Yamaha RX-V495 Service Manual page 49

A B C
SCHEMATIC DIAGRAM (INPUT)
1
PHONO(MM)
2 EQ AMP
11.4
0
3 8
1
0 2
0
0 6
7
0
0
5 4
-11.2
3
INPUT SELECTOR
AUDIO
SIGNAL MAIN L
4
IN
3
(PLAY)
0 0 0 0
OUT
4
(REC)
5 0 0 0 0
6
IN
OUT
7
-11.5
0
OUTPUT
SUB
0
WOOFER
MUTING
TO INPUT(2) CB301
P58
8
IC101 : LC78211 IC102 : LC78213
Analog Function Switch Analog Function Switch
9
10 PIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC's.
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
P63 N-4
MAIN L
MAIN L
(DSP)
CENTER
CENTER/SUB WOOFER/FRONT/REAR AMP
CENTER
24.0
0 8
3
1
0
2 0.1
0 0
0.1 0.2 0.1
6
0.1
7
0.1
0.1
5
4
-23.9
FRONT L
REAR L
MAIN
CONTROL
MAIN L
0
11.9
0
4
0 2
0
0 3
0
0 0 0 0
MAIN L(DSP)
0 0
0
0 0 0
0 0 0 0
0 7
8
0 0 0
0 6 5
0 -11.6
TUNER LEVEL
CONTROL
11.9
0
6
8
7 0
0
3
2 0
0 4
5 0
-11.6
E-2
IC110,111 : TC9299P
IC103 : LC78212
Electric Controlled Volume
Analog Function Switch
Vss V DD
1 16
L1 1 30 R1
OUT 2
L2 2 29 R2
L-ch R-ch
L3 R3
3 28
IN 3 DATA DATA
LCOM1 RCOM1
4 27 L-ch LATCH LATCH
L4 5 26 R4
NC 4
L5 6 25 R5
A-GND 5
L6 7 24 R6
LCOM2 8 23 RCOM2 CS1 6
L7 9 22 R7
SHIFT REGISTER (13bit)
LEVEL LEVEL
GND 7
SHIFTER SHIFTER
L8 10 21 R8
STOROBE GENERATOR
LCOM3 11 20 RCOM3 CK 8
V DD 19 LEVEL SHIFTER
Vss 16
14 D1
LATCH
V EE 12
15 CL
RES 18 SHIFT RESISTER
13 CE
S 17
IC104 : NJM2068LD
IC107~109 : M5220L
Dual OP-Amp
TC74HCU04AP
HD74HC153P LC78211
UPC4570C TC9299P
LC78212
LC78213 + +
– –
10 1 2 3 4 5 6 7 8
G H
MAIN L
(DSP)
MAIN L
0
0
0
CENTER
0 0
0
0
24.0
0
6 8
0
7 0 0 0
0 0
5
0
0
SPEAKER LEVEL
0 CONTROL
0 0 0 5
7
0 0 0 0
6 0
8
24.0
0
0
0 0
0 0
0
DSP AMP
0 0
0 -23.7
0
4
0
0 3
1
0 0
2
0.1
FRONT
L
0 2
1
0 0 3 0
0
0 4
-23.7
0
0 0
6CH
SELECTOR
TO OPE(1) CB800 TO DSP CB3
P62 A-5 P63 D-9
TO TUNER CB4 P64 H-5 :J,U,C,R,T,A,L models
TO TUNER CB4 P65 H-4 :B,G models
IC352 : HD74HC153P
IC351: TC74HCU04AP
Dual 4 to Data Selectors
Hex Inverters
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
IC105, 106, 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
I J K
TO OPE(4) CB802
P62
H-4
MAIN L
CENTER
11.9
0 6
8
0 7
0
0 3
2
0 4 0
5
-11.6
REAR L
11.9
0
6
8
0
7 0
0
3
2
0
4 0
5
-11.6
EXTERNAL
DECODER
INPUT
SURROUND
DIGITAL SELECTOR
4.8
3.1
2.5
0.4
COAXIAL
0
4.8
0
DIGITAL 0 4.8 0 4.8
OPTICAL
SIGNAL
~
4.8
0
OPTICAL
4.3
DIGITAL IN
IC404 : LB1641
Motor Driver
L M N
DSP-R495/RX-V495/RX-V495RDS/HTR-5140/HTR-5140RDS
VOLUME AMP
MAIN L
11.8
8
0
3 1
0
0
2
0 6
7
0 0
4
5
CENTER
-11.5
11.8
3
8
0 1
0
0
2
0
6
7
0 0
5 4
-11.5
REAR L
11.8
3
8
0 1
0
0
2
0
6
7
0 0
5 4
-11.5
MOTOR DRIVE
VOLUME
0
0
0
0 0
4.8
:NOT USED
Conditions (RX-V495RDS)
→ 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.
60