
* 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