Yamaha DSP-A595 Service Manual page 39

A B C
SCHEMATIC DIAGRAM (INPUT)
1
Q Q
3 7
PHONO(MM)
EQ AMP
2
11.4
0 3
8
1
0
2 0
0
6
7
0
0
4
5
-11.3
3 1
AUDIO
SIGNAL
MAIN L
4
IN
3
(PLAY)
TAPE/MD
OUT
4
(REC)
5
T E
L 1 3 9 4
6
IN
OUT
OUTPUT
-11.6
7 SUB 0
WOOFER
0
MUTING
8
IC102 : LC78213
IC101 : LC78211
Analog Function Switch Analog Function Switch
9
w w w
.
PIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC's.
10 1SS133 HZS5C2TD 2SC2878(A, B) NJM2068MD M5220L
UPC4570HA LB1641
1SS176 HZS11B2TD
HSS104
Anode
8
9
E
Cathode
C
B
D E F
FRONT L
REAR L
TO DSP CB6
6 3 P52 N-4 1 5 1
MAIN L
MAIN L (DSP)
CENTER
CENTER/SUB WOOFER/FRONT/REAR AMP
CENTER
23.3
0 8
3
1
0 2
0.1
0 0
0.1
0.1 0.4
0.1 6
7
0.1 0.1
5
4
-23.0
FRONT L
INPUT SELECTOR
REAR L
MAIN
CONTROL
MAIN L
0
11.9
0
4 1,9
0 2
0 0
3
0
0 0 0 0
0 0 0 0
MAIN L(DSP)
0 0 0
0 0 0
0 0 0 0 0 0 0 0
0 7
8
0 0
0
0 5
6
-11.7
0
2 2 9 6 5 1 3
TO INPUT(2) CB301
P47 D-4
IC103 : LC78212 IC110,111 : TC9299P
Analog Function Switch Electric Controlled Volume
Vss V
DD
L1 1 30 R1 1 16
2
L2 2 29 R2 OUT
L-ch R-ch
L3 3 28 R3
IN 3 DATA DATA
LCOM1 4 27 RCOM1 L-ch LATCH LATCH
L4 5 26 R4 NC 4
L5 R5
6 25
A-GND 5
L6 R6
7 24
LCOM2 8 23 RCOM2 CS1 6
L7 9 22 R7 SHIFT REGISTER (13bit)
LEVEL LEVEL
GND 7
L8 R8 SHIFTER SHIFTER
10 21
STOROBE GENERATOR
LCOM3 11 20 RCOM3
CK 8
V 19 LEVEL SHIFTER
DD
Vss 16
14 D1
LATCH
V 12
EE
15
CL
RES 18 SHIFT RESISTER
CE
S 17 13
x a o
y
IC104 : NJM2068LD
i IC107~109 : M5220L
Dual OP-Amp
TC74HCU04AP HD74HC153P
LC78211
UPC4570C
TC9299P LC78212
LC78213 + +
– –
1 2 3 4 5 6 7 8
10
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G H
5 0
MAIN L
(DSP)
MAIN L
0
0
0
CENTER
0 0
0
0
23.3
0
6 8
7 0 0 0 0
0
0 5
0 0
SPEAKER LEVEL
0 CONTROL
0 5
0 0
7
0 6 0 0 0 0
8
23.3
0
0
0 0
0 0
0
DSP AMP
0 0
0 -23.0
0
0 4
0
3
0 0 1
2
0
FRONT
L
0 2
1
0 0
3 0
0 0 4
0 -23.0
0 0
6CH
SELECTOR
Q Q
3 7 6 3
TO OPE(1) CB800
TO DSP CB3
P51 A-5 P52 D-9
IC352 : HD74HC153P
IC351: TC74HCU04AP
Hex Inverters Dual 4 to Data Selectors
15 OUT 1A 1 14 V
DD
14 1Y 2 13 6A
IN
R-ch
13 NC
2A 3 12 6Y
12 A-GND
2Y 4 11 5A
11 CS2
3A 5 10 5Y
10 STB
3Y 6 9 4A
9 DATA
Vss 7 8 4Y
u 1 6 3
µ µ
IC106, 112, 113 : PC4570HA IC401~403 : PC4570C
Dual OP-Amp Dual OP-Amp .
A OUT V+
A –IN B OUT
A +IN B –IN
V– B +IN
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I J K
TO OPE(4) CB802
P51 H-4
8 9 2 4 9
MAIN L
CENTER
11.9
0
6 1,9
8
0
7
0
0 3
2
0
4 0
5
-11.7
REAR L
11.9
0
6 1,9
8
0 7
0
3
2
4
5
-11.7
1 5 1 5 0 8 9 2
EXTERNAL
DECODER
INPUT
SURROUND
2.5
COAXIAL
DIGITAL 0 4.8
OPTICAL
SIGNAL
OPTICAL
DIGITAL IN
IC404 : LB1641
Motor Driver
m
c o
L M N
DSP-A595
VOLUME AMP
8 2 9 9
MAIN L
11.7
8
0
3 1
0
0
2
0
6
7
0
0
4
5
CENTER
-11.6
11.7
3 8
0 1
0
0
2
0 6
7
0 0
4
5
-11.6
REAR L
11.7
3 8
0 1
0
0
2
0 6
7
0 0
5 4
-11.6
MOTOR DRIVE
4 9 8 2 9 9
DIGITAL SELECTOR
4.8
3.1
0
0.3
0
0
0 0 0
4.8
0 4.8
:NOT USED
Conditions
→ CD
• INPUT
→ minimum(–∞)
• VOLUME
• IMPEDANCE
→ Upper
SELECTOR
• PRO LOGIC → On
All voltages are measured with a 10M Ω /V DC electric
volt meter.
Components having special characteristics are marked
and must be replaced with parts having
specifications equal to those originally installed.
Schematic diagram is subject to change without notice.