Yamaha DSP-A595a Service Manual page 41

A B C
SCHEMATIC DIAGRAM (INPUT)
1
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
INPUT SELECTOR
SIGNAL
MAIN L
2
4
IN
3
(PLAY)
0 0 0 0
TAPE/MD
0
OUT
4
(REC)
5
0 0 0 0
6
IN
7 OUT
OUTPUT
-11.6
0
SUB
WOOFER
0
MUTING
8
TO VIDEO CB301
page E-49/J-47 D-4
IC102 : LC78213
IC101 : LC78211
Analog Function Switch Analog Function Switch
9
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
page E-53/J-51 N-4
MAIN L
MAIN L (DSP)
CENTER
CENTER/SUB WOOFER/FRONT/REAR AMP
CENTER
23.3
0 8
3
1
0 2
0.1
0
0.1
0.1
0.1 6
7
0.1 0.1
5 4
-23.0
FRONT L
REAR L
MAIN
CONTROL
MAIN L
0
11.9
0
4 1,9
0 2
0
0 3
0
0 0 0 0
MAIN L(DSP)
0 0
0 0 0
0 0 0 0
0 7
8
0 0
0
0 6 5
0 -11.7
IC103 : LC78212
Analog Function Switch
IC110,111 : TC9299P
Electric Controlled Volume
L1 1 30 R1
L2 2 29 R2 Vss V DD
1 16
L3 3 28 R3
OUT 2
LCOM1 4 27 RCOM1
L-ch R-ch
L4 5 26 R4
IN 3 DATA DATA
L5 R5 L-ch LATCH LATCH
6 25
NC 4
L6 R6
7 24
LCOM2 8 23 RCOM2
A-GND 5
L7 9 22 R7
L8 R8 CS1 6
10 21
LCOM3 11 20 RCOM3 SHIFT REGISTER (13bit)
LEVEL LEVEL
GND 7
V 19 LEVEL SHIFTER SHIFTER SHIFTER
DD
Vss 16
14 D1 STROBE GENERATOR
LATCH CK 8
V 12
EE
15
CL
RES 18 SHIFT RESISTER
CE
S 17 13
IC104 : NJM2068LD
IC107~109 : M5220L
Dual OP-Amp
TC74HCU04AP HD74HC153P
LC78211
UPC4570C
TC9299P LC78212
LC78213 + +
– –
1 2 3 4 5 6 7 8
10
G H
MAIN L
(DSP)
0
0
0
CENTER
0
0.1
0 0
0
0
23.3
0
6 8
7 0 0 0 0
0
0
5
0
0
0
0
0 0 5
7
0 0 0 0
6 0
8
23.3
0
0
0 0
0 0
0
DSP AMP
0 0
0 -23.0
0
4
0
0 3
1
0 0
2
0
FRONT
L
0 2
1
0 0 3
0
0 0 4
0 -23.0
0 0
6CH
SELECTOR
TO OPE(1) CB800
TO DSP CB3
page E-52/J-50 A-5 page E-53/J-51 D-10
IC351: TC74HCU04AP IC352 : HD74HC153P
Hex Inverters Dual 4 to Data Selectors
15 OUT 1A 1 14 V
DD
14 IN 1Y 2 13 6A
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
µ µ IC404 : LB1641
IC106, 112, 113 : PC4570HA IC401~403 : PC4570C
Motor Driver
Dual OP-Amp Dual OP-Amp
A OUT V+
A –IN B OUT
A +IN B –IN
V– B +IN
I J K
TO OPE(4) CB802
page E-52/J-50 H-4
MAIN L
MAIN L
CENTER
SPEAKER LEVEL
CONTROL
11.9
0
6 1,9
8
0 7
0
0 3
2
0 4 0
5
-11.7
REAR L
11.9
6 1,9
8
7
0
3
2
0 4
0
5
-11.7
COAXIAL
DIGITAL
OPTICAL
SIGNAL
OPTICAL
Conditions
• INPUT
• VOLUME
• IMPEDANCE
SELECTOR
• PRO LOGIC → On
L M N
DSP-A595a
VOLUME AMP
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
1
0
0
0
2
0
6
7
0 0
5 4
-11.6
REAR L
11.7
3 8
0 1
0
0
2
0 6
7
0
0
4
5
-11.6
MOTOR DRIVE
EXTERNAL
DECODER
INPUT
SURROUND
DIGITAL SELECTOR
4.8
3.0
2.5
0
0.3
0
0
0 0 0
4.8
0
4.8 0 4.8
DIGITAL IN
:NOT USED
All voltages are measured with a 10M Ω /V DC electric volt meter.
→ CD
→ minimum(–∞) Components having special characteristics are marked and
must be replaced with parts having specifications equal to those
→ Upper
originally installed.
Schematic diagram is subject to change without notice.
E-50/J-48